Cat. H-18-1.5-Collagen: 18 mm diameter, # 1.5 thickness, 45 pieces of CE certified crystal clear German glass coverslips with rat tail type I collagen coating on both sides for cell culture and confocal fluorescence microscopy, sealed 15 pieces per bag x 3 = 45, sterilized, ready to use. This H-18-1.5-collagen is half packing size of GG-18-1.5-collagen. Similar collagen coated coverslips: H-18-collagen, GG-18-collagen.