KLAudio returns - new KD-CLN-LP200T RCM

[stevek]

I saw in previous posts Neil says to replace water when it’s at 5-10ppm if it started at less than 1ppm. I’m at the end of my bulk cleaning so only need to do whatever I buy now. Even with replacing at 3-3.5ppm I can do a lot of records and it’s spread over a longer time. Feels right to replace it before it sits in the tank too long. I guess you notice no difference with tap or distilled? I wonder if the inside of your machine is going to look like an old shower head at some point?

I think Neil's recommendation was about the *increase* in TDS from the starting point as a way of estimating how much the water in the reservoir has degraded. It didn't necessarily refer to what level of TDS in fresh water was acceptable.

Remember that TDS is a very incomplete measure of water quality so there can be a lot of stuff from previous cleaning cycles in the water that's being spread over all your records (bacteria, fungi, some metals, pharmaceuticals, pesticides, "forever chemicals", etc.).

Here's an interesting sanity check: Would you rather drink (or bathe or wash your dishes in) the water from your reservoir that's been sitting around and used to clean a number of dirty records or would you prefer 30 ppm tap water?

 

[stevek]

A relevant quote from Neil earlier in the thread that agrees with the Table VII interpretation I gave above: "The probability/threshold for when this hard-scale residue can become audible (ticks) increases quickly above 50-ppm depending on how much high-TDS water is allowed to dry on the record and how uniform the residue when it dries." So it seems that it's much less of an issue below 50 ppm and that it's only an issue if a sufficient amount is allowed to dry on the record. That wouldn't include any water that's physically blown off the record by an air dryer but only the amount that evaporates and leaves residue behind.