Omega PHB21, Руководство пользователя

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3.
These are solutions that resist the ph variations, by effect of adding acids or bases and/or by dilution, all happening like if they
had an acid reserve and/or alkaline. Selected solutions are used as standard for calibration of ph meters based on operational
definition. They are fixed points that define the pH scale. Composed, usually, by a weak acid mixed with its own strong base salt.
The KCl is a neutral salt, so does not interfere at the pH value. It can be used to raise the conductivity at the sample, in case we
Are measuring a weak electrolyte.
Supplied in 475ml Bottles (other volumes upon request)
OMEGA offers the following Buffer Solutions:
PHA-4 4.01pH
PHA-7 7.00pH
PHA-10 10.01pH
6
PH Measurement (cont.)
Buffer Soutions