The LCD Touchscreen Analyzer E91 measures nine parameters: DO, PH, Temperature, ORP, EC, Resistivity, TDS, ISE, and Ion. It also features an LCD touchscreen, making it easy to use and portable. Ideal for lab use, this analyzer ensures accurate and reliable results. Features: Color High contrast LCD touchscreen, 4.3 inches. Multi-reading feature allows auto-read, timed-read and continuous-read. Automatic/Manual temperature compensation ensures accurate results. Auto-hold feature senses and locks the measurement endpoint. Data capacity of up to 500 sets for each parameter (GLP-compliant). Support for USB communication. Auto-power off feature effectively extends the battery service life. Reset feature automatically resumes all settings back to factory default options. IP65 waterproof. The portable meter is suitable for fields measurements and out door measurements. pH 1-5 points calibration with Standard Recognition. pH Selectable pH buffer groups, including NIST, DIN, GB. pH Automatic electrode diagnosis with pH slope and offset display. Ion 1-5 points calibration. Ion Selectable measurement unit, including μg/L, mg/L, g/L, mmol/L, pX, ppm, etc. Ion Measurement modes are supported, including Direct Reading mode, Ion Standard Addition mode, Sample Addition mode and GRAN mode. Ion Over 10 methods are built-in, including F-, Cl-, Br-, I-, NO3-, BF4-, NH4+, K+, Na+, Ca2+, Cu2+, Pb2+, Ag+ and etc., user-defined method is supported. Conductivity 1-3 points calibration with Standard Recognition. Conductivity Settable parameters, including cell constant, temperature compensation coefficient, and TDS factor. Conductivity Temperature compensation type (none, linear, pure water). Optional parameter: ORP / Resistivity / TDS / ISE / Ion Specifications: pH Range: -2.00 to 20.00 pH pH Resolution: 0.1, 0.01 pH Accuracy: ± 0.01 pH pH Calibration Points: Up to 5 pH Standard Customization: Yes Calibration Reminder: Yes pH Standard Recognition: NIST, GB, USA and DIN buffers Temperature Unit: ºC, ºF Temperature Range: -5 to 110 ºC, 23 to 230 ºF Temperature Resolution: 0.1 Temperature Accuracy: ±0.2 Package includes: E-301-QC 3 in 1 pH composite electrode DJS-1VTC EC electrode NIST pH standard solution(4.01, 7.00, 10.01) ，50ml/vial 1413μS/cm EC standard solution, 50ml, 1 vial Electrode holder Silicone rubber case Wristbands Carrying Case Warranty: Main unit - 2 Years Ions electrode - 6 Months pH, conductivity, and DO electrodes - 1 Year
