Bluelab pH Pen 716480
- The tester is made of high quality electronic components to ensure high accuracy..
- The resolution of ORP tester is 1 mv, very high sensitivity..
- Suitable for water sources, aquariums, hydroponics, swimming pools and other water systems..
- Compact and portable pen design,easy to operate and storage..
- Large and clear LCD, easy to read and accurately measuring functions..