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pH Meters & Testing Instruments



Sonic Supply offer a selection of premium quality pH and conductivity meters perfect for laboratories and science classroom experiments. pH meters measure the given hydrogen-ion activity in given solutions. This help the user know how acidic or alkaline a solution is. Common applications include laboratory experiments or quality control. Select meters do not include electrodes view our Sentek products for compatible pH electrodes. Contact us for recommendations for compatible electrodes.

Choose from our variety of benchtop meters, portable meters, and pocket pH meters. Benchtop meters are ideal for calculating precise ph measurment in a lab setting. Portable meters are great for field use and pocket meters are ideal for fast general measurements of ph levels.

Additional testing instruments we offer includes moisture meters, sound level meters, digital thermometers and more.
  • Reed Instruments R8080 Data Logging Sound Level Meter with Bargraph

    Reed Instruments
    Original price $377.88 - Original price $377.88
    Original price
    $377.88
    $377.88 - $377.88
    Current price $377.88
    In stock

    Quick responding triple range sound level meter with backlit display, analog bargraph and built-in memory to data log up to 64,000 points.REED R808...

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    Original price $377.88 - Original price $377.88
    Original price
    $377.88
    $377.88 - $377.88
    Current price $377.88
  • Reed Instruments Temp And Humidity Meter, Usb

    Reed Instruments
    Original price $204.99 - Original price $204.99
    Original price
    $204.99
    $204.99 - $204.99
    Current price $204.99
    In stock

    Record up to 32,000 ambient temperature and relative humidity readings. Features a real-time clock with day/time stamp and LCD display to view live...

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    Original price $204.99 - Original price $204.99
    Original price
    $204.99
    $204.99 - $204.99
    Current price $204.99
  • Bante Instruments Bante901P Portable pH/Conductivity Meter

    Bante Instruments
    Original price $562.49 - Original price $562.49
    Original price
    $562.49
    $562.49 - $562.49
    Current price $562.49
    Out of stock

    High-performance multiparameter water quality meter contains the 4 measurement modes, the meter is suitable for measuring the pH, mV, conductivity ...

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    Original price $562.49 - Original price $562.49
    Original price
    $562.49
    $562.49 - $562.49
    Current price $562.49
    Sold out
  • Reed Instruments Led Light Meter

    Reed Instruments
    Original price $256.13 - Original price $256.13
    Original price
    $256.13
    $256.13 - $256.13
    Current price $256.13
    In stock

    Auto-ranging LED light meter with detachable and rotatable sensor that allows for one-handed operation.REED R8140 OffersThis LED Light Meter is cap...

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    Original price $256.13 - Original price $256.13
    Original price
    $256.13
    $256.13 - $256.13
    Current price $256.13
  • Reed Instruments Carbon Monoxide Detector

    Reed Instruments
    Original price $228.56 - Original price $228.56
    Original price
    $228.56
    $228.56 - $228.56
    Current price $228.56
    In stock

    Dual LCD simultaneously displays carbon monixde (CO) and ambient temperature.REED R9400 Specifications Carbon Monoxide Measuring Range 1 to 10...

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    Original price $228.56 - Original price $228.56
    Original price
    $228.56
    $228.56 - $228.56
    Current price $228.56
  • Reed Instruments Sound Level Meter Kit, Datalogger

    Reed Instruments
    Original price $660.42 - Original price $660.42
    Original price
    $660.42
    $660.42 - $660.42
    Current price $660.42
    In stock

    This kit comes equipped with the tools you need to conveniently calibrate your sound level meter in the field. The R8080-KIT includes the R8080 Dat...

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    Original price $660.42 - Original price $660.42
    Original price
    $660.42
    $660.42 - $660.42
    Current price $660.42
  • Reed Instruments Ultrasonic Leak Detector

    Reed Instruments
    Original price $113.71 - Original price $113.71
    Original price
    $113.71
    $113.71 - $113.71
    Current price $113.71
    In stock

    Identifies and pinpoints leaks generated by pressure, vacuum, water, gas or air.REED R9100 OffersThis ultrasonic leak detector converts ultrasound ...

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    Original price $113.71 - Original price $113.71
    Original price
    $113.71
    $113.71 - $113.71
    Current price $113.71
  • Reed Instruments Sound Level Meter Kit

    Reed Instruments
    Original price $499.63 - Original price $499.63
    Original price
    $499.63
    $499.63 - $499.63
    Current price $499.63
    In stock

    This kit comes equipped with a rugged carrying case and the tools you need to conveniently calibrate your sound level meter in the field. The R8050...

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    Original price $499.63 - Original price $499.63
    Original price
    $499.63
    $499.63 - $499.63
    Current price $499.63
  • Reed Instruments REED R6020 Temperature & Humidity USB Data Logger

    Reed Instruments
    Original price $113.71 - Original price $113.71
    Original price
    $113.71
    $113.71 - $113.71
    Current price $113.71
    In stock

    Record up to 16,000 ambient temperature and 16,000 relative humidity readings.REED R6020 OffersThis compact datalogger records up to 32,000 tempera...

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    Original price $113.71 - Original price $113.71
    Original price
    $113.71
    $113.71 - $113.71
    Current price $113.71
  • Reed Instruments Moisture Meter

    Reed Instruments
    Original price $113.71 - Original price $113.71
    Original price
    $113.71
    $113.71 - $113.71
    Current price $113.71
    In stock

    Pin and Pinless functions measures moisture in wood and building materials (i.e. sheet rock, cardboard, plaster, concrete and mortar).REED R6018 Of...

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    Original price $113.71 - Original price $113.71
    Original price
    $113.71
    $113.71 - $113.71
    Current price $113.71
  • Reed Instruments Heat Stress Meter

    Reed Instruments
    Original price $159.65 - Original price $159.65
    Original price
    $159.65
    $159.65 - $159.65
    Current price $159.65
    In stock

    Wet bulb globe temperature (WBGT) considers the effects of temperature, humidity and direct or radiant sunlight.REED R6200 OffersThis heat stress m...

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    Original price $159.65 - Original price $159.65
    Original price
    $159.65
    $159.65 - $159.65
    Current price $159.65
  • Reed Instruments Tachometer

    Reed Instruments
    Original price $148.17 - Original price $148.17
    Original price
    $148.17
    $148.17 - $148.17
    Current price $148.17
    In stock

    Non-contact RPM and revolution count measurements with 5 digit backlit LCD display.REED R7050 OffersThis pocket-sized compact photo tachometer meas...

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    Original price $148.17 - Original price $148.17
    Original price
    $148.17
    $148.17 - $148.17
    Current price $148.17
  • Reed Instruments Coating Thickness Gauge

    Reed Instruments
    Original price $320.45 - Original price $320.45
    Original price
    $320.45
    $320.45 - $320.45
    Current price $320.45
    In stock

    Automatically identifies ferrous and non-ferrous substrates.REED R7800 OffersThis coating thickness gauge is designed for non‐invasive coating thic...

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    Original price $320.45 - Original price $320.45
    Original price
    $320.45
    $320.45 - $320.45
    Current price $320.45
  • Globe Scientific Fingertip Pulse Oximeter

    Globe Scientific
    Original price $52.64 - Original price $52.64
    Original price
    $52.64
    $52.64 - $52.64
    Current price $52.64

    Portable, battery operated fingertip pulse oximeter for convenient, real-time monitoringof blood oxygen levels and pulse rateortable, battery opera...

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    Original price $52.64 - Original price $52.64
    Original price
    $52.64
    $52.64 - $52.64
    Current price $52.64
  • Reed Instruments R8010 Laser Distance Meter, 328' (100m)

    Reed Instruments
    Original price $148.17 - Original price $148.17
    Original price
    $148.17
    $148.17 - $148.17
    Current price $148.17
    In stock

    Dust and splash-proof (IP54), designed for one-handed operation.REED R8010 OffersThis laser distance meter measures up to 328 feet (100 meters) and...

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    Original price $148.17 - Original price $148.17
    Original price
    $148.17
    $148.17 - $148.17
    Current price $148.17
  • Reed Instruments R8004 Laser Distance Meter, 131' (40m)

    Reed Instruments
    Original price $67.77 - Original price $67.77
    Original price
    $67.77
    $67.77 - $67.77
    Current price $67.77
    In stock

    Designed for one handed operation, internal memory saves up to 30 measurements.REED R8004 OffersThis laser distance meter measures up to 131 feet (...

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    Original price $67.77 - Original price $67.77
    Original price
    $67.77
    $67.77 - $67.77
    Current price $67.77
  • Reed Instruments Stem R222 Digital Thermometer

    Reed Instruments
    Original price $22.98 - Original price $22.98
    Original price
    $22.98
    $22.98 - $22.98
    Current price $22.98
    In stock

    This Stainless Steel Digital Stem Thermometer is capable of measuring -40 to 482°F (-40 to 250°C) and keeps track of maximum and minimum readings. ...

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    Original price $22.98 - Original price $22.98
    Original price
    $22.98
    $22.98 - $22.98
    Current price $22.98
  • Reed Instruments LM-81AM Compact Vane Anemometer

    Reed Instruments
    Original price $102.22 - Original price $102.22
    Original price
    $102.22
    $102.22 - $102.22
    Current price $102.22
    In stock

    This compact anemometer measures in fpm, m/s, kph, mph and knots. The LM-81AM keeps track of minimum and maximum readings and features a data hold ...

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    Original price $102.22 - Original price $102.22
    Original price
    $102.22
    $102.22 - $102.22
    Current price $102.22
  • Reed Instruments Stem Digital Thermometer

    Reed Instruments
    Original price $22.98 - Original price $22.98
    Original price
    $22.98
    $22.98 - $22.98
    Current price $22.98
    In stock

    NSF certified pocket sized stem thermometer with 4.75" (121mm) stainless steel probe.REED R2000 OffersThis Stainless Steel Digital Stem Thermometer...

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    Original price $22.98 - Original price $22.98
    Original price
    $22.98
    $22.98 - $22.98
    Current price $22.98
  • Reed Instruments Digital Psychrometer Thermo-Hygrometer

    Reed Instruments
    Original price $113.71 - Original price $113.71
    Original price
    $113.71
    $113.71 - $113.71
    Current price $113.71
    In stock

    Accurate and fast responding with optional probe for contact/differential temperature measurements.This Digital Psychrometer provides simultaneous ...

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    Original price $113.71 - Original price $113.71
    Original price
    $113.71
    $113.71 - $113.71
    Current price $113.71
  • Reed Instruments REED LM-8000 Multi-Function Environmental Meter

    Reed Instruments
    Original price $182.62 - Original price $182.62
    Original price
    $182.62
    $182.62 - $182.62
    Current price $182.62
    In stock

    Fast responding, pocket size design allows for one-handed operation.REED LM-8000 OffersThis compact 6-in-1 environmental meter measures air velocit...

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    Original price $182.62 - Original price $182.62
    Original price
    $182.62
    $182.62 - $182.62
    Current price $182.62
  • Bante Instruments Bante530 Portable Conductivity TDS Meter

    Bante Instruments
    Original price $359.99 - Original price $359.99
    Original price
    $359.99
    $359.99 - $359.99
    Current price $359.99
    Out of stock

    Professional portable conductivity meter, 5 points calibration, selectable TDS conversion factor, setup menu contains 10 optional parameters. Accur...

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    Original price $359.99 - Original price $359.99
    Original price
    $359.99
    $359.99 - $359.99
    Current price $359.99
    Sold out
  • Bante Instruments Ecsan 30 Pocket Conductivity TDS Tester

    Bante Instruments
    Original price $89.99 - Original price $89.99
    Original price
    $89.99
    $89.99 - $89.99
    Current price $89.99
    In stock

    Multiparameter pocket conductivity meter contains the TDS measurement mode, 1 to 3 points calibration, Automatic Temperature Compensation. Accuracy...

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    Original price $89.99 - Original price $89.99
    Original price
    $89.99
    $89.99 - $89.99
    Current price $89.99
  • Bante Instruments PHscan40 Pocket pH Tester

    Bante Instruments
    Original price $89.99 - Original price $89.99
    Original price
    $89.99
    $89.99 - $89.99
    Current price $89.99
    In stock

    Digital pH meter, compact design, manual temperature compensation. The tester comes with a plastic-body pH electrode for outdoor environments and f...

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    Original price $89.99 - Original price $89.99
    Original price
    $89.99
    $89.99 - $89.99
    Current price $89.99