100 ml capacity, Tolerance ±0.20 ml, Socket size 14/23 Class 'B' borosilicate glass Chemical resistant polyethylene stopper Blue markings Borosilicate glass with one graduation mark. Fitted with chemical resistant polyethylene stopper. As per DIN ISO 1042 standard. Blue graduation. Cap. 100 ml, Tolerance ±0.20 ml, Socket size 14/23 Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point -515°C | Annealing Point 565°C | Softening Point 820°C. Calibrated to contain. Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following the highest standards of quality control. Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind. They are manufactured with only the highest grade, raw materials and according to international quality standards to ensure that they can withstand use in even the toughest laboratory environments.