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(a) a glass column 1.5m long and 4mm in internal diameter packed with acid-washed, silanised diatomaceous  support (100  to 120) mesh coated with  3 per  cent w/w of cyanopropylmethyl phenylmethyl siliconc fluid(OV 225 is suitable),  and maintained at 160.
  
treat 0.1g of the substance being examined in a similar maner but omitting solution A;treat 0.1g of the substance being examined as described for solution(1)j.

[ Last edited by 393567489 on 2010-3-22 at 11:21 ]

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