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Multiparameter PT Testr 35, pH and TDS Meter

Product SKU: WD-35435-05

Quick Overview

pH and Conductivity Pocket Meter

Availability: In stock



Waterproof Multiparameter PT Testr 35

Great for water, laboratory or plant use, these multiparameter Testrs feature single-junction pH electrodes for longer life and wider range of sample compatibility. Pin-style conductivity sensors feature stainless steel electrodes for chemical resistance and durability. Replaceable sensor module saves you money by reusing the meter body. Advanced features include auto-shutoff, user-adjustable temperature coefficient, self-adjusting TDS and salinity factor, and low-battery indicator.


Measure pH and TDS in one easy-to-use meter



  • Combine measurement capabilities of two testers in one convenient pocket-sized unit 
  • Up to 5 point pH calibration with NIST or USA autobuffer recognition 
  • TDS features autoranging based on the concentration of your sample


Additional Information

Technical Specifications
Range pH: 0.0 to 14.0
TDS: 0 to 1000 ppm, 1.00 to 10.00 ppt
Temp: 32 to 122°F (0 to 50°C) 2.01 to 10.00 ppt
Resolution pH: 0.01 pH
TDS: 1 ppm; 0.01 ppt
Temperature: 0.1°
Accuracy pH: ±0.01 pH
TDS: ±1% full-scale
Temperature: ±0.5°C, ±0.9°F
Calibration pH: 5 points
TDS: 2 points
Temperature: 1 point
Electrode Replaceable
pH: single-junction
Conductivity/TDS/salinity: dual-pin stainless steel
Waterproof/Dustproof (IP67) Yes
Operating Temperature 0 to 50°C (32 to 122°F)
Power Four 1.5 V alkaline batteries (included), Eveready A761 LR44 equivalent replacement
Battery life Approximately 250 hours continuous use
Dimensions Unit only: 6.5" x 1.5" dia (16.5 x 3.8 cm)
Boxed: 7.25" x 2.5" x 2" (18.4 x 6.4 x 5.0 cm)
Shipping weight Unit only: 3.25 oz (90 g);
Boxed 6.0 oz (170 g)