Battery Included : No
High-concerned chemical : None
With Backlight Or Not : No
Display Type : DIGITAL
Origin : Mainland China
HMSM1 : Single TDS detector
HMTRM1 : Three channel TDS detector
Range : 0-9990 ppm
Accuracy : ±2%
Digital Online TDS Meter LCD Display Salinity Dissolved Oxygen Total Hardness Water Quality Purity Tester for School Laboratory
FEATURES：
Displays TDS level of a single water line or three water lines.（optional）
Highly efficient and accurate due to its advanced microprocessor technology.
Auto-Off function conserves battery power. The unit shuts off automatically after 10 minutes of non-use.
Wide Range 0-9990 ppm (From 0 - 999 ppm the resolution is 1 ppm. From 1000 to 9990 ppm, the resolution is 10 ppm, indicated by a blinking 'x10' image.)
Factory Calibrated:our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver.
Comes equipped with Mur-lok ® Quick-Connect T-fitting (1/4 inch standard, also available in 3/8" or 1/2" ).
Installs quickly and easily.
SPECIFICATIONS：
Range: 0-9990 ppm
Accuracy: ±2%
Conversion Factor: NaCl (avg. 0.5)
Cable Length: 24.5″ (including sensor)
Fittings: 1/4″ standard, also available with 3/8″ or 1/2″
Power source: 2 x 1.5V button cell batteries (LR44 or equivalent; included)
Battery life: approx. 1000 hours of continuous 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.)
SM-1（Single way TDS detector）
TRM-1（Three ways TDS detector）
