NIOSH-Approved N95/N99 Masks for about $1 Get them now!
This complete set is used for the recrystallization of small quantities of reaction product. It consists of a glass outer tube with a non-uniform grind to purposely allow leakage and a PTFE inner plug. The glass tubes holds 1.0 mL or 2.0 mL of solution as measured below the ground seat. Available as complete sets and individual component parts.