MitoPedia: O2k-Respirometry

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O2k-Open Support

MitoPedia: O2k-Respirometry



Template NextGen-O2k.jpg


MitoPedia O2k and high-resolution respirometry: O2k-Open Support 



MitoPedia: O2k-Respirometry is a component of Oroboros Open Support.
It lists basic HRR-related topics.
See also
ยป MitoPedia: O2k-FluoRespirometry


TermAbbreviationDescription
Cell count and normalization in HRRNceThe cell count Nce is the number of cells, expressed in the abstract unit [x] (1 Mx = 106 x). The elementary entity cell Uce [x] is the real unit, the 'single individual cell'. A cell count is the multitude or number N of cells, Nce = NยทUce (Gnaiger MitoFit Preprints 2020.4). Normalization of respiratory rate by cell count yields oxygen flow IO2 expressed in units [amolยทs-1ยทx-1] (=10-18 molยทs-1ยทx-1).
Coenzyme Q2CoQ2
CoQ2
Coenzyme Q2 or ubiquinone-2 (CoQ2) is a quinone derivate composed of a benzoquinone ring with an isoprenoid side chain consisting of two isoprenoid groups, with two methoxy groups, and with one methyl group. In HRR it is used as a Q-mimetic to detect the redox changes of coenzyme Q at the Q-junction in conjunction with the Q-Module, since the naturally occurring long-chain coenzyme Q (e.g. CoQ10) is trapped within membrane boundaries. CoQ2 can react both with mitochondrial complexes (e.g. CI, CII and CIII) at their quinone-binding sites and with the detecting electrode.
Comparison of respirometric methodsThe comparison of respirometric methods provides the basis to evaluate different instrumental platforms and different mitochondrial preparations, as a guide to select the best approach and to critically evaluate published results. The most frequently cited platforms are the Oroboros and the Seahorse.
Cover-Slip\black
Cover-Slip black.JPG
A Cover-Slip should be placed on top of the Oroboros Stopper to minimize contamination and evaporation of liquid extruding from the capillary of the stopper. The Cover-Slips do not exert any direct effect on oxygen backdiffusion into the Oroboros chamber. Use the the Cover-Slip\black to avoid light penetration and disturbance of fluorescence signals and generally for optical measurements in the Oroboros.
DatLabDatLab is the O2k-Software for Data Acquisition & Analysis, specifically developed for high-resolution respirometry with the O2k. The newest DatLab version is DatLab 8, included in the O2k-Packages. NextGen-O2k and O2k-Series J* and higher come with DatLab 8 installed on the integrated PC (Linux). DatLab 8 is required for the NextGen-O2k. DatLab 8.2 is compatible with O2k-Series (E and higher).
DuroquinolDQET-pathway level 2 is supported by duroquinol DQ feeding electrons into Complex III (CIII) with further electron transfer to CIV and oxygen. Upstream pathways are inhibited by rotenone and malonic acid in the absence of other substrates linked to ET-pathways with entry into the Q-junction.
Electrolyte\Reference-Electrode
Electrolyte Reference-Electrode.jpg
Electrolyte\Reference-Electrode for Reference-Electrode\2.4 mm
Filter Set AmR
Filter Set AmR.JPG
Filter Set AmR: Set of filters for the determination of H2O2 production with Amplex UltraRed. These filters should be used together with Fluorescence-Sensor Green. The filter set consists of 6 LED filters (round) and 6 photodiode filters (rectangular).
Filter Set MgG / CaG
Filter Set MgG CaG.JPG
Filter set MgG / CaG: Set of filters for the determination of concentraions of Mg2+ or Ca2+ with the fluorophores Magnesium green and Calcium green, respectively. These filters should be used together with Fluorescence-Sensor Blue or Smart Fluo-Sensor Blue. The filter set consists of 6 LED filters (round) and 6 photodiode filters (rectangular).
Filter Set Saf
Filter Set Saf.JPG
Filter set Saf: Set of filters for the (qualitative) determination of mitochondrial membrane potential with Safranin. These filters should be used together with Fluorescence-Sensor Blue or Smart Fluo-Sensor Blue. The filter set consists of 6 LED filters (round) and 6 photodiode filters (rectangular).
Filter-Cap
Filter-Cap.JPG
Filter-Cap: O2k-Fluo LED2-Module (O2k-Series D to G) sensors (Fluorescence-Sensor Green and Fluorescence-Sensor Blue) and O2k-FluoRespirometer (O2k-Series H to I) sensors (Smart Fluo-Sensor Green and Smart Fluo-Sensor Blue) are equipped with a removable Filter-Cap for exchange of optical filters for the optical pathways from the LED to the sample and from the sample to the photodiode.
Fluorescence-Control Unit
Fluorescence-Control Unit lettered.jpg
Fluorescence-Control Unit with O2k-Front Fixation, Current-Control (O2k-Chamber A and B) for regulation of light intensity of the LED in the fluorescence sensors. This item is a standard component of the O2k-Fluorescence LED2-Module.
Fluorescence-Sensor Blue
Fluorescence-Sensor Blue.JPG
Fluorescence-Sensor Blue: excitation LED 465 nm (dominant wavelength), photodiode, Filter-Cap equipped with Filter Set Saf for measurement of mitochondrial membrane potential with Safranin when delivered. The filter set Filter Set MgG / CaG for Magnesium greenยฎ / Calcium greenยฎ measurements is included.
Fluorescence-Sensor Green
Fluorescence-Sensor Green.JPG
Fluorescence-Sensor Green: excitation LED 525 nm (dominant wavelength), photodiode, Filter-Cap equipped with Filter Set AmR for Amplex UltraRed measurements when delivered.
Forceps for membrane application
Forcep for membrane application.jpg
Forceps for membrane application: for OroboPOS and ISE membrane application; do not use for tissue preparation.
Forceps\stainless Steel\angular Tip\fine
Forcep for tissue preparation angular tip.jpg
Forceps\stainless Steel\angular Tip\fine: for tissue preparation, stainless steel. Two pairs are used particularly for muscle fiber separation.
Forceps\stainless Steel\rounded Tip\sharp
Forcep for tissue preparation rounded tip.jpg
Forceps\stainless Steel\rounded Tip\sharp: for tissue preparation, stainless steel, antimagnetic. One pair is recommended for placing the tissue sample onto the microbalance and for handling in combination with Forceps\stainless Steel\straight Tip\sharp.
Forceps\stainless Steel\straight Tip\sharp
Forcep for tissue preparation straight tip.jpg
Forceps\stainless Steel\straight Tip\sharp: for tissue preparation, stainless steel, antimagnetic. One pair is recommended for insertion of the sample into the Oroboros chamber and for handling in combination with Forceps\stainless Steel\rounded Tip\sharp.
High signal at zero oxygenA high signal at zero oxygen may be observed during zero calibration (R0). First, check the quality of the dithionite solution. The following instructions show how to distinguish between a defective sensor head and an electrical leak current.
High-resolution respirometryHRR
Oroboros FluoRespirometer
High-resolution respirometry, HRR, is the state-of-the-art approach in mitochondria and cell research to measure respiration in various types of mitochondrial preparations and living cells with the Oroboros Bioenergetics Analyzer combined with MultiSensor modules.

Mitochondrial function and dysfunction have gained increasing interest, reflecting growing awareness of the fact that mitochondria play a pivotal role in human health and disease. HRR combines instrumental accuracy and reliability with the versatility of applicable protocols, allowing practically unlimited addition and combination of substrates, inhibitors, and uncouplers using the Oroboros. Substrate-uncoupler-inhibitor titration (SUIT) protocols allow the interrogation of numerous mitochondrial pathway and coupling states in a single respirometric assay. Mitochondrial respiratory pathways may be analyzed in detail to evaluate even minor alterations in respiratory coupling and pathway control patterns.

The Oroboros provides sole source instruments, with no other available instrument meeting its specifications for high-resolution respirometry. Technologically, HRR is based on the Oroboros Bioenergetics Analyzer, combining optimized chamber design, application of oxygen-tight materials, electrochemical sensors, Peltier-temperature control, and specially developed software features (DatLab) to obtain the unique sensitive and quantitative resolution of oxygen concentration and oxygen flux, with both, a closed-chamber or open-chamber mode of operation (TIP2k). Standardized calibration of the polarographic oxygen sensor (static sensor calibration), calibration of the sensor response time (dynamic sensor calibration), and evaluation of instrumental background oxygen flux (systemic flux compensation) provide the experimental basis for high accuracy of quantitative results and quality control in HRR. HRR can be extended for MultiSensor analysis by using the O2k-Fluo Smart-Module. Smart Fluo-Sensors are integrated into the Oroboros to measure simultaneously fluorometric signals using specific fluorophores. Potentiometric modules are available with ion-selective electrodes (pH, TPP+). The PB-Module extends HRR to PhotoBiology with accurate control of the light intensity and measurement of photosynthesis. The O2k and the NextGen-O2k support all these Oroboros Modules. The NextGen-O2k all-in-one, however, is unique in supporting Q-Redox and NADH-Redox Modules.
ISE Package 1 TPP or Ca
ISE Package 1 TPP or Ca.JPG
O2k-TPP+ and Ca2+ ISE\1 Chamber: ISE-Package for 1 TPP+ and Ca2+ electrode.
ISE-Ca2+ Membranes
Ca2+ membranes.jpg
ISE-Ca2+ Membranes: PVC, 4 mm diameter, box of 5 membranes. To be used with the O2k-TPP+ ISE-Module.
ISE-Compressible Tube
ISE-Compressible Tube.JPG
ISE-Compressible Tube for Ion-Selective Electrode TPP+ and Ca2+.
ISE-Filling Syringe
ISE-Filling Syringe.JPG
ISE-Filling Syringe with needle for Ion-Selective Electrode TPP+ and Ca2+.
ISE-Inner Glass Electrode
ISE-Inner Glass Electrode.JPG
ISE-Inner Glass Electrode of ISE, with Ag/AgCl- and Pt-wire
ISE-Membrane Mounting Tool
ISA-Membrane Mounting Tool.JPG
ISE-Membrane Mounting Tool for Ion-Selective Electrode TPP+ and Ca2+. O2k-TPP+ ISE-Module: mounting tool included.
ISE-Membrane Seal
ISE-Membrane Seal.JPG
ISE-Membrane Seal for Ion-Selective Electrode TPP+ and Ca2+.
ISE-TPP+ Membranes
ISE-TPP+ Membranes.JPG
ISE-TPP+ Membranes, PVC, 4 mm diameter, box of 5 membranes.
ISS-Filter and Tubing
ISS-Filter and Tubing.JPG
ISS-Filter and Tubing, ISS-Integrated Suction System.
ISS-Integrated Suction System
ISS.jpg
ISS-Integrated Suction System: Suction pump with stainless steel housing, 2 liter waste bottle, filter and tubing; for siphoning off excess medium from the Oroboros Stopper and for emptying the Oroboros chambers. The ISS is included as a standard component of the Oroboros. Media containing living cells or microorganisms, various poisons (inhibitors, uncouplers) and mixtures of proteins and substrates are safely disposed off in the 2-litre waste bottle.
ISS-Lid
ISS-Lid.JPG
ISS-Lid, for ISS-Waste Bottle, component of the ISS-Integrated Suction System.
ISS-Waste Bottle
ISS-Waste Bottle.JPG
ISS-Waste Bottle, 2-liter, component of the ISS-Integrated Suction System.
Ion-Selective Electrode TPP+ and Ca2+
Ion-Selective Electrode TPP+ and Ca2+.JPG
Ion-Selective Electrode TPP+ and Ca2+: ISE with 6 mm outer diameter shaft, for Stopper\white PVDF\angular Shaft\side+6.2+2.6 mm Port. O2k-TPP+ ISE-Module: 2 ISE.
MiR05-Kit
MiR05-Kit.jpg
Mitochondrial Respiration Medium - MiR05-Kit, 1 vial; for a final volume of 250 mL
Microbalance 120 g
Microbalance 120 g.jpg
Microbalance max 120 g; 0.01 mg display; particularly for wet weight determination of permeabilized fibres.
Microbalance-Transport Case
Microbalance-Transport Case.jpg
Microbalance transport case, not suitable for shipping
Microsyringe\10 mm3 51/0.13 mm
Hamilton Syringes for Manual Titration.jpg
Hamilton Microsyringe\10 mm3 51/0.13 mm for manual titrations, 10 mm3 volume; fixed injection needle with rounded tip: 51 mm length, 0.13 mm inner diameter.
Microsyringe\100 mm3 51/0.41 mm
Microsyringe 100 mm3 51 0.41 mm - Kopie.JPG
Hamilton Microsyringe\100 mm3 51/0.41 mm for manual titrations, 100 mm3 volume; fixed needle with rounded tip: 51 mm length, 0.41 mm inner diameter. It is recommended for injections of suspensions of isolated mitochondria.
Microsyringe\200 mm3\TIP2k
Microsyringe200 mm3TIP2k.JPG
Microsyringe\200 mm3\TIP2k: Microinjection syringe for Titration-Injection microPump, 200 mm3 (ยตl), fixed injection needle with rounded tip, with spacers.
Microsyringe\25 mm3 51/0.15 mm
Microsyringe 25 mm3 51 0.15 mm.JPG
Hamilton Microsyringe\25 mm3 51/0.15 mm for manual titrations, 25 mm3 volume; fixed needle with rounded tip: 51 mm length, 0.15 mm inner diameter.
Microsyringe\50 mm3 51/0.15 mm
Microsyringe 100 mm3 51 0.41 mm - Kopie.JPG
Hamilton Microsyringe\50 mm3 51/0.15 mm for manual titrations, 50 mm3 volume; fixed needle with rounded tip: 51 mm length, 0.15 mm inner diameter.
Microsyringe\500 mm3\TIP2k
Microsyringe 500 mm3 TIP2k.JPG
Microsyringe\500 mm3\TIP2k: Microinjection syringe for Titration-Injection microPump, 500 mm3 (ยตl), fixed injection needle with rounded tip, with spacers.
MitoKit-CII
MITOKIT-CII.jpg
Cell permeable prodrugs, composed of MitoKit-CII/Succinate-nv and MitoKit-CII/Malonate-nv, stimulates (Snv) or inhibits (Mnanv) mitochondrial respiration in CI-deficient human blood cells, fibroblasts and heart fibres, acting on Complex II of the electron transfer system.
Motic Microscope
Motic Microscope.jpg
Motic Microscope SMZ-171 TLED: for preparation of permeabilized fibres; compact and light stereo microscope, Greenough optical system, switching power supply for use worldwide (100-240V); including auxiliary ESD objective 2.0X(38.6mm).
O-ring sV\Viton\9.5x1 mm
34310-02.jpg
O-ring sV\Viton\9.5x1 mm, for PEEK Stopper sV, 2 are mounted on each PEEK Stopper sV, box of 8 as spares.
O-ring\Viton\12.5x1 mm
O-ringViton12.5x1 mm.jpg
O-ring\Viton\12.5x1 mm, for PVDF or PEEK O2k-Stoppers (2-mL O2k-Chamber), box of 8 as spares.
O-ring\Viton\16x2 mmO-ring\Viton\16x2 mm, mounted on the O2k-Chamber Holder sV.
O-ring\Viton\18x2 mm
Viton O-ring 18x2.jpg
O-ring\Viton\18x2 mm, mounted on the O2k-Chamber Holder.
O-ring\Viton\6x1 mm
POS O-ring for sensor head or POS mounting tool.jpg
O-ring\Viton\6x1 mm for POS-Mounting Tool.
O-ring\Viton\8x1 mm
POS O-ring for sensor head or POS mounting tool.jpg
O-ring\Viton\8x1 mm: for OroboPOS sensor head. Replaces the O-ring\Viton\9x1 mm
O2-Zero Powder
O2-Zero Powder.jpg
O2-Zero Powder, dithionite (Na2S2O4), for zero-oxygen calibration of the OroboPOS.
O2k-Dissection Set
O2k-Dissection-Set.jpg
O2k-Dissection Set: for tissue preparation, set of 4 pairs of stainless steel, antimagnetic forceps and a pair of scissors.
O2k-Main Power CableO2k-Main Power Cable, for connecting the main unit to the power supply.
O2k-Main Power Cable\120 V\US-CA
O2k-Main Power Cable 120 V US-CA.JPG
O2k-Main Power Cable\120 V\US-CA, USA and Canada (120 V).
O2k-Main Power Cable\230 V\AU-NZ
O2k-Main Power Cable 230 V AU-NZ.JPG
O2k-Main Power Cable\AU-NZ, Australia and New Zealand (230 V).
O2k-Main Power Cable\230 V\Europe
O2k-Main Power Cable 230 V Europe.JPG
O2k-Main Power Cable\230 V\Europe.
O2k-Specifications
O2k-Info.png
O2k versus multiwell respirometer: O2k stands for Oroboros O2k and high-resolution respirometry, meeting powerful quality criteria securing high output and pioneering state-of-the-art comprehensive OXPHOS analysis of substrate control and coupling control of mitochondrial function. 'High throughput' stands for disposable multiwell systems - expensive, with limited scope and extremely high running costs. In respirometry, high throughput is not equivalent to high output. If youโ€™re using a biased instrument, it doesnโ€™t matter how many measurements you take โ€“ youโ€™re aiming at the wrong target (Silver 2012 Penguin Press).
O2k-Titration Set
O2k-Titration Set.JPG
The O2k-Titration Set consists of Hamilton microsyringes (6 x 10 mm3 and 3 spare plungers, 6 x 25 mm3, 1 x 50 mm3, 1 x 100 mm3, 1 x 500 mm3; fixed needles with rounded tips), provided in the Syringe Storage Box with Syringe Labels, a set of two Syringe Racks with Syringe Collars, and a set of two Tube Racks.
O2k-USB Flash Drive
Oroboros-USB-flash-drive.JPG
The O2k-USB Flash Drive is a component of the Oroboros O2k containing: DatLab, O2k-Manual, O2k-Protocols, O2k-Publications, and info on O2k-Workshops.
O2k-sV-ModuleO2k-sV-Module
11200-01.jpg
The Oroboros sV-Module is the Oroboros small-volume module, comprised of two Duranยฎ glass chambers of 12 mm inner diameter specifically developed to perform high-resolution respirometry with reduced amounts of biological sample, and all the components necessary for a smaller operation volume V of 0.5 mL. The current DatLab version is included in the delivery of this revolutionary module.
OroboPOS
OroboPOS.JPG

The OroboPOS is a polarographic oxygen sensor (POS), with an amperometric mode of operation. The OroboPOS meets the highest quality criteria in terms of linearity, stability and sensitivity of the signal. The Clark type polarographic oxygen sensor (POS) remains the gold standard for measuring dissolved oxygen in biomedical, environmental and industrial applications over a wide dynamic oxygen range.

It consists of a gold cathode, a silver/silverchloride anode and a KCl electrolyte reservoir separated from the sample by a 25 ยตm membrane (FEP). The main body of the OroboPOS is made of PEEK. With application of a polarization voltage (0.8 V), a current is obtained as an amperometric signal, which is converted to a voltage.
OroboPOS-Connector
POS connector and cable connection.jpg
OroboPOS-Connector (blue POM), with male connection to OroboPOS head (POS) and with cable and male plug fitting into Oroboros Main Unit.
OroboPOS-Connector ServiceThe OroboPOS-Connector Service entails routine maintenance and any necessary repairs of the OroboPOS-Connector in the Oroboros electronics workshop (WGT).
Oroboros
NextGen-O2k all-in-one

The Oroboros is the Bioenergetics platform for high-resolution respirometry (HRR) for mitochondria and cell research. The two models of the Oroboros include the Oroboros O2k and the Oroboros NextGen-O2k for precision OXPHOS analysis.

The modular Oroboros concept is supported by DatLab, with high flexibility for add-on Oroboros Modules. All Oroboros Modules are supported by the NextGen-O2k, which is the only model supporting the NextGen-O2k Redox modules (Oroboros Q-Module and NADH-Module), and the NO-Module.

Both Oroboros models (O2k Series-J; NextGen-O2k) provide the basis for all other HRR applications, combined with measurement of ROS production, mitochondrial membrane potential, ATP production, Ca2+, pH, and PhotoBiology.

The Oroboros allows bioenergetic analysis at controlled oxygen levels. Small amounts of biological samples can be used for bioenergetic and OXPHOS analysis, ranging from isolated mitochondria, permeabilized tissues and permeabilized cells, to living cells and tissues slices.

The globally tested and trusted high-resolution Oroboros prioritizes both quality and scientific research output in the field of mitochondrial physiology and pathology, extended to PhotoBiology. The Oroboros is a robust sole-source instrument with a long life time and low running costs. Expert service is provided by the Oroboros Open Support.
Oroboros Accessory BoxThe Oroboros Accessory Box contains components of the POS-Service Kit and the Oroboros Assembly Kit and is shipped with the Oroboros.
Oroboros Assembly KitThe Oroboros Assembly Kit is a component of the Oroboros O2k, consisting of 2 PVDF Stirrer-Bars, 2 PEEK Oroboros Stoppers, OroboPOS-Connectors for O2k-Series A-I and NextGen-O2k series XA (attached to the Oroboros Main Unit) and cables (power supply, USB-connection). Several components of the Oroboros Assembly Kit are included in the Oroboros Accessory Box either for shipment or for storage.
Oroboros Barometric Pressure TransducerOroboros Barometric Pressure Transducer, A/D converter and digital output to DatLab for continuous recording of barometric pressure [kPa or mmHg], integrated into the air calibration of the POS (MiPNet06.03 POS-calibration-SOP). Integral component of the Oroboros Main Unit. The warranty on the accuracy of the signal obtained from the Oroboros Barometric Pressure Transducer expires within three years.
Oroboros Chamber sV
33100-01.jpg
O2k-Chamber sV: 12 mm inner diameter, Duranยฎ glass polished, with standard operation volume V of 0.5 mL.
Oroboros Chamber-Holder cV
Chamber holder PVDF Stopper.jpg
Oroboros Chamber-Holder cV (blue POM) for PVDF or PEEK stoppers of the classic-Volume 2-mL Oroboros chamber), with O-ring\Viton\18x2 mm and V-ring\30-35-4.5 mm. Two units of this item are standard components mounted on the Oroboros Main Unit.
Oroboros Chamber-Holder sV
32100-01.jpg
Oroboros Chamber-Holder sV (black POM) for PVDF or PEEK stoppers (0.5-mL small-volume Oroboros chamber), with O-ring\Viton\16x2 mm and V-ring\30-35-4.5 mm.
Oroboros FluoRespirometer
Oroboros FluoRespirometer
The Oroboros FluoRespirometer - the Bioenergetics Platform for high-resolution respirometry (HRR) and fluorometry, allows simultaneous monitoring of oxygen consumption together with either ROS production (AmR), mt-membrane potential (TMRM, Safranin and Rhodamine 123), Ca2+ (CaG) or ATP production (MgG). The Oroboros FluoRespirometer supports the add-on Oroboros Modules: TPP+ ISE-Module, pH ISE-Module, enabling measurement of mt-membrane potential with ion sensitive electrodes (ISE for TPP+ or TPMP+) or pH.
Oroboros Main UnitThe Oroboros Main Unit is a component of the Oroboros O2k or the NextGen-O2k (ยป more information). The Oroboros Main Unit consists of functionally defined, integral elements, the (Oroboros Main Unit, Oroboros Peltier Temperature Control, two O2k-Electromagnetic Stirrer Twin-Control units, two O2k-Amperometric OroboPOS Twin-Channels, Oroboros Barometric Pressure Transducer), which cannot be obtained separately.
Oroboros chamber
O2k-Chamber.jpg
Oroboros Chamber: Duranยฎ glass polished, with experimental volumes (V) of 2.0 mL (classic volume cV, 16 mm inner diameter) or 0.5 mL (small volume sV, Oroboros sV-Module, 12 mm inner diameter). The optical properties of Duranยฎ allow application of fluorometric sensors (Duranยฎ optical properties).
Oxia
Oxia.png
Oxia - HyperOxia to HypOxia: The Oxia generates gaseous oxygen and hydrogen by electrolysis of water using a proton exchange membrane (PEM). O2 and H2 gas can be used to control the O2 regime in the Oroboros O2k (Setting_the_oxygen_concentration) using the 10 mL Gas-Injection Syringes. Low oxygen concentrations (<50 ยตM) are used to mimic tissue normoxia or hypoxia. Hyperoxic conditions above air saturation (250-600 ยตM O2) are routinely used for high-resolution respirometry of permeabilized muscle fibers or to induce oxidative stress in cells and mitochondrial preparations.
PB-Module
PB-Module.jpg
The PB-Module has been developed for conducting measurements of PhotoBiology, including photosynthesis. It consists of the PB Light Source and electronic components which are an integral part of the NextGen-O2k. Measurements are recorded and evaluated with the DatLab 8 software.
PBI-Shredder O2k-Set
PBI-Shredder HRR-Set.JPG
PBI-Shredder O2k-Set: Auxiliary O2k-Tool for tissue homogenate preparation
PBI-Shredder SG3
PBI-Shredder SG3.jpg
PBI-Shredder SG3 for tissue homogenate preparation, heavy duty high torque SG3 driver with convertible handle, SG3 base with 3 position force setting lever (FSL), battery charger and two lithium ion batteries. The PBI-Shredder SG3 is included in the PBI-Shredder O2k-Set. Select 230 V or 120 V. Oroboros Instruments: world-wide distributor.
PH-Glass electrode
PH-Glass Electrode.JPG
pH-Glass electrode with BNC plug.
POS-Electrolyte Powder
POS Electrolyte powder.jpg
POS-Electrolyte Powder, KCl. The powder is dissolved in 10 ml distilled water to yield a 1 M KCl solution.
POS-Holder
Pos holder.JPG
The POS-Holder, made from blue POM, is screwed into the copper block of the Oroboros Main Unit, guiding the POS to the 2-mL Oroboros chamber, and keeping the SmartPOS/OroboPOS-Connector in a fixed position for sealing the Oroboros chamber with the POS-Seal Tip. In addition, the POS-Holder fixes the Oroboros chamber in an accurate rotational position by pressing against the angular cut of the glass chamber. Two units of this item are standard components mounted on the Oroboros Main Unit.
POS-Holder sV
32300-01.jpg
POS-Holder sV, made from black POM, to be screwed into the copper block of the Oroboros Main Unit, guiding the POS to the O2k-Chamber sV, and keeping the SmartPOS/OroboPOS-Connector in a fixed position for sealing the O2k-Chamber sV with the POS-Seal Tip. In addition, the POS-Holder sV fixes the O2k-Chamber sV in an accurate rotational position by pressing against the angular cut of the glass chamber.
POS-Membrane Ring
POS membrane holder ring.jpg
POS-Membrane Ring, PEEK, holds the membrane against the inner O-ring on the POS housing.
POS-MembranesFEP-membranes
POS membranes.jpg
POS-Membranes, FEP 25 ยตm; 40/Pck.
POS-Mounting Tool
POS mounting tool for membrane application 02.JPG
POS-Mounting Tool for application of POS-Membranes. It consists of two parts, (i) the membrane guide (larger diameter) and (ii) the membrane ring holder with O-ring\Viton\6x1 mm for holding the POS-Membrane Ring during membrane application. Since the O2k-Series G-0075 membrane ring holder have a 2 mm extended ridge for a better grip.
POS-Seal Tip
POS seal tip.jpg
POS-Seal Tip, black butyl rubber gasket with 3 mm pore. 4/Pck, for sealing the POS (sensor head) against the Oroboros chamber. Push the wetted POS-Seal Tip over the POS-sensor head, with the pore positioned centrally, not covering any peripheral area of the gold cathode. Do not stretch the gasket across the POS-sensor head.
POS-Service KitPOS-Service Kit, in Oroboros Accessory Box including all oxygen sensor service accessories for membrane mounting and service of the POS.
Packing\Oroboros Box 1
Packing O2k-Box1.JPG
Packing\Oroboros Box 1: for shipment of the Oroboros Main Unit, with polystyrene inlets. Keep the original packing material safely stored, for any future shipping purposes of the Oroboros Main Unit.
Packing\Oroboros Box 1+2Packing\Oroboros Box 1+2 for shipping the Oroboros. WorldWide delivery, insurance and handling are included in the Oroboros.
Packing\Oroboros Box 2
Packing O2k-Box2.JPG
Packing\Oroboros Box 2, for shipment of accessories.
Packing\Peli Case
Packing Peli Case.jpg
Packing\Peli Case: Watertight, crushproof, and dust proof case for safe transportation of the O2k:

Retractable extension handle, Strong polyurethane wheels with stainless steel bearings, Easy open Double Throw latches, Open cell core with solid wall design - strong, light weight, O-ring seal, Automatic Pressure Equalization Valve, Fold down handles, Stainless steel hardware and padlock protectors, 4 level Pick N Pluckโ„ข with convoluted lid foam, Special foam inlets for O2k.

Interior Dimensions: 21.48" x 16.42" x 12.54" (54.5 x 41.7 x 31.8 cm)
Pipette\Plastic\1 ml ungraded
Pipette Plastic 1 ml-ungraded.JPG
Pipette\Plastic\1 mL ungraded, for filling electrolyte into the reservoir of the OroboPOS.
Plunger\10 mm3
Plunger 10 mm3.JPG
Plunger\10 mm3 for Microsyringe\10 mm3 51/0.13 mm, spare.
Polishing Cloth
POS polishing cloth for cathode cleaning.jpg
Polishing Cloth for cathode cleaning. Replace the Polishing Cloth at intervals. A two-year interval may be considered in cases of intensive use.
Polishing Powder
POS polishing powder for cathode cleaning.jpg
Polishing Powder 0.3 ยตm and Polishing Powder 0.05 ยตm for cathode cleaning of OroboPOS and Q-sensors.
Power O2k Numbers
Power O2k Numbers.JPG
Power O2k Numbers: Single number to label the O2k in a Power O2k-Lab.
Power O2k-FluoRespirometer
Power O2k-FluoRespirometer
Power O2k-FluoRespirometer - optional configuration as additional system for increasing output combined with the O2k-FluoRespirometer (O2k-Series H). The Power O2k-FluoRespirometer includes the TIP2k and the O2k-sV-Module, and supports all add-on O2k-Modules of the Oroboros O2k. It can be added to an existing Oroboros O2k of any O2k-Series. This application does not require an additional ISS-Integrated Suction System and O2k-Titration Set. Furthermore, the OroboPOS-Mounting Tool of the OroboPOS Service Tools can be used from the available O2k and is not included.
Power O2k-Respirometer
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The Power O2k-Respirometer is an economical option for using additional O2k-Units to increase output in high-resolution respirometry.
Reference-Electrode\2.4 mm
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Reference-Electrode\2.4 mm: 2.4 mm diameter glass shaft, for ISE.
Replacement-Barrel
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Replacement-Barrel for Reference-Electrode\2.4 mm, 2.4 mm diameter glass.
Sample Holder
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Sample Holder - to protect susceptible samples from being damaged by stirring of the medium in the 2.0 mL O2k-chamber.
Scissors\stainless steel\straight Tip\sharp
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Scissors\stainless steel\straight Tip\sharp.
Screwdriver allen wrench
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Screwdriver allen wrench, a standard component of the O2k-FluoRespirometer and O2k-sV-Module.
Shredder-Tube Ram Tool
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Shredder-Tube Ram Tool: component of PBI-Shredder O2k-Set.
Shredder-Tubes
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Shredder-Tubes: consisting of Shredder Tube FT500-PS with Lysis Disk, serrated Shredder-Tube Ram Tool and Shredder-Tube Cap Tool, coral colour (Box of 100) and Shredder Tube FT500-PMS with Lysis Disk, serrated Shredder-Tube Ram Tool and Shredder-Tube Cap Tool, coral colour (Box of 100). There is no difference between the white and the coral shredder tubes, except that the white tubes are also approved for high pressure.
Smart Fluo-Sensor Blue
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Smart Fluo-Sensor Blue: Excitation LED 465 nm (dominant wavelenght) with short pass filter, emission (red) with long pass filter, individual sensors are calibrated with sensor-specific memory and direct input into DatLab 7 to obtain reproducible light intensities with different sensors, including photodiode, Filter-Cap equipped with Filter Set Saf for measurement of mitochondrial membrane potential with safranin and rhodamine 123. Filter Set MgG / CaG for Magnesium green and Calcium green measurements are included.
Smart Fluo-Sensor Green
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Smart Fluo-Sensor Green: Excitation LED 525 nm (dominant wavelength) with short pass filter, emission (red) with long pass filter, individual sensors are calibrated with sensor-specific memory and direct input into DatLab 7 to obtain reproducible light intensities with different sensors, including photodiode, Filter-Cap equipped with Filter Set AmR for Amplex UltraRed and TMRM measurements when delivered.
SmartPOS
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The SmartPOS is a polarographic oxygen sensor (POS), for O2k-Series J and XB onward, with an amperometric mode of operation. The SmartPOS combines the previous OroboPOS and OroboPOS-Connector and is automatically recognized by the software DatLab 8. Combination of the previously separated components in one piece, protects the electrical connections. The SmartPOS is, like the OroboPOS, a Clark type polarographic oxygen sensor (POS), which remains the gold standard for measuring dissolved oxygen in biomedical, environmental and industrial applications over a wide dynamic oxygen range. The SmartPOS meets the highest quality criteria in terms of linearity, stability and sensitivity of the signal.

The sensor consists of a gold cathode, a silver/silverchloride anode and a KCl electrolyte reservoir separated from the sample by a 25 ยตm membrane (FEP). With application of a polarization voltage (0.8 V), a current is obtained as an amperometric signal.
Startup O2k-Respirometer
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Startup Oroboros O2k - the experimental system complete for basic high-resolution respirometry (HRR). The O2k includes the Oroboros Main Unit with stainless steel housing, Oroboros Assembly Kit, two OroboPOS (polarographic oxygen sensors) and OroboPOS-Service Kit, DatLab software, the ISS-Integrated Suction System, the O2k-Titration Set, and for performing high-resolution respirometry with reduced amounts of biological sample the O2k-sV-Module.


The Oroboros is a sole source apparatus with no other instruments meeting its specifications.
Stirrer-Bar sV\white PVDF\11.5x6.2 mm
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Stirrer-Bar sV\white PVDF\11.5x6.2 mm, operated in the 0.5-mL O2k-Chamber sV at constant stirring speed (standard is 750 rpm, or 12.5 Hz), to provide optimum mixing of the sample in the aqueous medium and ensure a stable signal of the polarographic oxygen sensor (OroboPOS) placed in a position of maximum current of the medium.
Stirrer-Bar\black PEEK\15x6 mm
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Stirrer-Bar\black PEEK\15x6 mm, for 2-mL O2k-Chamber, for specific optical applications to minimize optical interference.
Stirrer-Bar\white PVDF\15x6 mm
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Stirrer-Bar\white PVDF\15x6 mm, operated in the 2-mL Oroboros chamber at constant stirring speed (standard is 750 rpm, or 12.5 Hz), to provide optimum mixing of the sample in the aqueous medium and ensure a stable signal of the polarographic oxygen sensor (OroboPOS) placed in a position of maximum current of the medium.
Stopper sV\black PEEK\conical Shaft\central Port
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Stopper sV\black PEEK\conical Shaft\central Port: with conical shaft (with PTFE, graphite, carbon fiber) and one central capillary (1.0 mm diameter; 48.9 mm length), Volume-Calibration Ring sV (A or B) for volume adjustment 0.5 mL; 2 mounted O-rings (O-ring sV\Viton\9.5x1 mm).
Stopper-Needle
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Stopper-Needle: Short needle for bubble extrusion from port of the ISE-stopper.
Stopper-Spacer
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Stopper-Spacer (or gas spacer) to set the Oroboros Stopper into a standard position for a fixed gas phase above the aqueous phase in the 2-mL Oroboros chamber, during air calibration or for injection of nitrogen, argon or oxygen into the gas phase; Stopper-Spacer thickness of 4mm (a deviation of +/- 10% possible).
Stopper\black PEEK\angular Shaft\side+6.2+2.6 mm Port
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Stopper\black PEEK\angular Shaft\side+6.2+2.6 mm Port, for application with ISE; side titration port and two additional holes (6.2 mm and 2.6 mm); angular bottom; including Volume-Calibration Ring (A or B); 2 mounted O-rings, with 8 spare O-rings (O-ring\Viton\12.5x1 mm).
Stopper\black PEEK\conical Shaft\central Port
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Stopper\black PEEK\conical Shaft\central Port: with conical shaft (with PTFE, graphite, carbon fiber) and one central capillary (1.3 mm diameter; 50.6 mm length), Volume-Calibration Ring (A or B) for volume adjustment 1.5 to 3.2 ml; 2 mounted O-rings, with 8 spare O-rings (O-ring\Viton\12.5x1 mm). The black PEEK stoppers are required for optical Oroboros MultiSensor Modules.
Stopper\black PEEK\conical Shaft\central Port\peripheral 2.3 mm Port
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Stopper\black PEEK\conical Shaft\central+peripheral 2.3 mm Port: for potentiometric O2k-MultiSensor applications (NO, H2S, H2O2); 1 additional port (2.3 mm); central titration port; conical bottom; including Volume-Calibration Ring (A or B); 2 mounted O-rings, with 8 spare O-rings (O-ring\Viton\12.5x1 mm).
Stopper\black PEEK\conical Shaft\central+2.3+2.6 mm Port
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Stopper\black PEEK\conical Shaft\central+2.3+2.6 mm Port: for pH and reference electrode, central titration port and two additional ports (2.3 mm and 2.6 mm); conical bottom; including Volume-Calibration Ring (A or B), 2 mounted O-rings, with 8 spare O-rings (O-ring\Viton\12.5x1 mm).
Storage box sV
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Storage box sV empty, for storage of O2k-sV-Module components.
Syringe Collars
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Syringe Collars (package of 20) for Hamilton microsyringes: for correctly storing the microsyringes in the Syringe Racks.
Syringe Labels
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Syringe Labels: set of labels with standard abbreviations (see Manual titrations of SUIT chemicals).
Syringe Racks
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Syringe Racks: stainless steel; for proper placement of eight Hamilton microsyringes in HRR experiments; package of two (for a total of 16 microsyringes).
Syringe Storage Box
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Syringe Storage Box: for storing the Hamilton microsyringes; includes Syringe Labels.
Syringe\10 mL\Gas-Injection
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Syringe\10 mL\Gas-Injection, 10 mL, with spacer and stainless steel needle, flat tip, for gas injection into the Oroboros chamber. 2 syringes are supplied with Oxia.
Syringe\500 mm3 51/0.41 mm
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Hamilton Syringe\500 mm3 51/0.41 mm for manual titrations, 500 mm3 volume; fixed needle with rounded tip: 51 mm length, 0.41 mm inner diameter; for injections of suspensions of isolated mitochondria and filling of the Microsyringe\200 mm3\TIP2k.
Syringe\60 mL\Gas-Injection
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Syringe\60 mL\Gas-Injection, 60 mL, with spacer and stainless steel needle, flat tip, for gas injection into the Oroboros chamber.
TIP2k Filter Papers
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TIP2k Filter Papers (package of 10) to be used for the stoppers during TIP2k titration for Instrumental oxygen background correction to avoid constant manual siphoning off of extruded liquid.
TIP2k-Module
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TIP2k-Module - Titration-Injection microPump (TIP2k) for two-channel operation with the O2k-FluoRespirometer with automatic control by DatLab of programmable titration regimes and feedback control (oxystat, pH-stat).
TIP2k-Needle Safety Support with cable guide
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TIP2k-Needle Safety Support with cable guide: for safe storage of TIP2k-needles and MultiSensor Modules cables when not required during the experiment.
TIP2k-Needle Spacer
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TIP2k-Needle Spacers for microinjection TIP2k needle, silicone stops (200/Pkg.) with mounting tool.
Titration-Injection microPump
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Titration-Injection microPump (TIP2k) for two-channel operation with the O2k with automatic control by DatLab of programmable titration regimes and feedback control (oxystat, pH-stat).
Tube Racks
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Tube Racks: stainless steel, accomodating four 50-ml tubes, for cleaning of microsyringes, cleaning and storage of stoppers during cleaning of the Oroboros chambers; package of two (for a total of eight tubes).
USB-Cable 2.0\Type A-B
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USB-Cable 2.0\Type A-B for connecting the Oroboros Main Unit (O2k-Series E upwards) to the USB port of a PC or laptop.
V-ring\30-35-4.5 mm
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V-ring\30-35-4.5 mm, mounted on O2k-Chamber Holder and O2k-Chamber Holder sV.
Volume-Calibration Ring
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Volume-Calibration Ring (A or B) PVDF for O2k-Stoppers (2-mL Oroboros chamber), white; attached to the stoppers.
Volume-Calibration Ring sV
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Volume-Calibration Ring sV (A or B), white PVDF, attached to Oroboros PEEK Stopper sV.
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