B.O.D. Bottle Cap with Foam Insert, Wheaton | DWK Life Sciences
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B.O.D. Bottle Cap with Foam Insert, Wheaton | DWK Life Sciences
This polyethylene cap complete with a closed cell foam insert snaps firmly over the flared mouth of DWK Wheaton B.O.D. bottles to prevent the evaporation of the water seal during the five day incubation period. The foam insert fits into the cap and exerts pressure on the bottle stopper to hold it securely in place.