Test Kits
DM-1: In-Line Dual TDS Monitor
$30.99
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Product details
Product details
DM-1: In-Line Dual TDS Monitor is a compact in-line meter that displays Total Dissolved Solids (TDS) for both the feed water (in) and the filtered/product water (out). In practical aquarium/RO-DI workflows, it helps you quickly check whether your RO/DI system is producing cleaner water by comparing the two readings at the point of use. The unit uses in & out electrode probes and a built-in display to show the TDS level within its measurement range, making it useful for monitoring water quality consistency over time.
Features:
- Shows TDS for feed water and product water using in & out electrode probes
- Dual display capability supports quick comparison of “in” versus “out” readings
- Uses advanced microprocessor technology for highly efficient and accurate results
- Auto-Off function shuts the meter off after 10 minutes of non-use to conserve battery power
- Factory calibrated with a 342 ppm NaCl solution and can be recalibrated
- Dual range measurement up to 9990 ppm with resolution indicated by an “x10” blink
Specifications:
- Measurement range: 0–9990 ppm
- Resolution: 1 ppm for 0–999 ppm; 10 ppm for 1000–9990 ppm (shown with blinking “x10” indicator)
- Accuracy: ±2%
- Calibration solution and conversion factor: NaCl conversion factor (avg. 0.5)
- Cable length: 24.5 in (including sensor)
- Fittings: 1/4" standard (also available with 3/8" or 1/2")
- Quick connection type: Mur-lok® Quick-Connect T-fittings
- Power: 2 x 1.5V button cell batteries (LR44 or equivalent; included)
- Battery life: Approx. 1000 hours of continuous use
- Auto-Off: Shuts off automatically after 10 minutes of non-use
- Size: 7.6 x 2 x 4.7 cm (3 x 0.8 x 1.9 in.)
- Weight: 79.4 g (2.8 oz.)





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