The most common error comes from not removing the rubber plug. Rinse the cell well and pour the sample to be measured into both wells. A small valve to bleed off small amounts of water from a container vessel or bath. The ratio of the electric current density to the electric field in a material. Some materials such as metals, copper, silver, gold, platinum have very high conductivities but other materials such as plastic may have a very low conductivity.
Seawater contains a large quantity of dissolved salts therefore, has a high conductivity.
HCl Hydrochloric acid used to clean scale, accumulations of salts or alkaline condition. KCl Potassium Chloride, salt used to prepare micromhos standards. The deflection of the pointer is proportional to the quantity measured. Micromho scales are linear. MHO Unit of conductivity is the inverse of ohm or ohms.