Water Testing Equipment, pH Testers, Indicators, Meters and Electrodes from Industrial Water Equipment

HI 255 - Combined pH/ORP and EC/TDS/NaCl Meter for Laboratories

The new HI 255 is the product of 26 years of instrument testing and design experience. It is the first laboratory bench meter to simultaneously perform precise, repeatable pH and conductivity measurements. This meter was designed to satisfy the requests of many production and quality control laboratories that need quick multiple parameter measurement results with a single precision instrument.The pH and conductivity circuits have been electrically separated, so that it is not necessary for the two probes to be simultaneously immersed in the same solution. The conductivity probe will not interfere with your pH measurements and the response of the pH electrode is immediately stable.

HI 255 is a high performance instrument that measures within a wide range of multiple parameters. With this single laboratory bench meter you can perform pH, ORP, conductivity, TDS, NaCl percentage and temperature measurements. pH measurements are automatically compensated for temperature, thanks to the external probe included with the instrument. pH calibration is possible in 1, 2, or 3 points between the 5 available memorized buffers, to ensure a higher level of precision. EC measurements can be compensated according to a reference temperature of 20 or 25°C. The most suitable range of EC and TDS is automatically selected, and EC calibration can be performed at 1 point. EC calibration can be chosen between 6 memorized buffers. Thanks to the logging function, measurements are stored in non volatile memory, and can be downloaded to a PC through the RS232 serial port. In addition to these features, HI 255 is rounded out with GLP features that store the calibration data of any measurement to be displayed upon request.

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