Twistit: Four Stoppers in One Products for Science Education

Multi-purpose and economical

Rubber Stoppers for 800mL Kjeldahl Flasks

Light tan rubber stoppers

Stopper Assortments Products for Science Education

Soft, durable, resilient rubber designed for long life.

Rubber Stoppers for Kjeldahl Flasks

Light tan rubber stoppers

Walters Crucible Holder Products for Science Education

High-quality holder.

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

PlasticoidSupplier Diversity Partner RUBBER STOPPER NO3 APPX

14-130EE RUBBER STOPPER NO3 APPX RUBBER STOPPER NO3 APPX

  spinner