Products

PF-8000 Respirometer
 

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When operating in the aerobic mode, oxygen – from a supply of pure oxygen – is added in small increments into each respirometer vessel in response to oxygen uptake and carbon dioxide absorption. This mode of operation maintains a constant oxygen concentration in the headspace within the reaction vessel. Oxygen transfer from the headspace to the liquid phase is accomplished by using magnetic stirring units having high mixing rates. When operating in anoxic or anaerobic modes, gases produced by biological reactions flow into an internal storage chamber and are released when a pre-set pressure buildup is detected by a pressure transducer. These incremental volumes are carefully controlled through accurate calibrations established by RSA.

16 and 24-position system are available. Eight-position systems can be expanded to 16 and 24-position systems with addition of satellite flow-control modules. All units of a system are connected to a single computer for data acquisition.

PF-4000 Respirometer
 

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RSA’s PF-4000 is a 4-position respirometer with the same features of our PF-8000 Pulse-Flow respirometer. They are designed specifically to measure oxygen uptake for aerobic biological reactions and gas production from anaerobic and anoxic biological reactions, but in a smaller footprint.

The WBC and Heater/ coolers or heater-only units are an important part of our respirometer systems. Since we use pressure to measure differentials, we state that you should operate your respirometer within plus or minus 1 degree Celsius to insure no errors due to temperature fluctuation. We can quote water baths and heater/coolers or heater-only units for your respirometer package, If you have an incubator or temperature control room you may eliminate the need of ordering temperature control from RSA.

The lowest increment of oxygen uptake is 0.05 mg. The highest oxygen uptake rate for the standard system configuration is 1,200 mg/hr. Rates can be increased more than 10-fold by adding simple plug-in flow expansion modules. These high rates are useful for monitoring oxygen uptake in large laboratory-scale pilot units.


All standard Pulse-Flow respirometer systems can be operated in aerobic or anaerobic modes without the need to purchase separate control modules or complicated hardware. Anaerobic-only or aerobic-only systems are available on request.

WBC Water bath and cover with DMS-8 Stirrer
 

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The WBC and Heater/ coolers or heater-only units are an important part of our respirometer systems. Since we use pressure to measure differentials, we state that you should operate your respirometer within plus or minus 1 degree Celsius to insure no errors due to temperature fluctuation. We can quote water baths and heater/coolers or heater-only units for your respirometer package, If you have an incubator or temperature control room you may eliminate the need of ordering temperature control from RSA.


The DMS-4 and DMS-8 (pictured above) stirring bases are designed and constructed with these features;

– Individual or simultaneous speed control

– Stirring speeds up to 1,500 rpm

– Minimal heat generation

– Stainless steel cabinets to eliminate corrosion

– Welded joints to eliminate water damage.

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