For staining and cleaning coverslips and coating them with materials such as polylysine or silane

Jars meet USP Type III standards.

Jars hold up to four coverslips with a 17–23mm (¹¹/₁₆–²⁹/₃₂") width and up to 30mm (1³/₁₆") in length. Longer coverslips may be accomodated by removing the cap. Jars are made from Type III glass and are resistant to most chemicals. White polypropylene screw cap comes with a PTFE-coated polyethylene liner.