PH Meter Calibration - (Jan/26/2006 )

Dear Friends

We have PH Meter in lab and we dont know , How to calibrate this. Its from Hanna company and model is HI 8520. Its automatic and we are in really trouble coz we lost its manual book.

Have a look here: http://www.hannainst.com/downloads/instr/MANPHBNR3.pdf