DWK Life Sciences (Wheaton) BOD Bottle Cap and Insert, Polyethylene, Natural

This polyethylene cap, complete with a closed cell foam insert, snaps firmly over the flared mouth of Wheaton® BOD bottles. This closure prevents the evaporation of the water seal during the five-day BOD incubation period. The foam insert fits into the cap and exerts pressure on the bottle stopper to hold it securely in place.

• Polyethylene cap prevents evaporation of the water seal during the five-day BOD incubation period
• Includes foam insert to exert pressure on the bottle stopper to hold it securely