As Whirl-Pak® migrates our online presence from eNasco.com to a focused experience on Whirl-Pak.com, we would like to keep you informed and comfortable. We understand there will be questions and concerns throughout the transition. We’ve procured a list of questions we anticipate from our valued customers. If you still have questions, our knowledgeable team is happy to help.
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Frequently Asked Questions (FAQs)
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Blended, virgin polyethylene.
With ethylenee oxide as, documentation of sterility is available for every box. Enter your lot number here to download your sterility documentation.
The tape and wire at the top of a closure bag is called the tab; the wire ends of the tab are covered with tape, by a patented process, which eliminates the sharp points and minimizes bag puncture, damage to gloves, and scratching the hands of field technicians collecting the samples, and the techs in the lab.
Through innovation and quality testing, Nasco Sampling discovered that sealing two flat pieces of film together with a continuous seal virtually eliminated corner leaks in the bag. Because the seal is all on one plane and does not fold, which happens when sealing tube film, the seal is stronger and less prone to leakage.
Our sterilized bags have a five-year shelf life and our hydrated sponge bags have a two-year shelf life. For product specific information, please visit product in question by browsing the website.
Because the bags are packaged in a liner bag in the box, sterility is protected during shipping and handling. When the bags are used, the liner is opened, bags(s) removed, opened, sample placed inside, and bag is closed. Also because the perforation is so small, it is an accepted laboratory procatice to have bags out of the carton without affecting sterility.
The sodium thiosulfate tablet neutralizes chlorine in the water sample, allowing bacteria to show up during testing. The 40 mg tablet contains 10 mg of active sodium thiosulfate. The shelf life of the tablet in the bag is five-years, however if the tablet is broken or crumbled due to excessive humidty, the bag should not be used. Thio-Bags® should be stored in ambient conditions to minimize moisture permeating through the bag.
Several styles are designed specifically for use in homogenizer blenders. Bags made of the thicker film including Standard bags, Write-On bags, and Filter bags.
Yes, all Whirl-Pak® bags are approved for food contact.
Whirl-Pak® bags are manufactured under a quality management system certified to ISO 9001.
The bags are packaged in a closed liner bag, so the sterility is not compromised during shipping. Second,because the perforation is so small, it is difficult for contamination to occur.
With the ability to stand up by itself, the bag can be placed on a surface without the need for rack or other device to keep it upright. The technician has both hands free to work with the sample, providing greater efficiency and savings of time and money. The possibility of losing the sample due to spilling, or contamination occuring, is greatly reduced. Collecting samples in the field is much easier to do, because the bag can be set down almost anywhere once it is filled with the sample. Almost any sample collection done with jars, can now be done with the Whirl-Pak® Stand Up bags.
The process involves putting the organism into the bag, then submerging it in water and then subjecting them to the shockwaves. Our only concern is that is there is a pressure applied to the bag, it may be forced open. Submersing it in water is no problem; people do this all the time with our bags. We are not familiar with shock waves and how they would impact the bag. Any of the 4-mil bags would have the thickest film; the perimeter seal would be equal on all of them. We can send samples to try.