Quote:
Originally Posted by littlesilvermax
Do you have a dual TDS meter?
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Yes, which gives two readings on each meter by way of a toggle switch. First meter reads tapwater TDS in and TDS post RO membrane stage (stage 3). Second meter reads TDS after first DI cartridge (stage 4) and finally TDS reading of final product. So, 4 TDS readings all tolled.
Cheers,