Whirl-Pak® Thio-Bags®

Designed for sampling chlorinated water, the Whirl-Pak Thio-Bag is economical and convenient to use. Each bag contains a 25mg tablet of active sodium thiosulphate which will neutralise chlorine in the water sample at the time of collection. Record the sample identification with ease using any pen, pencil or felt-tip marker on the convenient ‘Write-On Strip’.   


  • Easy closing twist
  • Trusted puncture-proof closure tabs with new wide flat wire for a tighter seal
  • Write-on strip makes sample ID clear and keeps samples organised and traceable
  • Sodium thiosulphate tablet included for chlorine neutralisation
  • Less expensive to ship
  • Takes up less storage space
  • Easily transportable

Capacity is measured in fluid ounces when the bag is closed, and tab is folded over three times. Volume and dimensions are approximate. The bags should not ne used at temperature above 82°C and can be frozen to any temperature. 

For product details and codes, view the Whirl-Pak Product Guide.