Nitrazine pH Phenaphthazine Paper
Accutest® brand nitrazine indicator paper is the economical choice among FDA-listed medical pH test products for the in-vitro determination of body-fluid pH in the 4.5–7.5 range. It is widely used in hospitals and doctors’ offices to detect the presence of amniotic fluid in vaginal secretions during late-term pregnancy, a sign of premature amniotic sac rupture.