PF-4000 and PF-8000 Respirometers PDF Print

 


PF-4000 and PF-8000 Respirometers

RSA’s PF-4000 and PF-8000 Pulse-Flow respirometers are designed specifically to measure oxygen uptake for aerobic biological reactions and gas production from anaerobic and anoxic biological reactions. Modular system design allows easy expansion. The 8-position PF-8000 units can be expanded easily to 16 and 24-position units. The 4-position PF-4000 units can be expanded to an 8-position system.

 

 

Pulse-Flow Respirometers
 

PF-4000, PF-8000

 

PF 8000 Pictured               
 

Applications:

· Biodegradation Assessments

 

· Activated Sludge Respiration (ASR) Tests

 

· OUR Fingerprinting (OUR Respirograms)

 

· Biomass Activity Tests

 

· Extant Kinetic Measurements

 

· Performance Evaluations

 

· Toxicity Assessments

 

· Short-Term BOD Measurements

 

 

 

 


System Configuration
 

 

PF-4000 and PF-8000 Respirometers

RSA’s PF-4000 and PF-8000 Pulse-Flow respirometers are designed specifically to measure oxygen uptake for aerobic biological reactions and gas production from anaerobic and anoxic biological reactions. Modular system design allows easy expansion. The 8-position PF-8000 units can be expanded easily to 16 and 24-position units. The 4-position PF-4000 units can be expanded to an 8-position system. Oxygen uptake is measured at rates as low as 0.05 mg/min and as high as 1,200 mg/hr. Units can be used in a constant-temperature incubator or can be fitted with optional water bath and heating/cooling units.

 


Features

 


Accuracy and Precision

High accuracy and precision are accomplished through quality design and construction. Each system is factory-calibrated to ensure accuracy.

 


Collection Data

 

Oxygen or gas flow data are monitored by computer and stored in convenient spread-sheet format for ease of data evaluation. The PF Systems software was designed for user convenience and provides on-screen tabular and graphical indications of the cumulative oxygen uptake and gas flow rates. Data record intervals can be set at intervals ranging from 1 to 720 minutes.


Operation

 

The operation of PF respirometer systems is simplified through the use of standard laboratory glassware. No grease or specialized lubricants are required to seal the reaction vessels, thereby reducing the set-up and cleanup time. Gas or liquid samples can be withdrawn easily from reaction vessels at any time during a test.

 


Flexibility

 

PF respirometers allow maximum flexibility in application. Operation in the low-flow mode provides maximum sensitivity for monitoring low-rate aerobic or anaerobic reactions. Operation in high-flow modes allows measurement of oxygen uptake or gas production for large laboratory-scale pilot plants at rates in excess of 360 mL/hour. Reactor volumes for normal respirometric applications are 500 mL, but can range from less than 50 mL to 2 L or larger.


Specifications

PF-4000 and PF-8000
 

   

Equipment Items

Specifications

4- or 8-position flow measuring base

USB output to any computer for data acquisition*

Accessories kit

4 or 8-position magnetic stirring base

Readout interval (1 to 720 minutes)

Electrical requirements (110 to 240 VAC, 50-60Hz)
 

Reaction vessel size (50 mL to 2+ L)

Temperature of operation (5 to 70OC)

Minimum flow rate detection: < 0.05 mg O2

Maximum flow capacity: ~ 360 mg O2/min

Sensitivity: as low as 0.05 mg

Measurement precision: < 3% CV
 

*Requires Pentium 233+ Computer with 500 MB+ HD, CD, USB port, and Windowstm XP+