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TABLE OF CONTENTS
1. PRELIMINARY EXAMINATION ...................................................................................................................................4
2. INSTRUMENT OVERVIEW ..........................................................................................................................................5
3. SPECIFICATIONS .............................................................................................................................................................6
4. FUNCTIONAL & DISPLAY DESCRIPTION ............................................................................................................8
5. GENERAL OPERATIONS .............................................................................................................................................12
5.1. BATTERY MANAGEMENT ................................................................................................................................12
5.2. CONNECTING THE ELECTRODE & TURNING THE METER ON ...................................................12
5.3. OPERATION OVERVIEW ..................................................................................................................................12
6. SETUP .................................................................................................................................................................................14
6.1. GENERAL SETUP .................................................................................................................................................14
6.2. MW151 SPECIFIC SETUP ................................................................................................................................18
7. pH ........................................................................................................................................................................................20
7.1. pH PREPARATION ................................................................................................................................................20
7.2. pH CALIBRATION ................................................................................................................................................20
7.3. pH MEASUREMENT ..........................................................................................................................................22
7.4. WARNINGS & MESSAGES ...........................................................................................................................24
8. ELECTRODE CONDITION & MAINTENANCE .................................................................................................. 27
9. ORP .....................................................................................................................................................................................30
9.1. PREPARATION ......................................................................................................................................................30
9.2. ORP CALIBRATION ...........................................................................................................................................30
9.3. ORP MEASUREMENT ......................................................................................................................................30
10. LOGGING (MW151) .....................................................................................................................................................31
10.1. TYPES OF LOGGING .........................................................................................................................................31
10.2. DATA MANAGEMENT .....................................................................................................................................33
11. MEM & MR FUNCTIONS (MW150) .....................................................................................................................38
12. GLP ....................................................................................................................................................................................39
13. TROUBLESHOOTING ..................................................................................................................................................41
14. ACCESSORIES..............................................................................................................................................................42
CERTIFICATION ..................................................................................................................................................................43
RECOMMENDATION ........................................................................................................................................................43
WARRANTY ..........................................................................................................................................................................43