The SM-1 Single Inline TDS Meter from HM Digital measures the TDS of a single water line. This is a great tool to monitor the TDS of your reverse osmosis system. Common monitoring locations include pre-system, post membrane or post DI stage. This unit features a digital display and comes with a 1/4" GA Murdock Quick Connect Tee with double o-rings to ensure a proper seal. As with all HM-Digital products, the SM-1 comes factory calibrated.
| SKU | 200032 |
|---|---|
| UPC | 891144000090 |
| Aquarium Type | Saltwater, Freshwater |
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Product Questions
What kind of battery does it use?
Question by: Leo Huang on Nov 6, 2026, 2:23 PM
LR44 battery
Answer by: Brandon A on Nov 6, 2026, 3:33 PM
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