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141 results found.

Exporting Data from EG4100 Series Devices

From the home screen, click the export button in the upper left of the graph (highlighted in yellow below).

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EG4100 Series Wi-Fi Setup with N150 Edimax Wi-Fi Nano USB Adapters

Manually entering SSID and password:

To configure the wireless network:

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Water-Detect Feature in the HOBO MX2501 pH Logger is Not Working

The HOBO MX2501 pH logger's battery-saving water-detect feature is only guaranteed to work in water with at least 100 µS/cm conductivity.

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HOBO MX2501 pH Electrode and Logger Storage

When storing the HOBO MX2501 pH logger over an extended period of time, remove the electrode from the logger and place it in the electrode storage bottle with clean, fresh storage solution.

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HOBO MX2501 User-Replaceable Electrode Info

With gel electrolyte and double Pellon® junctions minimizing the chance of contamination of the reference electrolyte, the user-replaceable, plastic-bodied pH electrode for the HOBO MX2501 pH logge

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Can the HOBO MX2501 pH Logger be Used with the Total Hydrogen Scale (pHT)?

The Total Hydrogen Scale (pHT) requires custom buffers that are designed to mimic the activity of hydrogen ions in seawater.

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Custom pH Buffers to Calibrate the HOBO MX2501 pH Logger

The HOBO MX2501 pH logger calibration procedure is only designed to work with National Bureau of Standards (NBS) pH buffers 4.01, 7.00, and 10.00.

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Wiping the Electrodes Between pH Buffers - Don't Do It!

When calibrating a pH electrode, the user is mitigating the effect of the condition of the electrode, among other factors.

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Why Do I Always Have to Calibrate in pH 7.00 and Then at Least One Other Buffer?

pH is considered an inferred value. This means that raw data (in this case potential as mV and temperature) are used to calculate pH with a known algorithm called the Nernst Equation.

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Calibrating for pH at Temperatures Other than 25°C

The observed pH of the buffers (and samples) varies depending on temperature.

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