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HOBO data loggers for monitoring indoor, outdoor, and underwater environments.



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    MX2500-MAINT-KIT

    The Maintenance Kit includes the Calibration Kit (MX2500-CAL-KIT) and the Electrode Storage Solution (MX2500-STORE-SOLN).

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    MX2500-STORE-SOLN

    The Electrode Storage Solution is used to properly store and condition the pH electrode that is used with the HOBO MX pH Logger. The purpose of the storage solution is to maintain the hydrated gel layer that is integral to accurate pH readings.

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    MX2500-CAL-xx

    The pH 4.01, 7.00, and 10.00 Calibration Solutions (475 mL bottles) are used to calibrate the pH electrode in the HOBO MX pH Logger.

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    MX2500-CAL-KIT

    The Calibration Kit includes pH 4.01, pH 7.00, pH 10.00 buffer solutions (475 mL bottles), and the 4 oz. calibration beaker (MX2500-CAL-BKR).

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    MX2500-CAL-BKR

    The 4 oz. calibration beaker can be used to calibrate the HOBO MX pH Logger and to store calibration solutions.

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    MX2500-GUARD

    The Anti-Biofouling Copper Guard can be used in addition to the standard electrode guard for protection against biofouling during deployment. The anti-biofouling guard uses copper to reduce biofouling, while still allowing proper water flow to the sensor.

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    MX2500-END-CAP

    The replacement sensor end cap replaces the original sensor end cap that ships with the HOBO MX pH Logger.

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    MX2500-ELECTRODE

    With its gel electrolyte and double Pellon® junction minimizing the chance of contamination of the reference electrolyte, this plastic-bodied electrode and the HOBO MX2501 pH and Temperature Data Logger are perfectly suited for environmental monitoring of streams, lakes, rivers, estuaries, and oceans. The electrode uses potentiometric and temperature measurements of samples to determine the pH, and can easily be replaced because of the simple plug-and-play 3.5-mm connector. Following proper calibration, storage, and maintenance protocols for the electrode, the MX2501 can achieve pH accuracies of ±0.10 pH units within ±10°C of temperature at calibration.

    The replacement pH electrode replaces the original pH electrode that ships with the HOBO MX2501 logger. The electrodes should be replaced after six months of use.

    NOTE: pH electrodes should always be stored in storage solution when not deployed.

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