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    …seeing the fuzzy blue line common with traditional refractometers, or just want to make your life easier, pick up a Hanna HI98319 Salinity Testing Pen! Comes with calibration solutions ensuring proper readings Ideal for testing salinity in any aquariums Pocket-sizedfor easy travel Graphite sensors…

    $69.00 Regular Price: $

    …pH of your reef tank, or the electrical conductivity of your RODI water is a necessity, and Hanna's HI98129 Combo Pen is the perfect all in one solution. The lightweight and portable pen can test pH, conductivity, or TDS (total dissolved solids) in a single pocket-sized device. The HI98129 can also…

    $157.99 Regular Price: $

    …Accuracy: +/- 2% EC to TDS Conversion Factor: Non-linear conversions for KCl, 442TM or NaCl solutions, selected by the user. Probe: Detachable platinum electrodes Housing: IP-67 Waterproof (submersible; floats) What’s Included? COM-100 EC/TDS Meter Pen Translucent Cap 2 (AAA) Batteries

    $76.95 Regular Price: $

    The Milwaukee pH600 pH Pen is an economical easy to use meter that returns quick, reliable pH measurements. This is a great option for quick spot checks such as when mixing water or when testing tap water or RO/DI output. Specifications: Range: 0.0 - 14.0 pH Resolution: 0.1 pH Accuracy: +/- 0.2 pH…

    $24.99 Regular Price: $

    …your saltwater tank is right where you want it. The pen style tester will give you the salinity reading along with the temperature of the water at the same time. With a 0.1ppt resolution, once you start using the Hanna HI98319 Salinity Testing Pen, you will never look through a refractometer ever…

    $255.00 Regular Price: $

    …Environment - 0 to 50°C (32 to 122°F); RH max 100% Dimensions - 160 x 40 x 17 mm (6.3 x 1.6 x 0.7“) What's Included? 1x Hanna HI98108 pH Pen 1x Protective Cap 1x 4.01 Calibration Solution 2x 7.01 Calibration Solution 1x CR2032 Battery Quality Certificate Hanna-HI98108 Owners Manual

    $49.50 Regular Price: $

    Quickly and accurately get a digital readout of the salinity and temperature of your aquarium water. Seawater contains a variety of elements that will contribute to the overall specific gravity of the water. Many digital salinity meters are calibrated to read a sodium chloride only or brine solution…

    $69.99 Regular Price: $

    …does not have any delicate pins that could break. Use the replacement electrode tool that is included with the pH pen to expertly replace the electrode in your HI98129 pH Combo Pen. We recommend calibrating your electrode any time that a new one is installed. Specifications: Reference - Single,…

    $55.00 Regular Price: $

    NIST Traceable Salinity Calibration Hanna HI70024P Salinity Calibration Sachets are perfect for any conductivity probe or pen. The single-use sachets are made of light-blocking foil that prevents oxidation, ensuring the solutions are as fresh as the day it was packaged. Each sachet is marked with a…

    $1.05 Regular Price: $

    NIST Traceable Salinity Calibration Hanna HI70024P Salinity Calibration Sachets are perfect for any conductivity probe or pen. The single-use sachets are made of light-blocking foil that prevents oxidation, ensuring the solutions are as fresh as the day it was packaged. Each sachet is marked with a…

    $26.00 Regular Price: $
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    …(one point) with digital fine tuning Electrode: Replaceable glass sensor and reference tube electrodes Housing: IP-67 Waterproof (submersible; floats) Power source:2x AAA Batteries (included) Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches) What's Included? 1x PH-200 Pen 2x AAA Batteries

    $79.99 Regular Price: $

    Milwaukee Calibration Solution sold in single use packets are great for calibrating your pH probe or pen. Many pH probes will start to loose their calibration in as short as a month or two depending on your probe. We suggest calibrating probes every 30-60 days for the most reliable readings.…

    $1.09 Regular Price: $
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