Autoclave Safe Glassware , 500 Ml, Borosilicate Glass With PTFE Screw Cap Conical Shape White Graduations Erlenmeyer Flask Suitable for measuring flour, sugar, vinegar, sauce or other liquid. Made from Boro 3.3 glass, this flask meets DIN ISO 1773 standards, ensuring durability and reliability in various laboratory environments. Features and Benefits After-Sales Service: Labvida always persists in “Quality First, Customer First”. Bello Borosilicate 3.3 Glass Conical Flask 50 ml with Graduation Marks Convenient to use: Printed graduation, Extra large marking spot , Tolerance: approximately +/- 5% Appreciate your support and patience., Volume: 500ml(16., 9oz) Volume: 500 ml (17 ounces) · Material: Made of high-quality 3.3 borosilicate glass with uniform wall thickness · Easy to use Labvida Glass Erlenmeyer Flasks are made of 3., 3 Borosilicate glass material which could withstand repeated standard autoclave cycles of 121°C at 15 psi for 5 minutes, uniform wall thickness provides the proper balance between mechanical strength and thermal shock resistance. 500ml Narrow Mouth Glass Erlenmeyer Flasks, with printed graduation and marking area. Contains 6pcs of Vol.