Important facts to know
Product comes WITHOUT the 'usual' foil / plastic seal under screw cap. Appears as a colourless / odourless (?) liquid. Reason given is to allow the liquid to 'breathe'. Cap is not child proof. I had a full 1 litre container, but I forgot whether it had been used and refilled with 'water' for some reason and avoided using it. Bought more for the Underfloor Heating System (UFH) unneccessarily as it looks the same. Suggest you label it appropriately and tape over the cap as fit for future use. It makes a big difference to how much mould growth appears in the UFH System.
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