These 90mm PYREX® capillary melting point tubes are made from No. 7740 glass and have only one end open. All tubes have a 0.2-0.25mm wall range.
Product Family Description:
Made from Code 7740 borosilicate glass. The 100 and 90 mm sizes are available with both ends open or with one end open and one closed. All tubes have a 0.2 mm to 0.25 mm wall range.