Microscope Slide Product Type Microscope Slide Material Glass Overall Length 75 mm Overall Width 25 mm Thickness 1 mm Edge Type Beveled Number of Slides 144 Includes Not Applicable Color Clear Refractive Index 1.52 Coefficient of Thermal Expansion 90 x 10-7/ Degrees C (20 Degrees C to 350 Degrees C) Maximum Operating Temperature - Centigrade 350 Degrees C Minimum Operating Temperature - Centigrade 20 Degrees C Autoclavable No Standards Not Applicable Package Quantity 144