Cover Slip, Round, 15mm Dia, German Glass, #1 Thickness, 1oz Pkg. Cover slips are manufactured from the highest quality borosilicate hydrolytic class 1 German glass. They have excellent resistance to chemicals and are ideal for neural tissue culture and hard-to-attach cells. These cover slips are exceptional for florescence and confocal microscopy. Sold in packages of 1oz.Please Note:15mm Diameter will fit in a 12 well plate; CLS-3500-012Approximate Quantities per Case:CLS-1760-015: 378