Check the listing for details. Celestron Professional Grade Microscope Slides 72 pcs Celestron #44416 NOS New. Condition: New. Listed at 29.99 USD. Celestron Blank Microscope Slides (72 pcs) - Celestron #44416 - for sale. Professional grade glass blank slides and cover slips. Our square glass microscope cover slips are manufactured from high quality white glass sheets. The slides are flat and optically clear. These are standard 18 x 18mm cover slips. They range from 0.13 - 0.17mm thick. The slides packed in a two-part plastic boxes of 100 cover slips and are wrapped in moisture-resistant paper to prevent contamination. These professional grade glass blank slides and glass cover slips are brand new and newly manufactured. FEATURES Box of 72 blank slides25.4 mm x 76.2 mm x 1.0 to 1.2 mm thickness (1" x 3" x 0.043")Premium quality glassPrecision ground and polished with smooth edges18 x 18mm standard glass microscope cover slipsFactory sealed boxes of 100 cover slips eachClear white glass