
SpectraPure
In stock
HM Digital DM-1 Inline Dual Probe TDS Meter -MTR-TDS-DM1
SKU 38-0024$24.99
Or 4 interest-free payments — see options at checkout.
- Founded 1985
- Built in Tempe AZ
- In-house membranes
- Lifetime support
HM Digital DM-1 inline dual-probe TDS meter. Measures feed-side and product-side TDS at the same time — the easiest way to spot a tired membrane or DI cartridge before it lets bad water through.
Features
- Dual-probe — IN and OUT side readings in one display
- Calculates rejection percentage automatically (if applicable model)
- Inline install — no test strips, no cup samples
Specs
- Range: 0–9990 ppm
- Accuracy: ±2%
- Power: battery
- Includes: meter, two probes, fittings
Related products
- Deluxe version: HM Digital DM-2 Deluxe
- 3-probe version: HM Digital TRM-1
Questions about filters, production rates, or membranes? Visit our Know Your Filters page or contact us.