Clasman Posted June 21, 2019 Share Posted June 21, 2019 Apologies if this is a common question i live in UK soft water area but I also have my own ro unit for aquatics , Been doing a weekly wash with ONR my routine is 15 litres of ro water and I add 55 to 60 ml of onr , this gives me enough for a good prespray same mix and wash with big red sponge , so far in the 2 months since first using I am extremely impressed , don’t see any issues or sign of smearing , am I doing anything wrong using ro or my dilution thank you Quote Link to comment Share on other sites More sharing options...
Ron@Optimum Posted June 21, 2019 Share Posted June 21, 2019 welcome to Optimum - I'll let one of our international posters respond to your ratio, beyond my feeble mind to convert to US metrics (and I don't know what ro is...). Quote Link to comment Share on other sites More sharing options...
Detail Mutant Posted June 21, 2019 Share Posted June 21, 2019 Clasman, Standard recommended wash solution dilution ratio is 256:1 which you are effectively at (58.6 ml to 15 L to be precise). Since you are using Reverse Osmosis water there should be no contaminants and I would stick with this dilution ratio . In my case, I live in a region with moderately hard water (260 ppm), so I will typically use a slightly higher dilution ratio (around 225:1) to compensate for the ONR attacking the minerals within the water. For your pre-spray solution, you may want to consider a higher dilution ratio depending on how you use it (apply and rinse with clean water before using BRS) and level of dirt/contaminants on the vehicle. In the past, I have used as high as 64:1 dilution ratio especially in winter when there is excessive salt build up on the panels. But if the current 256:1 dilution ratio works for your conditions, I would stick with it. Quote Link to comment Share on other sites More sharing options...
Ron@Optimum Posted June 22, 2019 Share Posted June 22, 2019 and now I know what ro is... No Soap 1 Quote Link to comment Share on other sites More sharing options...
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