Total Dissolved Solids (TDS) Measurement Products
The total TDS is a mass estimate and is dependent on the mix of chemical species as well as the concentration while conductivity is only dependent on the concentration of chemical species. Some applications require the measurement of Total Dissolved Solids (TDS) in mg/L, parts per million (ppm) or parts per thousand (ppt). The TDS concentration can be obtained by multiplying the conductivity value with a factor which is empirically determined.
Eutech offers meters that allow the direct reading of TDS values. These include the TDSTestr series, EcoScan TDS 6, CyberScan Standard Portables CON 11, CON 110 and Waterproof Portable CON 410. Bench meters for advanced level laboratory research are the CyberScan CON 510, CON 1500 and colour touchscreen research-grade CON 6000.
Browse by product type:
Pocket-Sized Testers >> View Comparison Table
| Model | Meter Highlights | Parameter | Range | Memory |
|---|---|---|---|---|
 TDSTestr 11+ | Waterproof Pocket Tester Large Dual Display | TDS | .. to 100.0 ppm .. to 1000 ppm .. to 10.00 ppt (depending on TDS factor) | No |
 TDSTestr 11 | Waterproof Pocket Tester Large Dual Display | TDS | .. to 1000 ppm .. to 10.00 ppt | No |
 TDSTestr High | Waterproof Pocket Tester Single Display | TDS | .. to 10.00 ppt | No |
 TDSTestr Low | Waterproof Pocket Tester Single Display | TDS | .. to 1990 ppm | No |
 EcoTestr TDS High[ Upgrade Version Available ] | Waterproof Economy Pocket Tester Single Display | TDS | 0 to 10.00 ppt | No |
 EcoTestr TDS Low[ Upgrade Version Available ] | Waterproof Economy Pocket Tester Single Display | TDS | 0 to 1990 ppm | No |
Economy Handhelds >> View Comparison Table
| Model | Meter Highlights | Parameter | Range | Memory |
|---|---|---|---|---|
 Thermo Scientific Eutech TDS 6+[ NEW! ] | Economical TDS measurement | TDS/°C/°F | 0.00 - 9.99 ppm 10.0 - 99.9 ppm 100 - 999 ppm 1.00 - 9.99 ppt 10.0 - 99.9 ppt | No |
 Eutech TDS 6+ | Economical TDS measurement | TDS/°C | 0 to 9.99 ppm 10.0 to 99.9 ppm 100 to 999 ppm 1.00 to 9.99 ppt 10.0 to 99.9 ppt | No |
 EcoScan TDS 6 | Economical TDS measurement | TDS/°C | .. to 200 ppt | No |
Standard Handhelds >> View Comparison Table
| Model | Meter Highlights | Parameter | Range | Memory |
|---|---|---|---|---|
 CyberScan CON 11 | Standard Handheld | Conductivity/TDS/°C | .. to 200 ppt | 50 data sets |
 CyberScan CON 110 | Expanded memory, RS232 output | Conductivity/TDS/°C/°F | .. to 200 ppt | 100 data sets |
Waterproof Handheld >> View Comparison Table
| Model | Meter Highlights | Parameter | Range | Memory |
|---|---|---|---|---|
 CyberScan CON 410[ DISCONTINUED ] | Waterproof GLP | Conductivity/TDS/°C/°F | .. to 200 ppt | 50 data sets |
Bench Meters >> View Comparison Table
| Model | Meter Highlights | Parameter | Range | Memory |
|---|---|---|---|---|
 CyberScan CON 510 | Economical, high performance | Conductivity/TDS/°C/°F | .. to 200 ppt | 50 data sets |
 [ DISCONTINUED ] | 0.001 resolution, optimum performance | Conductivity/TDS/Resistivity/°C/°F | .. to 99,999 ppm | 100 data sets |
 [ DISCONTINUED ] | Windows® CE-driven single channel colour touchscreen | Conductivity/Resistivity/TDS/Salinity | Up to 500 ppt | 10,000 data sets |
Process Instruments
| Model | Meter Highlights | Parameter | Range | Controller Functions |
|---|---|---|---|---|
 [ DISCONTINUED ] | 1/8 DIN panel mount, 2 set points relays, Easy set point adjustment and direct CAL | TDS/°C | .. to 200 ppt | Limit Control |
 [ DISCONTINUED ] | 1/8 DIN panel mount, 2 set points relays, Password protection for set point adjustment and calibration | TDS/°C | .. to 200 ppt | Limit Control |