Uxcell Small Glass Sample Bottles with Lids, 5Pcs 30ml Amber Glass Vials with Black Screw Caps Mini Leak Proof Reagent Sealed Bottles with Scale for Solid Liquid Powder Storage

Made from borosilicate glass, which is excellent durability and heat-resistance. They are chemically resistant and maintain their transparency even after repeated use. Designed with a smooth bottle mouth that perfectly fits the screw cap, ensuring a tight and secure seal. This leakproof feature prevents liquid from spilling or leaking out of the bottle, minimizing the risk of evaporation and exposure to external elements.