Archive image from page 258 of Dairy chemistry; a practical handbook. Dairy chemistry; a practical handbook for dairy chemists and others having control of dairies dairychemistryp00rich Year: 1920 REICHERT-WOLLNY PROCESS. 243 phenol-phthalein for this purpose soon became apparent to many. N To the number of cubic centimetres of — alkali used one-tenth is added. 10 Reichert - Wollny Process. — Wollny, in a now classic memoir, studied the errors of the Reichert-Meissl process ; these are :— (1) Error due to the absorption of carbonic acid during the saponification (may amount to + 10 per cent.

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Archive image from page 258 of Dairy chemistry; a practical handbook. Dairy chemistry; a practical handbook for dairy chemists and others having control of dairies dairychemistryp00rich Year: 1920 REICHERT-WOLLNY PROCESS. 243 phenol-phthalein for this purpose soon became apparent to many. N To the number of cubic centimetres of — alkali used one-tenth is added. 10 Reichert - Wollny Process. — Wollny, in a now classic memoir, studied the errors of the Reichert-Meissl process ; these are :— (1) Error due to the absorption of carbonic acid during the saponification (may amount to + 10 per cent.). (2) Error due to the formation of esters during saponification (may amount to — 8 per cent.). Fig. 32.—Caustic Soda Apparatus. (3) Error due to the formation of esters during the distillation (may amount to — 5 per cent.). (4) Error due to the cohesion of the fatty acids during distil- lation (may in extreme cases amount to — 30 per cent.).

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