APVMA Approved for use by commercial operators for control of bacteria and protozoa including Cryptosporidium spp, and biofilm in swimming pools.

C-5 Tablets are a blend of precursor chemicals which when added to the pool water then forms Chlorine Dioxide (ClO2)
Ideal for elimination of cryptosporidium and chloramines.
Little ‘down time’ of swimming pool as there is no need for chlorine reduction after use.

Use Chlorine Dioxide Test Strips to ensure chlorine dioxide levels are maintained during treatment.

The effectiveness of removal by filtration will depend on the efficiency of the filtration system (filter media/ filter bed depth, condition/ filtration rate etc.). Coagulation will assist in optimizing the filtration of Oocysts.

The efficiency of chlorine by itself is subject to debate around the world. The use of additional systems such as U.V and Ozone may greatly enhance the results.

Health Guidelines recommend Super Chlorination as a means if inactivation.
A CT value (Free chlorine (mg/L) x Time (minutes) ) of at least 15300 must be achieved in order to inactivate 99.9% of Oocysts. This equates to a Free Chlorine reading of 20mg/l for 12.75 hours or 10mg/L for 25.5 hours. (e.g. 12.75 x 20 x (60 minutes) = 15300. Following this chemical treatment and prior to re-opening the pool all filters should be backwashed to remove Oocysts and then the Chlorine residual should be reduced to normal levels by the addition of Sodium Thiosulphate.

An alternative method that is also recommended by Health Departments around the world is the use of Chlorine Dioxide. This may be used as both a preventative and an in-activator of existing Oocysts. It is generally accepted that a CT value of just 70 (using Chlorine Dioxide) will result in the inactivation of 99.9% of Oocysts. C-5 Tablets is a Chlorine Dioxide precursor which when activated will form Chlorine Dioxide in the pool water.

100 g/kg Chlorine Dioxide present 200g/kg Sodium Chlorite

Dose Rates
Application rate C-5 to achieve CLO2 (ppm)
ppm 10,000 ltrs 50,000 ltrs 500,000 ltrs 1,000,000 ltrs
0.4 N/A 2 Tablets 20 Tablets 40 Tablets
1.0 1 Tablet 5 Tablets 50 Tablets 100 Tablets

Chemicals