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Nasco

Located in Fort Atkinson, Wisconsin, Nasco is comprised of a central office, warehouse facilities, production facility (biological and educational kits), and plastics manufacturing plant.

Whirl-Pak Bags – developed almost 40 years ago, American made Whirl-Pak bags were the first sterile sample bags on the market. They were designed to provide milk haulers with a container for collecting samples of bulk produced milk. Whirl-Pak bags made possible the “universal sample system” which means that a single sample can be used for all tests required for quality control, product content and legal compliance. Whirl-Pak sample bags are made form blended virgin, low-density polyethylene, giving the bags two important characteristics:

Exceptionally clear film – easy to see through Superior strength – unbreakable sample container

They may be used for taking samples of liquids, semi-solids, or solids. Whirl-Pak bags are patented under Patent No. 2,973,131 and other patents pending. The film thickness varies from 2.25 mil (0.57mm) to 4 mil (.102mm) depending on the size and style. Because of the high quality blended polyethylene, a high mil thickness is not required to achieve optimum strength.