Portable Activity/Toxicity Meter

Portable Activity/Toxicity Meter

The new portable EZ-BOD Meter from Bioscience, Inc. can be programmed to evaluate biomass activity and the toxicity of a specific waste stream in as little as 15 minutes. The 15 minute specific oxygen uptake rate (SOUR) reports milligrams of oxygen consumed per hour per gram of biomass. It can be used to evaluate the activity of an activated sludge mixed liquor or the stability of digested waste activated sludge.

A second pre-programmed test takes up to two hours and evaluates the immediate and recovery oxygen uptake associated with the introduction of an influent stream or compound to a biomass. Oxygen uptake date is collected for 1 to 2 hours, and results are reported in milligrams of oxygen per liter to determine the toxicity, treatability or inhibitory characteristics of the influent stream or compound. Unlike other "toxicity" monitors which use marine microbes or bioluminescence, this BOD instrument uses the actual microbes from the treatment system to determine toxicity. The results are directly correlatable to treatment plant response.

The EZ-BOD device is pre-programmed to perform SOUR tests (U.S. 503 Sludge Regulations); one-hour biotreatability evaluations (ASTM-Method 4478); ST-BOD BOD5 estimation tests; and dissolved oxygen measurements. The size of a large briefcase, it can be used in the field with rechargeable batteries or as a bench-top instrument.

Bioscience, Inc., 1550 Valley Center Parkway, Suite 140, Bethlehem, PA 18017: Tel. 610-974-9693; Fax. 610-691-2170.