copperglobe
Active member
What is the maximum TDS levels that are still considered "spot free" in the industry?
Maximum TDS of spot free?
- Thread starter copperglobe
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Rick Lancelle
Washworld Tech Support
Generally when you start approaching a TDS of 40 and above, spotting can potentially be an issue.
MEP001
Well-known member
I've had RO equipment manufacturers tell me that up to 50 TDS is ok for good quality spot-free, but from my experience you'll start seeing spots at 30 and above. It's more noticeable in self-serve than from an auto or tunnel with a dryer.
cleaning up mud
Member
I have been told in needs to be below 10! ???
washnvac
Well-known member
I have had spots at 15-17. I keep everything adjusted to have it at 4 or below.
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I.B. Washincars
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Keep in mind that you are mixing that RO water with the water already on the car, with TDS probably in the hundreds. 30 TDS water may very well be spot free if you sprayed it on a dry car. I have no science to back this up...just sayin.
Washmee
Fullservice Tunnel
The key to getting a truly spot free car is making sure you displace all the wash water.