Transfer an accurately weighed amount of powder obtained from 10 tablets into a 100 cm3 volumetric flask, dissolve and make up to the mark with the (0.18 mol/dm3) alanine solution. Filter and dilute a suitable aliquot of the filtrate to 50 cm3 with the stabilizer solution. Take an aliquot of the final solution and determine the ascorbic acid content as described under general procedure.