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Saponification value indicates KOH/NaOH needed to saponify 1g of fat. Higher SV means lower fatty acid chain length and lighter triglycerides. Sample treated with alkali for 30 minutes under reflux. Phenolphthalein indicator used to measure KOH consumption
Calculator determines solid (NaOH) or liquid (KOH) soap recipes. Supports up to 10 fats and oils with weights or percentages. Default superfatting level is 5%, adjustable up to 10%. Recommended water/lye ratio is 2/1 for hard soap, 3/1 for liquid
Saponification converts fats into soap using aqueous alkali. Process involves ester cleavage with NaOH to form alcohol and carboxylic acid. Ethanol helps dissolve nonpolar fats for reaction
Soap making dates back to ancient Babylon 4,800 years ago. Bristol became soap production centre in 12th century England. Gladstone repealed soap tax in 1853, improving industry. Soap became fashionable in 1700s, initially used by wealthy class
Saponification value indicates the amount of NaOH needed to make soap from one gram of fat. Also known as saponification number or Koettstorfer number. Measured in milligrams per gram (mg/g)