The filter layer separates the liquid and solids, allowing for easy pipeting of the sample. The hole diameter in the filter layer measures 0.013 inches (0.33mm), with 1,840 holes per square inch (6.45 cm). The filter is sealed into the perimeter of the bag on the sides and bottom, allowing the sample to be placed into the bag on either side. The liquid will transfer through the filter, but the solids stay on one side. 

Volume, oz (ml)	Dimensions, W x L	Thickness, mil	Part Number, Pack/250
7 (210)	3¾ x 7”	3.0	B01385WA
24 (720)	6 x 9”	4.0	B01348WA
55 (1650)	7½ x 12”	4.0	B01318WA
69 (2070)	7½ x 15”	4.0	B01416WA