Total Dissolved Solids (TDS)

Instrumental Kits

Range Method Kit Catalog No.
0-2000 ppm and 0-10 ppt I-1100



In industrial water systems, it is important to accurately measure and control the amount of dissolved solids present, as they can form deposits on the system components and decrease overall system efficiency. The National Secondary Drinking Water Standard for TDS is 500 mg/L.


Method of Operation


To operate the CHEMetrics Total Dissolved Solids (TDS) Meter (Cat. No. I-1100), switch unit on, remove the electrode cap, immerse the probe into the sample, making sure that the sensor is fully covered. Wait for the readings to stabilize (Automatic Temperature compensation corrects for temperature changes). Take measurement. To clean the probe, simply rinse it in tap water. Tester is factory calibrated. However, to ensure accuracy, calibrate the TDS meter on a regular basis.




Range: 0-2000 ppm and 0-10 ppt


Resolution: 10 ppm; 0.10 ppt


Accuracy: +1% full scale


Calibration type: Manual


Operating Temperature: 0 to 50°C (32 to 122°F)


Power and battery life: Four 1.5 V alkaline batteries (supplied). 100 hrs. continuous use (approx.)


Pocket-sized: 6.5" length x 1.5" diameter


Weight: 3.25 oz.(90 g)


Warranty: 1 year (electrode: 6 months)



Instruments are manufactured and guaranteed by Oakton Instruments, Inc.