Nitrazine yellow paper, pH: 6.0 - 7.0 (Box of 200 test strips)

• Yellow paper which changes to blue when the pH exceeds 6 towards alkaline conditions (greyish blue at pH 7, blue at pH >?8), e.g. for neutralization analyses

• Color change (pH): yellow-blue to violet

• Length: 70mm

• Width: 20mm