Product Description: Karter Scientific is a United States-based company dedicated to providing the best quality glass and plastic ware. MIXED LAB WARE SET, GLASS, 9 PIECES: Essential Glassware set made of high quality, heavy duty, borosilicate 3.3 glass. Includes 1 Low Form Glass Beaker Set - 3 sizes - 50ml, 100ml & 250ml, 1 Glass Graduated Cylinder Set - 3 Sizes - 10ml, 50ml & 100ml and 1 Glass Erlenmeyer Flask Set - 3 Sizes - 50ml, 150ml & 250ml. Beakers and flasks feature white, printed graduations, and beaded rims. Cylinders feature burgundy color printed graduations, hexagonal bases. GLASS BEAKER SET, 3 SIZES - 50ml, 100ml, & 250ml: 50ML - 42mm x 60mm / 1.7" x 2.4" (approx.) 100ML - 53mm x 74mm / 2.1" x 2.9" (approx.) 250ML - 70mm x 98mm / 2.8" x 3.9" (approx.) ASTM Reference - E960 Specification for Laboratory Glass Beakers Type I Class A - 3.3 Borosilicate Glass Double Metric Scale Graduations Extra Large Marking Spot GLASS GRADUATED CYLINDER SET, 3 SIZES - 10ml, 50ml, & 100ml: 10ML - 16mm x 150mm / 0.6" x 6.0" (approx.) 50ML - 27mm x 196mm / 1.1" x 7.7" (approx.) 100ML - 32mm x 244mm / 1.3" x 9.6" (approx.) Type I Class A - 3.3 Borosilicate Glass Class B GLASS ERLENMEYER FLASK SET, 3 SIZES - 50ml, 15ml, & 250ml: 50ML - 54mm x 77mm / 2.1" x 3.0" (approx.) 150ML - 75mm x 124mm / 3.0" x 4.9" (approx.) 250ML - 85mm x 148mm / 3.3" x 5.8" (approx.) Type I Class A - 3.3 Borosilicate Glass Graduated USA PACKAGING: Our products are packaged in the USA using USA sourced material If you received broken items, please let us know for full refund or replacement. Thank you! Contains 1 each Beaker Set, Flask Set, and Graduated Cylinder Set High quality inert 3.3 borosilicate glass ASTM Specification E960, Type I requirements Heavy Duty Reusable