Hanna Instruments Portable Waterproof pH Meter - Manuals

2 3 Dear Customer,Thank you for choosing a Hanna Product.Please read this instruction manual carefully before using the instrument.If you require further technical information, do not hesitate to e-mail us at t e c h @ h a n n a i n s t . c o m . This instrument is in compliance with the directives....

4 5 1) Battery cover2) DIN connector for electrode3) Offset calibration trimmer4) Slope calibration trimmer5) Temperature calibration trimmer6) Mode indicator7) Liquid Crystal Display8) ON/OFF key, to turn the meter on or off 9) RANGE key, to visualize the temperature HI 9210NATCpH METER ON/OFF RANG...

6 7 For best accuracy, it is recommended to calibrate the instrument frequently.In addition a pH calibration should be performed: a) Whenever the pH electrode or the batteries are replaced b) At least once a month c) After testing aggressive chemicals d) When extreme accuracy is required PREPARATION...