PH test paper 1-14, two color

PH test paper 1-14, two color
PH1-11 (5M/ROLL)
PH12.0-14.0(5M/ROLL)
Method of application
1.    Dip test strip into solution, for roughly three seconds.
2.    Compare indicator zone to colour scale and read off printed PH value. By holding strip against light, the PH determination may be facilitated.

Warning:
1.    Test paper should be put in a safe condition and it will lose efficacy in advance because of any chemical gas, over 70% air humidity and strong illumination.
2.    Do not touch oral cavity with it directly.
3.    It is harmless to environment and could be disposed as municipal waste.