<prompt> Yard-stick of detection in Snyders test is:Acid formationpH changeCount of microorganismsEnamel solubility  <response>: Snyders test uses Bromocresol green as an indicator, which is blue-green at pH 5.4 or above and turns yellow at pH 3.8 or less. The critical pH for enamel dissolution is 5.4-5.5.Therefore, it would be more appropriate to use an indicator such as Bromocresol purple, which is purple at pH 6.8 and yellow at pH 5.2.Soben Peter 5th editionPage number 434 