The sample is then transferred to a hot plate set at 95 o C until reaction the ceases. The potential acidity released during reaction with hydrogen peroxide is then titrated with 0.02 to 0.05 N NaOH to a pH of 7. Potential acidity is reported as tons of CaCO 3 equivalents per 1000 lbs of mine spoil. Back to Top Greenhouse Media Greenhouse media is analyzed as-received. Approximately 200 cm3 of the media is addition to a beaker.
Water is added slowly to the sample to create a saturated paste.
After enough water is added to create a paste, the mixture is left to stand for 1 hour. The pH of the mixture is determined with a glass electrode. The paste is left to stand another hour. The paste is then filtered via vacuum pressure using a Buchner funnel. Electrical conductivity of the solution is determined via a conductivity bridge and a conductivity cell.