Manufactured from clear white glass, our cover slips are exceptionally clean, perfectly flat and do not stick together. All cover slips are uniform in size and thickness. Cover slips are packaged vertically for easy handling, ideal for manual or automated cover slipping applications. Cover slips come packaged in sturdy re-sealable plastic cases containing 200 pieces each, 1000 pieces per case. Epic Scientific offers eight different sizes to suit your specific needs. Call for a sample.