Rubber, raw natural. Determination of plasticity retention index (PRI)1 Scope This document specifies a method for determining the plasticity retention index (PRI) of raw natural rubber. The PRI is a measure of the resistance of raw natural rubber to thermal oxidation. A high resistance to thermal oxidation is shown as a high value of the index. PRI is not an absolute value and cannot give an absolute classification of plasticity number of different natural rubber after oxidation.

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TTP operators and enterprise users to select those TTP services needed for particular requirements

The IPI-IIF is applicable to image interchange in and among different application domains

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Its key provisions are that it:

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BS EN 60076-14 applies to liquid-immersed power transformers employing either high temperature insulation or combinations of high-temperature and conventional insulation

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Why should you use BS EN 2591-512 - Method of verifying the effectiveness of non-removable fixing

BS EN 10246-3

BS EN 2591-603 on the method of detecting changes in the power distribution when using optical elements is useful for:

In particular the standard will be valuable in the inspection of: