Microscope Slide Product Type Microscope Slide Material Green Glass Overall Length 75 mm Overall Width 25 mm Thickness 1.1 mm Edge Type Ground Number of Slides 72 Includes Not Applicable Color Clear/White Refractive Index 1.52 Coefficient of Thermal Expansion 90 x 10-7/ Degrees C (30 Degrees C to 300 Degrees C) Elastic Modulus Greater Than 7 x 104 Mpa Maximum Operating Temperature - Centigrade 350 Degrees C Minimum Operating Temperature - Centigrade 20 Degrees C