These volumetric flasks are batch certified and are calibrated at 20 degrees Celsius To Contain.

• Borosilicate glass fabrication
• Polyethylene stopper construction
• Durable white marking spot

They feature a single graduation ring and polyethylene stopper with marking spot.

Made from ASTM E438 Type 1 Class A Borosilicate 33 expansion glass as per ASTM specification E237 and E288. Durable white color printing which has good life in laboratory environment.