202 Eagles Landing Pkwy
Stockbridge, GA 30281
(+1) 470 777 2649
Mo-Fr 8 am - 7 pm (EST)
Strips, pH range 2 to 9, pH indicators and test papers Universal indicator papers have been impregnated with a mixture of several indicators. On contact with the sample solution they assume a particular color. A check against the supplied color comparision table allows the pH to be determined.
Here you can find the certificate: https://www.gelifesciences.com/en/de/support/quality/certificates