Waterproof Multiparameter PT Testr 35 from Oakton Instruments

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

    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.

    Click below to download Acrobat (.pdf) file of:
    Waterproof Multiparameter PTTestr35 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
    TDS: 0 to 1000 ppm, 1.00 to 10.00 ppt
    Temp: 32 to 122F (0 to 50C) 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: 0.5C, 0.9F
    Calibration pH: 5 points
    TDS: 2 points
    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 50C (32 to 122F)
    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)