That provides accurate measurement of pH, oxidation-reduction potential(ORP), conductivity, salinity, and total dissolved solids (TDS).Starter pen meter are the economical,Durably Constructed to Withstand Wear and Tear Resulting from Repetitive use
Durably Constructed to Withstand Wear and Tear Resulting from Repetitive use,Waterproof Housing Protects the meter in their Working Environment,Simple Operation in a Slim and Portable Design,measurement of pH, oxidation-reduction potential(ORP), conductivity, salinity