TDSTestr 10 features 1 ppm resolution below 1000 ppm and 0.01 ppt resolution above 1.00 ppt
TDSTestr 20 features 1 µS resolution below 2000 µS and 0.01 mS resolution above 2.00 mS
Microprocessor-based
Easy two-point push-button calibration
Automatic Temperature Compensation
Hold function; Auto off; error messages

The dual-range TDSTestrs 10 and 20 allow you to measure clean, treated, used and waste water- all with one instrument! They feature a wide measuring range with new, improved higher resolution and a faster temperature response.

Click below to download Acrobat (.pdf) file of:
TDSTestr 10-40 product bulletin
TDSTestr 10-20 manual
Tech tip: TDSTestr Comparison Chart

TDSRange	WD-35661-50 0.0 to 999 ppm and 1.00 to 9.99 ppt WD-35661-55 0 to 1999 µS and 2.00 to 19.99 µS
TDSResolution	WD-35661-50 0.1 ppm, 0.01 ppt WD-35661-55 1 µS , 0.01 µS
Accuracy	±2% full scale
Calibration	Two points push button (one per range)
ATC	Yes
Electrode	Built-in
Operating Temperature	0 to 50°C (32 to 122°F)
Power	Four 1.5 V batteries
Battery life	20 hours continuous use
Dimensions	5.875" x 1.5" x 0.75" (15 x 4 x 2.5 cm)
Shipping weight	4.5 oz (125 g)

TDSTestrs 10 and 20 from Oakton

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