High levels of soluble salts in the soil can be caused by excessive fertilization, insufficient watering, poor drainage, or by some contributing salt water intrusion. High concentrations of soluble salts can inhibit plant growth and will reduce overall crop yields. Greenhouse plants and other sensitive crops may be damaged if soluble salts exceed 2000 ppm.
Soluble Salts, or Total Dissolved Salts, are measured by means of a Conductivity Meter. A conductivity reading measures the capacity of a solution to conduct an electric current and is directly related to the total ionic concentration of dissolved substances in the solution. Thus, the conductivity reading of a soil extract can be converted into a reading of Total Dissolved Salts to indicate combined levels of sulfates, chlorides and other salts in the soil. Extract is prepared using distilled water, not included with meters.
LaMotte TDS 6 Series Meter
Microprocessors have enabled meter manufacturers to combine many features into smaller designs with better accuracy. The 5 Series meters are good examples. Meter includes electrode and temperature probe, and is available with or without a carrying case.
Push button operation
Calibration 1 to 3 points
Range: 0.00-99.9 ppm, 100-999 ppm, 1.00-9.99 ppt
Power: Four AAA batteries included
Temperature readout 0-100°C/0.1°C
Automatic Temperature Compensation
Auto-off after 17 minutes
Hold function
Adjustable conductivity to TDS factor
Instructions included for measuring TDS in soil
Meter has a two-year warranty
Specifications
Range:
0.0 to 99.9 ppm, 100 to 999 ppm, 1.00 to 9.99 ppt
Resolution:
0.1 ppm, 1 ppm, 0.01 ppt
Accuracy:
±2% full scale
Calibration:
1 to 3 points (push button; 1 point per range)
Temperature Compensation:
Automatic Temperature Compensation (ATC) fixed 2% per °C factor
Power:
Four AAA alkaline batteries (supplied) 60 hours continuous use
Display:
Single Custom LCD
Operating Temperature:
32 to 122°F; 0 to 50°C
Size:
54.5 x 2.7 x 1.3 inches
TO VIEW INSTRUCTIONS CLICK ON ORDER CODE
Item Description
Order Code
TDS 5 Meter (without carrying case)
5-0036
TDS 5 Meter (with carrying case) includes two calibration standards
5-0037
LaMotte TDS Tracer Meter
Autoranging meter offers 3 ranges to measure pure water to salinity solutions using the same conductivity cell
Instructions included for measuring TDS in soil.
4 selectable units: µS or mS (Conductivity), ppm/ppt (TDS), mg/L or gL (TDS), and ppm/ppt (Salinity S)
LaMotte TDS 6 Series Meter
LaMotte TDS Tracer Meter