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Whirl-Pak® Bags General Information

Whirl-Pak® sterilized sampling bags are ideal for food & beverage, dairy, water, medical, veterinary, environmental, soil, and industrial markets as well as surface, forensic science, genetics, biomedical, and pharmaceutical sampling. Whirl-PakŪ bags have been the professionals’ trusted sampling bag for 60 years and offer puncture-proof closure tabs, guaranteed sterility, easy identification, and a leak-proof closure you can rely on.

Puncture-Proof Closure Tabs

Puncture-Proof Closure Tabs

Eliminate sharp points which could puncture the bags, scratch a person?s hands, or puncture gloves. The “PUNCTURE-PROOF TABS” process is patented under No. 5,180,229.

Guaranteed Sterile

Guaranteed Sterile

+1 Sterilization® – process of sterilizing sealed cartons of Whirl-Pak® bags after manufacturing, which is completed at an independent ISO-certified facility.

Sterility Traceability

Sterility Traceability

Download sterility certificates from using the lot number and master number on every box.



Exceptionally clear film and superior strength by using co-extrusion low-density and linear low-density, virgin polyethylene.

Leak-Proof Closure

Leak-Proof Closure

Whirling or folding the bag over three times and securing with the closure tabs creates a leak-proof sampling container.

Reduced Storage and Shipping

Reduced Storage and Shipping

Whirl-Pak® bags can save you $$$ as they require less space vs. other sampling containers, which saves on shipping, storage, and waste costs.

How Does Whirl-Pak® Work?

Step 1

STEP 1: Label your sample if using a write-on bag.

Step 2

STEP 2: To open, tear off the top along the perforation.

Step 3

STEP 3: Use the Tyvek® pull tabs to open without contamination.

Step 4

STEP 4: Place sample in bag. Perfect for liquids or solids.

Step 5A

STEP 5A: Hold bag by the tabs and whirl 3 to 4 times to make a seal.

Step 5B

STEP 5B: Or, fold the tab over tightly 3 to 4 times to close.

Step 6A

STEP 6A: Secure closure, bend wire ends.

Step 6B

STEP 6B: Or, bring the two wire ends together and twist tie them.

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