美国Nasco 69盎司可过滤Whirl-Pak均质袋，容积：69 oz./2041 ml，尺寸：19 cm x 38 cm，膜厚：0.102 mm，包装规格：Box of 250
样品均质在微生物检测中是常用的一个步骤。Whirl-Pak 均质袋提供了从采样到均质的方便选择。加厚的结构确保可耐受均质机拍击。采用圆底密封，样品更容易更彻底取出。
采样袋采用三层高性能聚丙烯材料，带有匀质过滤网。 匀质过滤网采用高性能聚丙烯材料，滤网孔径为0.33 mm,孔密度为285个/平方厘米。匀质袋采用周边密封，能让样品到达各处，液态物质间流出，固态物资将保存在滤网中。
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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其他信息：
请勿在高于180℉（82℃）的温度下使用袋子
Whirl-Pak袋子可以冷冻到任何温度，甚至液氮温度低至-346℉（-210℃），冷冻后需要小心处理
当袋子关闭并折叠标签三次时测量体积/容量（体积和尺寸约为±5%）
灭jun日期的保质期可在无菌文件中找到：自无菌确认书上的灭jun日期起5年
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