Features:
C-100 versatility of portable TDS / EC / SALT / S.G / TEMP water quality tester.
Mainly used for testing TDS (ppm /), EC (uS / cm, mS / cm), SALT (%), S.G (seawater gravity) and TEMP (ºC / ºF)
The pen type is simple and portable. Put the meter into the solution, it can quickly and steadily respond to the reading, and has a calibration function to ensure high accuracy.
The density of seawater in different regions is generally 1.02-1.07, and the weight of the dissolved salts is different about 3.5% on average. It is recommended to control the proportion of salt in this range.
Seawater salinity is the ratio of the total dissolved solids to the weight of seawater in seawater, usually expressed in grams per kilogram of seawater.

Specifications:
Model: C-100 (with Backlight)/ C-100A (optional)
EC:
Range: 0 to 10000uS / cm 10.01-19.99mS 20.1-400mS / CM
Resolution: 1uS / cm; 0.1 ms / cm;
Accuracy: ± 2 ％ F.S
TDS:
Range: 0 to 1000ppm 1000ppm to 10000ppm 10.1 to 200.0ppt (auto out of range)
Resolution: 1ppm; 0.1 point
Accuracy: ± 2 ％ F.S
salinity:
Range: 0.00 to 25.00%
Resolution: 0.01%
Accuracy: 0.01-5.00% (± 0.1%) 5.10-25.00% (± 1%)
SG: specific gravity of seawater 1.000-1.222
calibration:
EC: Three-point calibration is optional (1413uS 12.88mS 111.8mS)
Temperature compensation: ATC
Operating environment:
0 to 80.0ºC (32.0-176F); <90%
TDS coefficient: 0.5
Temperature range: 0.1-80.0ºC 32.0-176ºF
Temperature accuracy: + 0.5ºC
Temperature resolution: 0.1ºC / ºF
Automatic shutdown: 5 minutes
Power: 3x1.5 LR44 (Not Included)
Screen size: 28 * 17mm
Size / weight: 159 * 34 * 16mm (6.31 * 1.3 * 0.6in) / 60g (2.1oz)
Display: support backlight
batt-ery: Low batt-ery indicator

Package List:
1 * Water Tester
1 * User Manual

Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.