WHEATON® Glass Reagent Bottles, 2000mL or 135oz Clear, 29/32 Finish, Type I Borosilicate Glass. (2000 mL Bottle, Narrow Mouth Clear, Ground Glass Stopper) 2000mL Glass Reagent Bottle, Clear, Ground Stopper, case/6. Borosilicate Glass Narrow Mouth Reagent Bottle with Ground Glass Stopper. Clear borosilicate glass bottle and stopper