General methods of test for pigments and extenders - Comparison of lightening power of white pigments Ingestion-build-81111 and provide aviation

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The description of the electromagnetic environments has been improved

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

BS EN 1642 is the British Standard that specifies the general requirements for dental implants and accessories

explanatory notes

General methods of test for pigments and extenders - Comparison of lightening power of white pigments Ingestion-build-81111 and provide aviationWhat 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