Normal samples
For easy-going measurements, your system is the Metrohm 827 pH lab and the ideal electrode: the Metrosensor Unitrode.
If your sample contains gases...
such as ammonia and the electrolyte solution is contaminated with the sample, we recommend the Metrohm meter 827 pH lab together with the Metrosensor Profitrode, a combined pH electrode with double junction reference part.
If you notice precipitation in the diaphragm...
use the Metrohm 827 pH lab together with the Metrosensor Profitrode, a combined pH electrode with ground-joint diaphragm and bridge electrolyte.
