Apera Instruments 28APE190350/AI31020, User Manual, Page: 2 / 15

1
Content
1 Main Features ................................................................................................................ 1
2 Preparation Before First Use .......................................................................................... 3
3 pH Calibration ................................................................................................................. 3
4 pH Measurement ............................................................................................................ 4
5 Measure Soil pH Directly ................................................................................................ 5
6 Making a Soil Slurry ........................................................................................................ 6
7 Other Functions .............................................................................................................. 6
8 Probe Cleaning ............................................................................................................... 7
9 Probe Storage ................................................................................................................ 7
10 Battery Replacement ...................................................................................................... 8
11 Probe Replacement ........................................................................................................ 8
12 Notes .............................................................................................................................. 8
13 Troubleshooting Guide ................................................................................................... 9
14 Technical Specs ............................................................................................................11
15
What’s in the box ...........................................................................................................12
16 Accessories ...................................................................................................................12
17 Warranty ........................................................................................................................12
Thank you for choosing the Apera GroStar™ GS2 Premium pH Pen Tester. This
premium pen has been designed specifically for the horticultural market. Since 1991,
Apera instruments has been dedicated to providing hi-tech, accurate, lab-grade
instruments and sensors. GroStar's intelligent design reduces the guesswork, so you
can easily manage your crops success.
1 Main Features
•
The Swiss LabSen® Spear soil pH probe provides accurate results with minimal
maintenance in soil pH test
•
Easy to use design and quick two-point calibration adjustment
•
3-Color backlit LCD screen gives you clear readings in different modes even in dark
environment
•
Durable structure, IP67 waterproof rating, powered by AAA batteries
•
The probe is replaceable, so you don't have to discard the entire pen when the probe
reaches its end of life