Watch Glass Beaker Lid Set 16 32 5mm Laboratory Measuring Cup Lid Optical Glass Biconvex Lens Kit for Watchmaker Repair Laboratory Leak Proof Evaporation
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【Double-bu mineral glass material】 High borosilicate glass: temperature difference rapid change does not crack, hydrofluoric resistance, light transmittance 92.5%, special process: flame polishing , no burr does the hand
【Arch face convex back concave design】 Sealing performance: concave fit beaker mouth, suitable for 16/19/24/29/32.5mm international standard caliber, convex dome structure, reserved 5ml evaporation buffer space, dust leakage prevention
【Chemical compatibility】 Withstand reagents: strong s/bases, organic solvents, oxidizing agents, special applications: autoclaving, cryogenic freezing, microwave heating.
【Packaging system】 34 pieces individually packed, each piece individually PE film packaging, shock and pressure resistance, suitable for 90% of the laboratory beaker combination needs
【Wide range of applications】 Suitable for use as laboratory measuring cup lids and watch lens accessories, the set contains a large number of products
