Drinking Water Disinfectant Hadex

Order by can size and number of cans. Work the quantity out from the water you expect to treat: the maker gives three standard dosages. These are 1 litre to 50,000 litres for clear water of normal quality, 1 litre to 25,000 litres for water of inferior or doubtful quality, and 1 litre to 5,000 litres as a shock treatment. The shock dose is for epidemic conditions, suspected contamination, and the first disinfection of tanks and pipelines after repairs or renewals.^[1]

If the ship doses automatically, say so: the maker supplies flow-proportional dosing units, and its standard packing is designed to be used as the dosing container. Order a test kit for active Hadex in the water with the first supply if none is on board.^[1]

Buy for use within the shelf life. The maker gives at least eighteen months at 25 °C and at least three years stored cool, at about 6 °C. The SDS asks for storage in a well-ventilated, cool place.^[1][2]

The SDS classifies Hadex as a skin irritant (H315), as causing serious eye damage (H318) and as very toxic to aquatic life with long-lasting effects (H410), with the signal word "danger". For transport it is UN 3082, class 9. Handle it with eye protection and keep the SDS with the stores.^[2]

Flag administrations set the drinking-water standard and testing regime. The Portuguese administration is one example: drinking water meeting the WHO Guide to Ship Sanitation satisfies its circular. Water stored in tanks must be tested at least yearly, at the final dispensing point. If the ship tests its own water, a kit covering chlorine and pH among other parameters must be used every six months, and records are kept for port state and flag inspectors.^[3]

Under the same circular, if results fall outside the WHO guide, use of the water is suspended. The affected tanks and delivery lines are then drained, cleaned and sterilised before refilling and retesting. That is the case for the maker’s shock dose.^[3][1]