美國Nasco 69盎司可過濾Whirl-Pak均質袋，容積：69 oz./2041 ml，尺寸：19 cm x 38 cm，膜厚：0.102 mm，包裝規格：Box of 250

樣品均質在微生物檢測中是常用的一個步驟。Whirl-Pak 均質袋提供了從采樣到均質的方便選擇。加厚的結構確保可耐受均質機拍擊。采用圓底密封，樣品更容易更徹底取出。

采樣袋采用三層高性能聚丙烯材料，帶有勻質過濾網。 勻質過濾網采用高性能聚丙烯材料，濾網孔徑為0.33 mm,孔密度為285個/平方厘米。勻質袋采用周邊密封，能讓樣品到達各處，液態物質間流出，固態物資將保存在濾網中。

These special bags contain a third layer of finely perforated polyethylene, which filters out the solids in the sample when used in a homogenizer blender. Bags feature a filter layer of finely perforated polyethylene, to separate the liquid and solids, allowing for easy pipetting of the sample. The hole diameter in the filter layer measures .013 inches (.33 mm), 330 microns, and there are 1,840 holes per square inch, 285 per square cm. The filter is sealed into the perimeter of the bag on the sides and bottom, allowing the sample to be placed in the bag on either side. The liquid will transfer through the filter, but the solids stay on one side.

Capacity is measured in fluid ounces when the bag is closed and tab is folded over three times. Volume and dimensions are approximate; bags should not be used at temperatures above 180° F (82° C). Bags can be frozen to any temperature, even liquid nitrogen - careful handling required after freezing. All bags are sterilized after manufacturing.

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