Total size by Soxhlet method

5 g of accurately weighed sample is extracted with chloroform in a Soxhlet extractor for about 1 h at a minimum rate of 100 drops per min. The sample is then dried in air and washed in hot water several times and then rinsed by hand 12 times. The material is then treated in 0.5% diastase solution (20 to 30 times the weight of cotton) at 70 C for Ih and then washed in hot running water, dried at 110 C and weighed. Side by side a sample is also tested for moisture determination. 

In the absence of unsized control, k may be taken as 3% of the desized and dried sample. No correction is required for bleached and dyed cloth. For total size content the ash content (%) of the desized sample is to be added. 

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