Made of 3.3 borosilicate glass (upper grade). These beakers are stronger than standard beakers. High mechanical resistance thanks to a thick and reinforced wall, which is less prone to breakage during washing, has longer life time and increased user safety. Graduated and with spout. According to ASTM E 438 and ASTM E 960. Caution: This glassware is not recommended for use on hot plates
reference: BKLR-4K0-001, capacity: 4000 ml, graduation (ml): 250 ml, graduation range: 250 - 3500 ml, pcs/pack: 1