Sigma-Aldrich
Scienceware?heavy-duty test-tube rack
Scienceware?POXYGRID?test-tube rack
Scienceware?rotary separatory funnel rack
Serrated natural rubber septa
Spinbar?magnetic stir bar
Spinbar?磁力搅拌棒
Vapor duct for Büchi?model B-585 ovens
Wilmad?NMR tubes 5 mm diam., precision
Wilmad?NMR 管,直径 5 mm,精度型