This 2000ml volumetric flask, made of durable polypropylene, features a Class A ASTM certification and comes with a secure polypropylene stopper for accurate measurements Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind. 2000ML || 2000ml volumetric flask with polypropylene stopper (29/32) Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following the highest standards of quality control. Volumetric Flask 2000ml Volumetric Flask, 2000ml - Class A - 29/32 Polyethylene Stopper Borosilicate Glass Blue Graduation Tolerance 0 600 Eisco Labs High Heat Tolerance Chemical Durability Borosilicate Glass AST Voluetric Flask With Glass, 57% OFF TRANSPARENT || Clear to provide easy visibility of liquid Borosilicate glass graduation mark, fitted with plastic stopper, in compliance with ASTM-E288 standardCalibrated to contain. 2000ml Laboratory Flask Eisco 2000mL Class A Volumetric Flask - Borosilicate Glass With Certificate Class A Borosilicate Flask GREAT FOR PROFESSIONAL LABORATORIES, CLASSROOMS & HOUSEHOLD || Superior chemical durability and heat tolerance.