Laboratory Porcelainware is used in Laboratory Preparation and Empty Gelatin or Vegan Capasule Filling. We offer a selection of crucibles for research, experiments, chemical analysis, testing, quality control and education. Our Porcelain Crucible come in several sizes and come with a correspondingl lid sizes. Crucibles are highly resistant acids and bases, and be used to up to 1000° C (1832° F). Buy all your Lab Supplies at discount prices, no account necessary. Order Conveniently Online. Guaranteed Fast, Secure, & Discreet Delivery. Overnight shipping is available.