IS 101 : Part 2 : Sec 2 : 2025 Methods of Sampling and Test for Paints, Varnishes and Related Products - Part 2 Test on Liquid Paints (Chemical Examination) - Section 2 Determination of Non-Volatile Matter Content (ISO 3251 : 2019, MOD)
Revised Standard from Last Update.
NATIONAL FOREWORD
This Indian Standard (Part 2/Sec 2) (Fourth Revision) which is modified adoption of ISO 3251 : Paints '2019, varnishes and plastics - Determination of non-volatile-matter content' issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Paints, varnishes and related products Sectional Committee and approval of the Chemical Division Council.
IS 101 'methods of test for ready mixed paints and enamel'. Initially was published as a unified standard in 1950, it underwent revisions in 1961 and 1964 to update testing procedures. In 1986, due to the large size of IS 101, the committee decided to restructure it. Recognizing the need for clarity and organization, the standard was divided into multiple parts based on test types. These parts included tests on liquid paints (general and physical), chemical examination, film formation, optical assessments, and mechanical tests on paint film formation. Each part was further subdivided into sections, addressing specific tests within those categories. Further, it was decided that whenever a new test method introduced, it would be integrated into the relevant part of IS 101 where it is most appropriate, ensuring that the standard remained comprehensive.
In the third revision, the standard was published as IS 101 (Part 2/Sec 2) 'Methods of sampling and test for paints, varnishes and related products: Part 2 Test on liquid paints (chemical examination), Section 2 Volatile matter (third revision)' superseding 26 of IS 101 : 1964 'Methods of test for ready mixed paints and enamels (second revision)'.
This standard specifies method for determining the non-volatile-matter content and volatile matter content by mass in paints varnishes and related products.
In this fourth revision, the Committee, recognizing the significance of globally uniform practices, has decided to adopt ISO 3521 : 2019. Modifications have been made to align with the specific needs of the Indian paint industry, and these modifications are detailed in National Annex B.
This standard (Part 2/ Sec 2) is one of a series dealing with methods of sampling and test for paints, varnishes, and related products.
The other sections of this Indian Standard (Part 2) are:
Sec 1 Water content
Sec 3 Determination of volatile organic compound (VOC) content - Difference method
Sec 4 Determination of volatile organic compound (VOC) and or semi volatile organic compounds SVOC content gas-chromatographic
Sec 5 Determination of volatile organic compound content of low-VOC emulsion paints (In-Can VOC)
The text of ISO standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions and terminologies 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'; and
b) Comma (,) has been used as a decimal marker in the International Standard, while in Indian Standards, the current practice is to use a point (.) as the decimal marker.