- Made of high quality, heavy duty, borosilicate 3.3 glass
- Class A tolerance conforms with ISO 1042 standards
- Includes calibration certificate from ISO accredited testing lab
- Fitted with an interchangeable polyethylene stopper
- Features a single graduation mark for precise dilution and preparation
Volumetric flask made of high quality, heavy duty borosilicate 3.3 glass. Features a single graduation mark and polyethylene stopper. Class A tolerance and calibrated to contai - includes calibration certificate. Autoclavable, with superior chemical durability. Low temperature gradient - can withstand high temperatures & thermal shocks. Eisco Labs borosilicate glass has the following heat tolerances: Strain Point 515°C | Annealing Point 565°C | Softening Point 820°C.