Testimonials
“We have found the performance of the system to be quite satisfying and user friendly. We are currently running low level O2 uptake experiments and are impressed with the sensitivity of the instrument.”
“I have found the performance of the Challenge AER-200 to be unmatched. The precise measurement of oxygen consumption, homogenous mass transfer of test materials, and constant and consistent operating temperature have enabled me to obtain extremely accurate test results, particularly as compared to other respirometer systems. I find the Challenge system to be extremely user friendly.”
AER-200 Respirometer
Designed for batch and laboratory applications, the AER-200 Respirometer can be used for both aerobic and anaerobic wastewater applications.
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AER-200S Soil/Compost Respirometer
A uniquely designed reaction chamber for determining soil, compost, and/or biosolids respiration rates.
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ODM-100 Oxygen Demand Monitor
The ODM-100 Oxygen Demand Monitor is a rugged unit designed to measure and record oxygen demand either continuously or in batch mode according to your needs.
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DFM-502 Dual Digital Flow Meter
The DFM-502 dual digital flow meter was designed to replace wet test meters and similar low-flow devices for measuring gas flow from points of production or to points of use.
Jar Tester JTA-204 Portable Jar Tester
Challenge Technology took the extremly reliable and light stirrer and made the only truly portable jar tester.
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MS-300 Magnetic Stirrer
The MS-300 Series stirrer was developed to meet the high stirring speeds required to eliminate oxygen transfer limits and yet remain spin-off proof.
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QuickScan BOD Analyzer
The Quick Scan BOD Analyzer is designed to meet the needs of treatment plant operators desiring fast, easy screening of wastewater samples.