"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
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.