pH test strips, PEHANON 2.8 to 4.6 (Box of 200 test strips)

• Unify pH indicator and reference color chart on one strip

• Any sample color has the same effect on both, the reference colors and the reactive pad, allowing unadulterated pH reading even in colored solutions

• Gradation (pH): 2.8 - 3.1 - 3.4 - 3.6 - 3.8 - 4.0 - 4.3 - 4.6

• Length: 100 mm

• Width: 11 mm