Multi-parameter portable meters with GLP functions handylab pH/LF 12 and handylab multi 12

The multi-parameter portable meters can be operated for ap-prox. 2,500 hours independent-ly of a mains power supply using four conventional batte-ries, or with the optional po- wer pack. The display shows a reminder to replace the batteries in good time. The calibration data are retained when the bat- teries are changed. The multi-parameter pocket-size meters – handylab pH/LF 12 and handylab multi 12 – in shock-proof, water-tight casings are ideally suited for field work. Sensors We supply the handylab pH/LF12 complete with a suitable pH combination electrode and conductivity sensor. The handylab multi 12 additionally in-cludes an oxygen sen-sor. Measurement parameters The measurement parameters pH, re-dox potential, temperature and con-ductivity means that the handylab pH/ LF 12 has a variety of uses. The handy-lab multi 12 can also be used to measu-re the oxygen concentration in solu-tions. Measurement memory and interface As a set The meters have a data memory, which means that measurements can be sa-ved manually or automatically by using a timer control, and evaluated later on. Both meters have a serial RS-232 inter-face (bi-directional) for data transfer purposes. The handylab pH/LF 12 and handylab multi 12 multi-parameter meters are available as a complete set in a carrying case with all of the requisite sensors, ca-libration and maintenance accessories. With the set, you can get to work im-mediately. The special AutoRead function, which can be additionally activated, serves to monitor the drift of the combination electrode. The measured value is only released when the stability criteria are fulfi lled. This ensures the reproducibili-ty of measurement results. Measurement reliability For calibration of the pH measurement, there is a one or two point calibration with technical buffers. For calibration of the conductivity sensor and the oxygen sensor, if needed, there is an automatic calibration function. After automatic calibration, a sensor symbol indicates the status of the calibrated sensor. The adjustable calibration timer can remind the user that calibration is due to be performed. Calibration
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