IS 326 : Part 19 : Sec 2 : 2018/ISO 7609 : 1985 Methods of Sampling and Test for Natural and Synthetic Perfumery Materials Part 19 Gas Chromatographic Analysis of Perfumery Materials Section 2 On capillary columns - General method
Reaffirmed 2022
NATIONAL FOREWORD
This Indian Standard (Part 19/Sec 2) (First Revision) which is identical with ISO 7609 : 1985 ‘Essential oils - Analysis by gas chromatography on capillary columns - General method’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Fragrance and Flavour Ingredients Sectional Committee and approval of the Petroleum, Coal and Related Products Division Council.
This standard was originally published in 1998 as IS 326 (Part 19) : 1998 which was common for both packed and capillary columns employed for use in the gas chromatography technique. Now the Committee has decided to undertake first revision of this standard by adopting ISO Standards available on the subjects as two different sections of IS 326 (Part 19) under dual numbering system. Consequently the designation and title of the standard has been modified. Other section of this standard is:
Section 1/ISO 7359 : 1985 On packed columns - General method
Gas Liquid Chromatography (GLC) is a form of chromatography which accomplishes the separation of a vapourizable sample by partitioning the sample between a mobile gas phase and a stationary liquid phase usually coated on a solid support. GLC is a fast, simple, accurate and ideal technique for analysis. It is of special value for both qualitative and quantitative analysis of mixtures containing organic compounds. It has gained importance in the analysis of natural and synthetic perfumerymaterials and essential oils which are complex mixtures of volatile terpenic compounds.
The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:
a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.
b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.