2TABLE OF CONTENTSPRELIMINARY EXAMINATION .............................................................................................. 3GENERAL DESCRIPTION ...................................................................................................... 4ABBREVIATIONS ................................................................................................................ 4SPECIFICATIONS ................................................................................................................ 5PRECISION AND ACCURACY ................................................................................................. 5PRINCIPLE OF OPERATION .................................................................................................. 6FUNCTIONAL DESCRIPTION ................................................................................................ 7ERRORS AND WARNINGS .................................................................................................. 9GENERAL TIPS FOR AN ACCURATE MEASUREMENT ........................................................... 11STARTUP...................................................................................................................12MEASUREMENT PROCEDURE ........................................................................................... 12VALIDATION PROCEDURE ................................................................................................. 15CALIBRATION PROCEDURE ............................................................................................... 17GLP...........................................................................................................................20BATTERY MANAGEMENT .................................................................................................. 21BATTERY REPLACEMENT .................................................................................................. 22ACCESSORIES ................................................................................................................. 22WARRANTY ................................................................................................................. 23Dear Customer,Thank you for choosing a Hanna product. This manual will provide you with the necessaryinformation for the correct use of the instrument. Please read it carefully before using the meter. Ifyou need additional technical information, do not hesitate to e-mail us at tech@hannainst.com.This instrument is in compliance with directives.All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner,Hanna Instruments Inc., Woonsocket, Rhode Island, 02895 , USA.