Products Food Safety & Microbiology > Nasco Whirl-Pak Bags


ABOUT NASCO

Developed over 50 years ago and made in the U.S.A., Whirl-Pak® bags were the first sterile sample bags on the market. 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 a co-extrusion of low-density and linear low-density, virgin 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 mils (0.057 mm) to 4.0 mils (0.102 mm), depending on size and style. Because of the high-quality blended polyethylene, a high mil thickness is not required to achieve optimum strength.

About Whirl-Pak Bags:

  • Developed in 1959 and manufactured in the U.S.A. Whirl-Pak® Bags were the first sterilized laboratory sample collection bag on the market.
  • Whirl-Pak® Bags feature patented Puncture-Proof Tabs that eliminate sharp points which could puncture the bags, scratch a person’s hands, or tear gloves.
  • Whirl-Pak® Bags are sterilized after manufacturing using ethylene oxide gas at an independent ISO-certified facility.
  • Whirl-Pak® Bags are made from co-extrusion low-density and linear low-density, virgin polyethylene which creates the exceptionally clear film and superior strength associated with the brand.
  • Whirl-Pak® Bags have a leak-proof closure created by whirling or folding the tabs over three times, thus, eliminating the need for a separate lid.
  • Whirl-Pak® Bags reduce storage, labor, and shipping costs by 90%.

 


Standard Bags

PRODUCT OVERVIEW

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.

Standard Bags



Stand-Up Bags

PRODUCT OVERVIEW

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 completely 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 temperatures down to -346° F (-210° C) – careful handling required after freezing. All bags are sterilized after manufacturing.

Cat No. Bag Capacity Size Thickness Wire Packing
N02-B01364WA 14 oz. (118 ml) 3" W x 71/4" L (7.5 x 18.5 cm) 2.5 mils (0.64 mm) 2 Round 500 bags/box
N02-B01365WA 18 oz. (532 ml) 41/2" W x 9" L (11.5 x 23 cm) 3 mils (0.76 mm) 2 Round 500 bags/box
N02-B01401WA 24 oz. (710 ml) 6" W x 9" L (15 x 23 cm) 3 mils (0.76 mm) 2 Round 500 bags/box
N02-B01449WA 36 oz. (1065 ml) 5" W x 15" L (12.5 x 38 cm) 4 mils (0.102 mm) 1 Round, 1 Flat 250 bags/box
N02-B01450WA 42 oz. (1242 ml) 6" W x 15" L (15 x 38 cm) 4 mils (0.102 mm) 1 Round, 1 Flat 250 bags/box
N02-B01451WA 69 oz. (2041 ml) 71/2" W x 15" L (19 x 38 cm) 4 mils (0.102 mm) 1 Round, 1 Flat 250 bags/box


THIO-BAG  –  Water Sampling

PRODUCT OVERVIEW

The job of collecting water samples is easier with the Whirl-Pak® Stand-Up Thio-Bag®! A special gusset on the bottom of the bag flattens out when water is put in the bag, allowing it to stand up completely by itself. No rack or other holder is needed to keep the bag upright. Forget washing and sterilizing glass bottles and disposing of expensive vials. Sterile and unbreakable, these bags will save time and money whether working in the lab or in the field. Each bag contains 30 mg of active sodium thiosulfate to neutralize chlorine in the sample.

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, temperatures down to -346°F (-210°C) – careful handling required after freezing. All bags are sterilized after manufacturing.

Cat No.

Bag Capacity Size Thickness Packing
N02-B01040WA  100 ml 3" W x 71/4" L (7.5 x 18.5 cm) 2.25 mils (0.57 mm) 100 bags/box
N02-B01254WA  300 ml 41/2" W x 9" L (11.5 x 23 cm) 2.5 mils (0.64 mm) 100 bags/box
N02-B01402WA  100 ml 3" W x 71/4" L (7.5 x 18.5 cm) 2.5 mils (0.64 mm) 100 bags/box
N02-B01403WA  300 ml) 41/2" W x 9" L (11.5 x 23 cm) 3 mils (0.76 mm) 100 bags/box


SPECI-SPONGE  –  Surface Sampling

PRODUCT OVERVIEW

The Whirl-Pak® Speci-Sponge® bag is designed for environmental surface sampling of work areas, equipment, animal carcasses, and any other place where testing for Listeria, Salmonella, E.coli, coliforms, and other foodborne pathogens, or anthrax is required.

The special dry sponge is free of bactericides and has been tested to be non-inhibitory. It measures approximately 1-1/2″ x 3″ x 5/8″ (3.8 x 7.6 x 1.5 cm) thick when wet, and is sterilized inside a Whirl-Pak® bag. Wearing a sterile glove when wiping with the sponge is recommended to help prevent contamination. After the sample has been collected and the sponge returned to the bag, it can be sent to a lab for testing. In the lab, media may be added directly to the bag and the sample incubated inside the bag for a +/- test, or the sample may be squeezed out of the sponge, pipetted, and plated out.

Cat No. Bag Capacity Size Thickness Packing
N02-B01245WA 18 oz. (532 ml) 41/2" W x 9" L (11.5 x 23 cm) 2.5 mils (0.64 mm) 100 bags/box
N02-B01392WA 18 oz. (532 ml) 4" W x 9" L (11.5 x 23 cm) 2.5 mils (0.64 mm) 100 bags/box
N02-B01299WA 55 oz. (1627 ml) 71/2" W x 12" L (19 x 30 cm) 4 mils (0.102 mm) 100 bags/box
N02-B01422WA 18 oz. (532 ml) 41/2" W x 9" L (11.5 x 23 cm) 2.5 mils (0.64 mm) 100 bags/box