UserName
Browse a range of Plasticoid stoppers, flask supports, crucible holders, and other products to support your classroom and laboratory needs.
Light tan rubber stoppers
Permit insertion of hypodermic needles
Rubber with removable glass stem ground at 45° angle
Glass funnel
Size
Holders for glass crucibles
Remains useful even after long exposure to moderate heat
High-quality holder.
Multi-purpose and economical