pH paper trumps expensive kits in measuring acidity.
Willyard
Cassandra
C
D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents / Q000191:economics*; D011934:Reagent Strips / Q000191:economics; D014454:Uganda; D014621:Vagina / Q000378:metabolism*; D016585:Vaginosis, Bacterial / Q000175:diagnosis*
D007202:Indicators and Reagents; D011934:Reagent Strips