Whirl-Pak's Write On Sterilized Bag is a best-seller in all industry sectors. With built-in secure closure tabs, our write-on bags are ideal for the shipping and storage of all forms of sample material. Whirl-Pak® Write On Sterilized Sampling Bags provide a secure, contaminant free flexible container that ensures dependable analysis results. You can count on Whirl-Pak® products as a proven, economical and efficient way to collect, store and transport samples. Why do users prefer Whirl-Pak Write On bags? Whirl-Pak's Write On Sterilized Bag is a best-seller in all industry sectors. With built-in secure closure tabs, our write-on bags are ideal for the shipping and storage of all forms of sample material. Whirl-Pak® Write On Sterilized Sampling Bags provide a secure, contaminant free flexible container that ensures dependable analysis results. You can count on Whirl-Pak® products as a proven, economical and efficient way to collect, store and transport samples. Why do users prefer Whirl-Pak Write On bags?