Made by Fi-Chlor
Active Oxygen system
1 Litre Liquid
Hot tub chemicals by Fi-Chlor, these tablets are the highest quality available to the UK.
This is part B the liquid activator only.
If you want a simple alternative to Chlorine and Bromine based sanitisers then why not try Active Oxygen, this is a simple to use product that works by putting in a Activator Liquid and active oxygen tablet (sold separately) or 2 into a dispenser in your before you get in the water.
Weekly and before usage.