Karter Scientific 211Z3 Standard Microscope Cover Slip， #1 Thick， 22x22mm (Pack of 200)<img src="http://ecx.images-amazon.com/images/I/41h2P2aiJlL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/318L2UsHeyL.jpg" noproxy>