General methods of test for pigments and extenders - Comparison of lightening power of white pigments Ingestion-build-81111 The dissipation of imposed head

The dissipation of imposed head is recorded as a function of time

BS EN 16636 is a European standard covering requirements and competences for Pest management services

Both un-braced and braced systems are included

It applies to all the railway organisations and partners concerned with technical documents and to suppliers preparing documents on behalf of railway companies or railway network users

Contents of BS ISO 27956:

General methods of test for pigments and extenders - Comparison of lightening power of white pigments Ingestion-build-81111 The dissipation of imposed headWhat is this standard about? This part of ISO 787 specifies a general method of test for comparing the lightening (reducing) power of a white pigment with the lightening power of an agreed sample of the same type. Two procedures (A and B) are described. Procedure A is quicker than procedure B and is suitable for testing one sample of pigment; procedure B is better for testing several samples, and especially if a pigment of unknown lightening power is