![Case of 24 - Calibration Solution | 250ml 7.0 + 4.0](http://www.nutetools.com/cdn/shop/products/CalibrationSolution2.0_41092d49-d52f-4cd5-ae57-caea8d8c355a_{width}x.jpg?v=1666110555)
This bundle comes with the following:
12 - 250ml 7.0 buffer solution
12 - 250ml 4.0 buffer solution
Solution is compatible with any digital pH pen that calibrates to 7.0 and 4.0.
Ingredients: Potassium Hydrogen Phthalate
This bundle comes with the following:
12 - 250ml 7.0 buffer solution
12 - 250ml 4.0 buffer solution
Solution is compatible with any digital pH pen that calibrates to 7.0 and 4.0.
Ingredients: Potassium Hydrogen Phthalate