Linear Coefficient of Expansion ------ 32×10-7/. The thickness of the flask wall is 2.5mm. 3 All of the joint is 24/40.This kits has 22 kinds of parts as below. 1.250ml 2-neck round bottom flask 1pc 2.500ml 3-neck round bottom flask 1pc 3.1000ml round bottom flask 1pc 4.2-neck 1000ml round bottom flask 1pc 5. Claisen adapter 1pc 6.3-way Distillation adapter, 75° 1pc 7. Three way Thermometer adapter 75° 1pc. Three way Thermometer Adapter 75° 1pc. 13.300MM Liebig condenser 1pc. 14.300MM Allihn condenser 1pc 15.300MM Graham condenser 1pc 16.300MM Vigreux Distillation Column 1pc 17.250ml Separatory funnel 1pc 18. Hexagonal hollow glass stopper 5pcs 19. Plastic ground joint clamp 20pcs. PH Indicator Paper PH 1-14 2Packs(80PCS). All of the above parts can be substitute with the parts which customer require. We can provide special shape, special wall, special capacity heavy wall laboratory glassware. We will be very glad to help you. We would try our best to reply to you ASAP. The item "24/40, Super Lab glassware kit, Organic Chemistry Laboratory Glassware Kit" is in sale since Thursday, October 22, 2015. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical, Lab & Dental Supplies\Glassware & Plasticware\Other Medical & Lab Glassware". The seller is "nanshinglass" and is located in , . This item can be shipped worldwide.