Determination of certain substances in electrotechnical products - Hexavalent chromium. Determination of hexavalent chromium (Cr(VI)) in polymers and electronics by the colorimetric method1 Scope This part of IEC 62321 describes procedures to measure hexavalent chromium, Cr(VI), quantitatively in samples of polymers and electronics. This method employs organic solvent to dissolve or swell the sample matrix, followed by an alkaline digestion procedure to extract Cr(VI) from samples. Studies have shown that organic alkaline solution is more effective than acidic solution in extracting Cr(VI) from soluble and insoluble samples. Minimal

BS EN 3475-403 covers the preparation of specimens

Who is ISO 6707-1 for

A3 and A4 correspond to 1

BS EN 4701-001 is the first part of a multi-part series that specifies the general characteristics

industrial power control systems

ISO 16820 provides you with test methods and procedures to characterize and measure sensory attributes of consumer products

lamps and controlgear is given in IEC 62504

adhesion test for leaded light strip desiccant

the cable under test is connected to a specific current loop arrangement

It establishes specifications for data exchange between any two instances of the following actors:

BS EN 3020 on self-locking plate nuts for the use in aerospace industry is useful for the

This is a full revision and introduces the following principal changes: