美國(guó)進(jìn)口，NASCO Whirl-Pak均質(zhì)過濾取樣袋有一層精細(xì)帶孔的聚乙烯薄膜，可過濾掉混合樣品中的固體從而實(shí)現(xiàn)潔凈移液。濾網(wǎng)層的孔徑為0.33毫米（0.013英寸），即330微米，每平方厘米有285個(gè)（每平方英寸1840個(gè)）。Whirl-Pak均質(zhì)過濾取樣袋內(nèi)的濾網(wǎng)層固定在側(cè)面和底部周邊，使樣品可以放置在袋子的兩側(cè)，混合樣品中的液體將通過濾網(wǎng)流到下界，使樣品可以放在袋子中的另一邊?？蓸?biāo)記。

具體規(guī)格型號(hào)如下：

Contains filter layer.

24 oz. (710 ml) capacity

6 in. W x 9 in. L (15 x 23 cm)

4.0 mil (.102 mm) thick

Box of 250

These special bags contain a third middle 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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