How do I use automatic buffer recognition?

For auto buffer recognition, a typical combination of pH buffer would be pH 4.01, 7.00, 10.01 for the U.S buffer set, or 4.01, 6.86, 9.18 for the N.I.S.T buffer set. Ensure the mV signal is within the correct range and rinse well to avoid cross-contamination between each calibration.