Corning 2975-245 Borosilicate Glass Rectangular #1 Cover Glass, 24mm x 50mm (Case of 1000) - Ideal for Laboratory Slides, Microscopy & Science Experiments

The unique chemically stable, heat-resistant, low-expansion borosilicate formula of PYREX glass from Corning has been trusted by scientists for more than 100 years. The unique chemically stable, heat-resistant, low-expansion borosilicate formula of PYREX glass from Corning has been trusted by scientists for more than 100 years. Corning microscope slides are precleaned so they can be used right from the box for non-sterile cytology and pathology applications. Our inspections for chips and rough edges before packaging minimize waste. The flatness of our cover glasses results in trouble-free fit to slides for a wettable and bubble-free mount. PYREX Low Actinic Labware is made from Code. No. 7740 glass with copper replacing the sodium in the glass matrix at the surface. PYREX assortment packs include one each of the most popular sizes of either beakers, cylinders, or Erlenmeyers. Low expansion, Type I, Class A borosilicate glass (DD-G-54 lb, ASTM E-438, USP specifications for Type I borosilicate glass).