Bel-Art SAFE-LAB Teflon Resin Stoppers Hollow SCIENCEWARE F201971550. They will not react with acid alkalies or salts. The SAFE-LAB PTFE stoppers have slightly thicker walls than glass stoppers so that acids and alkalis can be added without worrying...
Bel-Art SAFE-LAB Teflon Resin Stoppers Hollow SCIENCEWARE F201971550. They will not react with acid alkalies or salts. The SAFE-LAB PTFE stoppers have slightly thicker walls than glass stoppers so that acids and alkalis can be added without worrying...