Steadichlor tablets offer a simple and effective means of water chlorination without the need for complex dosing equipment. Steadichlor tablets dissolve in water to give a slow steady chlorine release. The dissolving time is approximately 4 hours in flowing water or 12-24 hours in static water.

Steadichlor tablets are prepared from calcium hypochlorite. In use, the tablets do not contribute any substances not normally present in treated mains water. Steadichlor tablets are available in two sizes - Steadichlor and Steadichlor-NS. Use the size appropriate to the volume of water to be treated.

Chlorination of Water

Steadichlor tablets offer an ideal means of chlorinating water in tanks, wells or small reservoirs: and waste water in tanks or effluent streams. The tablets should be used in accordance with standard chlorination practice depending on the water to be treated and the purpose of treatment.

Where chlorination is to be carried out to disinfect the water, a free chlorine residual of at least 1 mg/l should be achieved in the treated water. Note that it will normally be necessary to add a higher chlorine dose to satisfy the chlorine demand of the water.

The dosage of Steadichlor tablets should therefore be controlled in response to free chlorine test readings taken on the treated water. Testing should be carried out using Palintest DPD No. 1 tablets and a chlorine test kit. Details of the Palintest DPD test and full range of test kits available are given in literature available on request.

Disinfection of Water Mains and Tanks

The Steadichlor system is established as one of the simplest means of disinfecting new or repaired water mains and tanks. A feature of the Steadichlor system is the unique Palintest Chlorocol test, especially developed for the control of mains disinfection procedures.

The chlorine dose recommended by the Manual of British Water Engineering Practice (Fourth Edition) for the disinfection of new and repaired mains and their branches is 20 mg/l with a contact period of at least 30 minutes. A similar dose would be appropriate for the disinfection of water tanks and waterworks apparatus.

Use biocides safely. Always read the label and product information before use.