Tenders Are Invited For Laboratory Glassware – Framework Agreement For Ground Glass With A Folded Edge (Plane Flange) And Ground Glass Pane (Closure)

Laboratory Glassware – Framework Agreement For Ground Glass With A Folded Edge (Plane Flange) And Ground Glass Pane (Closure). The Glass Vessels Are Needed To House And Preserve Zoological Specimens In Alcohol In The Zoological Collections Of The Vertebrate And Invertebrate Departments. Different Zoological Collection Material Should Be Stored In The Jars For The Long Term (> 50 Years) In 70% Denatured Alcohol (Mek) Or Formalin (4-10%). The Collection Objects Can Release Oils And Fats Or Formalin That Was Originally Used For Fixation. Therefore, The Glass Should Be Chemically Stable, Physiologically Harmless And Not Interact With The Collection Material. The Glass Cylinders Should Be Identical In Construction And Design, And The Closures Should Be Freely Interchangeable. For The Preservation And Storage Of Cultural Heritage Collections, There Are Special Qualitative Requirements Regarding The Chemical Stability And Reactivity Of The Glasses Used For The Long-Term Preservation And Security Of The Collection Objects.