नेपाल सरकार
नेपाल गुणस्तर तथा नापतौल विभाग
बालाजु, काठमाण्डौ, नेपाल

प्रकाशित मिति: 2018-07-04

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                            FILE  TITLE

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1.

 ISO/IEC /NS 17025  : General requirements for the competence of testing and calibration laboratories

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2

 ISO/NS 13909-4 :  Hard coal and coke —     Mechanical sampling —

Part 4:Coal — Preparation of test samples

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3

ISO/NS 562 : Hard coal and coke — Determination of

volatile matter

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