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Multi-Parameter portable meters with GLP functions handylab pH/LF12 and handylab multi12 Calibration For pH is a fully automatic one or two point calibration with technical buffers available. Conductivity and oxygen sensors can be calibrated using the calibration automatic. After automatic calibration, a sensor symbol signals the state of the calibrated sensor. The adjustable calibration timer can remind the user that calibration is due. The multi-parameter pocket meters handylab pH/LF12 and handylab multi12 in shockproof, water-tight casings are ideally suited for field work. Measurement parameters The measurement parameters pH, redox potential, conductivity and temperature means that the handylab pH/LF12 has a variety of uses. The handylab multi12 can also be used to measure the oxygen concentration in solutions. Measurement memory and interface The meters have a data logger which means that measurements can be recorded manually or automatically triggered by a timer and can then be evaluated at a later date. Both meters have a serial interface type RS 232 (bi-directional) to connect them to a computer. Measurement accuracy The additional special function AutoRead serves to monitor the drift of the sensor. The value is only released once it has reached the stability criteria. This enables the measured values to be reproduced. Power supply Both multi parameter pocket meters can be used for about 2500 hours independently of a mains supply using four commonly available batteries. When the batteries are changed, all calibration and memory data remains in the memory. If used with batteries, the display will indicate in plenty of time when the batteries are due to be changed. The meters can also be connected to the mains power supply using the optional power pack. Sensors We supply the handylab pH/LF12 set with suitable pH and conductivity sensors. The handylab multi12 set contains additionally an oxygen sensor. Ready to start The multi parameter pocket meters handylab pH/LF12 and handylab multi12 are available as a complete set with sensors, calibration and maintenance accessories all together in a case. Using this set you can start work immediately. 6
Pocket precision pH meter CG 837 CG 837 is a top quality pH meter in a practical pocket size. It is very handy, mobile size also means that it fulfil laboratory requirements. Handy and precise The case and shoulder strap as well as the necessary accessories makes the pH meter ideal for mobile use. Its high precision and small space requirement means that the meter is not only practical for field work but also a fully functional piece of laboratory equipment. User friendly The keys with their defined pressure point for accurate, precise operation have been clearly arranged on the spray-proof key pad and clearly labelled. Associated values such as pH value and temperature are displayed simultaneously. Calibration and temperature compensation have been automated. The “hold” key enables you to hold the last measurement value on the display. Very high accuracy The stable electronic engineering components guarantee the very high measurement accuracy of 0.01 pH. Redox potentials can be measured to an accuracy of 1mV. The microprocessor takes into account the temperature dependency of electrode and buffer solution when measurements are made using a temperature sensor. Faulty electrodes are recognized during calibration and an error message is displayed on the screen. Measurement ranges The CG 837 can be used to measure the pH value, redox potentials and temperature. The pH meter has been equipped with a recorder output for control measurements or for permanent monitoring. Temperature measurements If a combination electrode with an integrated temperature sensor is being used for measurements, both the temperature compensated pH values and the temperature are displayed on the screen immediately. If you are taking measurements without a temperature sensor the temperature can be entered manually. Simple calibration with great precision Calibration is very simple, very precise and accurate. The pH values of three buffer solutions including their temperature dependence have already been stored in the meter. There is an unmistakable separate key for every buffer, the meter itself recognizes whether the buffer solutions have been mixed up. The usual two point calibration or a one-point calibration as a fast method are available to choose from. The calibration data determined, the zero point and the slope are displayed. Power supply Thanks to modern microelectronic engineering technology the pH meter has only a very low power consumption so that a set of batteries is sufficient for 6 ,000 hours of operation. A reminder is displayed on the screen in time when the batteries need to be changed. If the meter is not being used, it switches off after 60 minutes. 7
Page 1 and 2: SCHOTT INSTRUMENTS METERS E pH mV
Page 3 and 4: Portable pH meters with GLP functio
Page 5: Portable oxygen meter with GLP func
Page 9 and 10: Technical data handylab LF11, handy
Page 11 and 12: Technical data O 2 sensor 9009/61 M
Page 13 and 14: Technical data CG 837 Parameters CG
Page 15: Multi-Parameter meters Type no. Ord

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