BOMEX 5 Piece Graduated Glass Beaker Set - Includes 50mL, 100mL, 250mL, 600mL, and 1000mLStarter Set of 5 Beakers Sizes (ml) 50, 100, 250, 600, 1000 Authentic BOMEX Brand Borosilicate Glass with White Enamel Graduations Sold As Set Graduated Bomex Beaker Set of 5. Includes 1 each of 50 ml, 100 ml, 250 ml, 600 ml and 1000ml beakers. All glass, made from Borosilicate glass. Double graduations, reinforced rim. Accuracy is + 5% at full capacity. These are authentic Bomex brand not Karter Scientific or any other brand.