A Clear Screw Cap Reagent Bottle is a transparent glass container used in labs to store chemicals, featuring a secure, easy-open screw-on cap (often plastic/PE) for airtight sealing, perfect for light-stable liquids, with narrow or wide mouths available in various sizes (mL), often made from durable borosilicate glass. These bottles allow visual inspection of contents and prevent contamination, with options for pouring rings and graduations.