29-03-2018, 10:01 AM
After some research, I am using Fernox Alphi-11 which has (IMHO) many merits. Being cheap isn't one of them but its long life is a compensating factor. You do need to use it in a fairly high concentration (40%+) to obtain the anti-corrosion qualities, I believe.
Regards,
Stuart
Regards,
Stuart