Contents page
Features 2
Bluelab Combo Meter 2
Introduction 3
Preparing for use 3
Calibration 4
Changing nutrient and
temperature display units 6
Measuring hydroponic
elements 7
Battery replacement 7
Cleaning the conductivity/
temperature probe 8
Cleaning the pH probe 9
Hydrating the pH probe 10
Storing the Bluelab
Combo Meter 10
Error messages 11
Technical speci cations 11
Troubleshooting guide 12
Bluelab pH Probe replacement 13
Bluelab probe care 13
Product guarantee 14
Limitation of liability 14
Contact details 14
Care and use guide
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