Changes

== Calibration ==

== Calibration ==

This instrument should be calibrated monthly using a 7.01 and 4.01 buffer solution, which is stored in the brewing cabinet with the pH meter. Initial tests should be made of the solutions and the errors recorded prior to calibration so we can see trends. A pair of shot glasses should be used to hold buffer solution. Not much needs to be added to completely immerse the electrodes. Buffers should be thrown out after use to prevent contamination. Calibration solutions will need to be purchased periodically.

This instrument should be calibrated monthly using a 7.01 and 4.01 buffer solution, which is stored in the brewing cabinet with the pH meter. Initial tests should be made of the solutions and the reported values recorded prior to calibration so we can see trends. A pair of shot glasses should be used to hold buffer solution. Not much needs to be added to completely immerse the electrodes. Buffers should be thrown out after use to prevent contamination. Calibration solutions will need to be purchased periodically.

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