Does anyone know if I can buy Inhibitor in bigger containers than 1 litre bottles ? 20 litres would be nice . I need enough for 3 accumulators plus boiler , rads etc . Total volume of system roughly 1,400 liters of water . I rang our local BSS and they didnt sell it . Years ago when I used to look after a Steam boiler it was bought in big drums , but it was probably not exactly the same stuff . Thanks Guys .