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1st 1st 1st anion black into suspension boiled distilled water borax brass cage carry carbon black cent centrations Chem cleansing action cloth was rinsed concen concentration of hydrogen concentration of soap contained 1.25 grams decrease detergent effect detergent power determined diameter dilute hydrochloric acid diluted solution disk dissolving dry cells evaporated to dryness glass greatest detergent action huiliers hydrochloric acid hydrogen ion concentration increase the detergent liters of boiled logarithms manganese dioxide measured o/o soap solution oer Liter optimum concentration plates platinum potassium chloride Rhodes and Brainard sample shown sise Sodium Borate sodium carbonate sodium hydroxide sodium phosphate sodium silicate soil solution soiled cloth solution of soap solution of sodium solution prepared solution which contained Standard soiled standard solution stock solution surface tension titration Trisodium phosphate washing solution