Safety cap for NoChromix cleaning reagent

Premeasured packet of chemical to add to concentrated sulfuric acid. Resulting metal-free cleaning solution removes stains, deposits, and silicones from glassware. Substitute for dichromate. Safety cap for NoChromix-acid mixture safely vents vapor-pressure build-up. May be used directly on 4-kg (8.8 lb) size reagent bottle (such as Prod. No. 97909).