Constructed from glass, borosilicate glass or soda-lime glass, reagent bottles feature stoppers or caps, which protect the contents from spilling or outside environmental contamination. Reagent bottles are excellent for storing powders and liquids. Reagent bottles are available with narrow mouths for better control while pouring, or wide mouths for easy filling or content retrieval. Aijiren produce all the reagent bottle and caps in Class 100000 Cleanroom.