Benchtop meters are available with probes that use the four-ring technology. The benchtop meters have automatic calibration and automatic range selection. Benchtops also have the USP <645> method including a multiparameter pH/EC version that is useful for all three stages of verification.
Portable meters are available with probes that use either the two pin (amperometric) or four-ring (potentiometric) technology. The portable meters include those with manual selection of ranges and versions with automatic range selection. Meters are available as single parameter or multiparameter versions. Single parameter portables with the USP <645> method pre-programmed are also available along with a low flow cell to prevent carbon dioxide from entering into the sample.
Process controllers are available for continuous monitoring and display results in real time. Process controllers have the ability to use a relay to activate a solenoid valve or other device to make adjustments to a process. This is useful for many applications including the switching of DI mixed beds to maintain high purity of water.
Accessories include shockproof rubber boots used with portable meters to offer additional protection against accidental drops of the meter. The shockproof rubber boots increase the tactile feel of the meter, giving it a non-slip grip. Other accessories included replacement items supplied with some of the multiparameter meters.