Welcome to our M D Laboratory Supplies Inc

Part Number Name Standard Taper Stopper Size Diameter at Large End of Ground Zone (mm) Height Above Standard Taper Grind (mm) Length of Ground Zone (mm) Shelf-Pack Qty Case Qty Case Price, USD Quantity Add to Cart
41900R-13 Medium Length Standard Taper Pennyhead Glass Stopper 13 13.4 21 14.0 1 6 $56.87
41900R-38 Medium Length Standard Taper Pennyhead Glass Stopper 38 38.0 39 30.0 1 6 $209.92

Standard Taper size 13 stopper is solid, stopper size 38 is hollow

·         Designed from ASTM Specification E675

·         Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements