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Whirl-Pak® Bags | Whirl Pak Bags

"Puncture-Proof Tabs"
All Whirl-Pak® bags feature "PUNCTURE-PROOF TABS." This patented process extends the tape on the tab past the aluminum wire ends eliminating the sharp points which could puncture the bags, scratch a person's hands, or puncture gloves. This important product feature is found only on Whirl-Pak®, making it easier and safer to use than any other laboratory sample bag! The "PUNCTURE-PROOF TABS" process is patented under No. 5,180,229.
Guaranteed Sterile
• Only Whirl-Pak® bags carry this important feature. +1 Sterilization is the process of sterilizing sealed cartons of Whirl-Pak® bags after manufacturing using ethylene oxide gas at an independent ISO-certified facility. This process saves valuable preparation time and eliminates concern about sample integrity. To ensure the bags are sterile, a Parametric Release Process is used to confirm that all processing parameters are met and maintained throughout the sterilization cycle. The bags are shipped free from human contact in a secure liner bag inside the sealed carton. Lot numbers on every carton provide traceability of official sterility documentation, which is available at whirl-pak.com or from Nasco.
Whirl-Pak® bags are not autoclavable.
Look for the Whirl-Pak® Name. Each and every bag is clearly marked with "Whirl-Pak®" on the bag. If it doesn't say Whirl-Pak®, it's not our patented sterilized bag.
If You Have to Go to Court — For your peace of mind, (as well as following good laboratory practices), should you be challenged in court, always use Whirl-Pak® bags.

Reduced Storage Space
• Whirl-Pak® bags save 90% more space than other types of containers
• Valuable space savings in the lab, vehicle, warehouse, etc.
• Significant savings on shipping costs
• Easy disposal after use
Easy Identification
• A felt-tip marker can be used to write on the plain bags
• Regular pens or pencils can be used on the special write-on surface
• Positive ID eliminates confusion and mistakes during testing and analysis procedures
Leakproof Closure
By whirling or tightly folding the tab over three times, the Whirl-Pak® bag becomes a leakproof container, which:
• Eliminates the loss of a valuable sample
• Prevents impurities from entering the bag and contaminating the sample


Click on a Product to view details.

Whirl-Pak Stand-Up Bags

Whirl-Pak® +1 Sterilization® Stand-Up Bags

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  • Whirl Pak guaranteed
  • Gusseted flat bottom ensures stability
  • Wire tabs hold top open for easy access
  • Hands free for adding or removing samples
  • Convenient write-on strip for easy identification
  • Works just like a beaker - but costs less, is sterilized, takes up less storage space and won't break
We carry the full line of Whirl-Pak products.
Call for information on products not listed.
Whirl-Pak (Grouping 1)

Whirl-Pak® +1 Sterilization® Sampling Bags

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  • Whirl-Pak +1 Sterilization® guaranteed
  • Puncture proof tabs for safer handling
  • Exceptionally clear film easy to see through
  • Superior strength - unbreakable sample container
  • Leak proof closure prevents impurities from entering bag
  • Reduced storage space - save 90% more space than other containers
We carry the full line of Whirl-Pak products.
Call for information on products not listed.
Whirl-Pak Thio Bags

Whirl-Pak® +1 Sterilization® Water Sampling

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  • Whirl Pak +1 Sterilization® guaranteed
  • Puncture proof tabs for safer handling
  • Exceptionally clear film for easy identification
  • Leak proof closure prevents impurities from entering bag
  • Reduced storage as whirl-paks use only 10% or less space of other containers
We carry the full line of Whirl-Pak products.
Call for information on products not listed.
Whirl-Pak Show Filter

Whirl-Pak® +1 Sterilization® Filter Bags

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All the bags use the same filter material. 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. This allows 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.

We carry the full line of Whirl-Pak products.
Call for information on products not listed.
Whirl-Pak Scoop-Bags

Whirl-Pak® +1 Sterilization® Specialty Bags

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  • Whirl Pak +1 Sterilization® guaranteed
  • Puncture proof tabs for safer handling
  • Exceptionally clear film for easy identification
  • Leak proof closure prevents impurities from entering bag
  • Reduced storage as whirl-paks use only 10% or less space of other containers
We carry the full line of Whirl-Pak products.
Call for information on products not listed.
Tewes Corporation | Packaging and Supplies