Measures the pH of the prepared solution potentiometrically with a calibrated glass electrode.
A glass electrode develops a voltage across its membrane in proportion to the difference in hydrogen ion activity between the sample and an internal reference solution. The meter reads that voltage against a reference electrode and converts it to pH units.
The electrode is calibrated with standard buffers bracketing the expected range immediately before the measurement, which sets the slope and offset used in that conversion. Temperature affects both the electrode response and the pH of the solution itself, so the reading is taken with temperature compensation and the temperature is recorded.
Sample intake instructions, including the quantity required, are sent once we know which assays you want.