LabExact 1200004 MCE Membrane Flats， Sterile， Gridded， Hydrophilic， 0.45um， 47mm (Pack of 200)<img src="http://ecx.images-amazon.com/images/I/41vA6-l%2BASL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51h6UAUZ57L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41e%2BwXyr2zL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41vAG9sot9L.jpg" noproxy>