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.

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Waterproof Multiparameter PCSTestr35 Pocket Meter Manual

Learn more about the Oakton Multiparameter Testrs

See how easy is it to replace the sensor on your Oakton Testr

Troubleshooting your Oakton pHTestr

Range	pH: 0.0 to 14.0 Conductivity: 0 to 200 uS; 201 to 2000 uS; 2.01 to 20.00 mS TDS: 0 to 100.0 ppm; 100 to 1000 ppm;01.00 to 10.00 ppt Salinity: 0 to 999 ppm Temp: 32 to 122°F (0 to 50°C) 2.01 to 10.00 ppt
Resolution	pH: 0.1 pH Conductivity: 10 uS, 0.1 mS TDS: 0.1 ppm, 1 ppm; 0.01 ppt Salinity: 0.1 below 100 ppm/1 ppm above Temperature: 0.1°
Accuracy	pH: ±0.1 pH Conductivity: ±1% full-scale TDS: ±1% full-scale Salinity: ±1% full-scale Temperature: ±0.5°C, ±0.9°F
Calibration	pH: 5 points Conductivity: 3 points TDS: 3 points Salinity: 1 point Temperature: 1 point
ATC	Yes
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)