Whirl-Pak® 可直立取樣袋使樣品采集處理和測試更加容易，因為采樣袋本身可以直立，它能保證用戶可以順利進行一些需要用到雙手的重要實，。當樣本放在里面，底部特別的設計使袋子底部變平，袋子便直立了。它在使用中就像一個燒杯或瓶子，但它的價格比其更低，已做無菌消毒，不會破裂，而且存放的時候只占用一小部分空間。

白色標記帶使樣品更加容易識別，可以很方便的在這白色書寫帶上用一般圓珠筆，鉛筆或者記號筆標記下樣品的信息。

The Whirl-Pak® Stand-Up Bag makes sample handling and testing much easier because it gives users the ability to perform important laboratory functions with both hands, because the bag will stand compley by itself. No rack or other holder is needed to keep the bag upright. When the sample is placed inside, the special gusseted bottom flattens out, allowing the bag to stand up on its own. It works just like a beaker or bottle, however, it costs less, is sterilized, won’t break, and uses only a fraction of storage space as the other containers.

The white, write-on strip makes sample identification easier and more convenient. It’s easy to write on this white strip using an ordinary ballpoint pen, pencil, or felt-tip marker. The paper-like finish virtually eliminates ink smearing, and provides a surface that will accept a variety of writing instruments.

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.