To eliminate temperature errors associated with the pH electrode, attach the automatic temperature compensation (ATC) probe for best accuracy. Without temperature compensation, pH accuracy will worsen as samples deviate from 25ºC and pH 7.
1) Press as needed to select pH.
2) Dip the pH and ATC electrodes into pH buffer and press . The secondary display will lock on the appropriate buffer value. Provide stirring for best results. When the READY indicator appears, press to accept. The primary reading will flash briefly before the secondary display begins scrolling the remaining available buffers.
3) Rinse the pH and ATC electrodes then dip into the next pH buffer. The secondary display will lock on the appropriate buffer value. When the READY indicator appears, press to accept. The primary reading will flash briefly then display the percent efficiency (slope) before the