Glass cell (cuvette) made of special optical glass for measuring the interfacial tension between two fluids according to the Pendant Drop method or the contact angle of a fluid drop or a gas bubble in a fluid (e.g. Schultz method) ; up to 70° C.Also available in 'high' temperature version (GC xxHT) and made of Quatrz glass (GC xxQ); 70 to 350° C.