Chek-MitepH-10ThisHandheldpHMeteroffersvalueandperformanceforpHmeasurement. ThisHandheldpHMeterautomaticallyrecognizesbuffersolutions4,7,and10.01,andthencalibratesonthatvalue,therearenomanualadjustmentstomake.Chek-MitepH-15ThisHandheldpHMetermeasurespHbasedonanautomaticcalibration. TheChek-MitepH-15HandheldpHMeterhasaManualendpointwhichalsoprovidesthecapabilitytofreezethedisplayonceareadinghasstabilized.Chek-MitepH-20SimilartotheChek-MitepH-15,thisHandheldpHMeterofferstheaddedconvenienceofautomatictemperaturecompensation(ATC)andhasanautomaticendpointadjustment.