DWK Life Sciences (Wheaton) BOD Bottle Cap With Foam Insert
By DWK - Wheaton Science Products
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.