โถแก้วดูดความชื้น Desiccators glass-vacuum,Isolab

Manufactured thick, robust and heat resistant, durable borosilicate glass with a vacuum stopcock. Featured with a 2-way high vacuum stopcock enabling consistent and uniform vacuum draw and release. Vacuum stopcock can hold maximum vacuum of 1 Torr more than 24 hours. Excellent smooth grinded body and lid flanges guarantee airtight closure. Supplied with a porcelain perforated desiccator plate.