It is recommended to store the electrode in electrode storage solution and calibrate the meter regularly with calibration buffers (not included) – 
- Waterproof
- One-Touch Auto-Calibration
- Up to 3 point cal 4,7,10
- Cal values adjustable
- Data Hold Function
- Auto Power-Off
These convenient and portable pen-style pH meters are designed for fast and accurate pH measurements in any environment. Choose from three models to fit your application. Each unit includes a one-touch calibration feature at 3 points and a waterproof rating to IP65. They fit comfortably in your hand and conveniently store away in your shirt pocket.
8680 - Simple to use and waterproof. Includes data hold, one-touch auto-calibration at 4, 7, and 10 pH, and auto power-off.
Important to Know:
- 1. The electrode should be soaked in electrode storage solution before the first use.
- 2. The electrode should be stored with solution in the cap.
- 3. If unused for an extended period of time, the electrode needs to be rehydrated.
- 4. It is recommended to calibrate the meter regularly with calibration buffers.
Download 8680/8681/8682 Operating Instructions
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Why did you choose this?
Have a brewing friend that really needs to check his pH.
Waterproof
Saw it on a YouTube video
To get accurate pH readings for hydroponic gardening and swim spa maintenance.