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HM Digital TRM-1 Inline 3 Probe TDS Meter with 0.25" Quick-Connect Fittings - Spectrapure

SpectraPure, Inc.

4.5 (123)

HM Digital TRM-1 Inline 3 Probe TDS Meter with 0.25" Quick-Connect Fittings -MTR-TDS-TRM1-4

Name: SpectraPure, Inc. HM Digital TRM-1 Inline 3 Probe TDS Meter with 0.25" Quick-Connect Fittings -MTR-TDS-TRM1-4 - HM Digital TRM-1 Inline 3 Probe TDS Meter with 0.25" Quick-Connect Fittings -MTR-TDS-TRM1-4
Brand: SpectraPure, Inc.
SKU: 31968537509987
Price: 44.99 USD
Availability: InStock
Rating: 5 (2 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$44.99

Quantity

Color

Black

Quantity

Description

HM Digital TRM-1 inline 3-probe TDS meter. Adds a third probe so you can watch feed, post-membrane, and post-DI all at once — the right tool for full RO-DI builds where you want to spot whether the membrane or the DI is the next thing to ch...

Reviews

5.0

2 ratings

TDS Meter

Three line probes are better than two.

Gary · April 3, 2026

I tried everything to make my old one work, no such luck. This is a must have for anyone who monitors water for their saltwater tanks or for drinking water. OUTSTANDING product and a definite MUST HAVE. Great price and fast delivery. 10++

Gary · January 15, 2024