Plasticoid Walter Crucible Holder

Rubber with removable glass stem ground at 45° angle

Plasticoid Crucible Holders

Holders for glass crucibles

Plasticoid Neoprene Flask Support

Remains useful even after long exposure to moderate heat

Stopper Assortments Products for Science Education

Soft, durable, resilient rubber designed for long life.

Twistit: Four Stoppers in One Products for Science Education

Multi-purpose and economical

Walters Crucible Holder Products for Science Education

High-quality holder.