250ml Pear Shape Glass Separatory Funnel with 24/40 Joint & Glass Stopcock - Lab Glassware for Chemical Extraction, Essential Oil Distillation & Chemistry Experiments

Pyriform Separatory Funnel,24/40,250ML,Glass Stopcock with Screw,Pear Shape 1 Be made of G3.3 borosilicate glass. This borosilicate glass with low linear coefficient of expansion is ideal choice for fabricating laboratory glassware. Annealing Point ------560℃ Linear Coefficient of Expansion ------ 32×10-7/℃ Softening Point ------820℃ 2 The thickness of the flask is 2.5mm.