What water quality do I need for glass cleaning?

In our experience, you need water quality below 15 PPM to clean windows with pure water. Whether the water comes from a mixed bed resin or an osmosis system is not formally decisive for the cleaning effect and does not influence the cleaning result as long as the amount of water is sufficient and you do everything technically correctly. Whether the value is 0, 3 or 14 PPM is generally not particularly relevant. Osmosis systems deliver stable values that are rarely 0 PPM, but rather 2-8 PPM. Mixed bed resins deliver 0 PPM for quite some time after the resin change until the conductivity increases. By the way: In our experience, values of up to 30 PPM are sufficient for solar cleaning, as the surfaces are not transparent. However, higher conductance values are absolutely not recommended here simply because of the potential for better resoiling. So if you are working with a resin system, the resin can be changed later for solar cleaning than for glass cleaning!

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Osmosis systems, mixed bed resins and co.