BS 3900-B6:1986

This standard BS 3900-B6:1986 Methods of test for paints. Tests involving chemical examination of liquid paints and dried paint films is classified in these ICS categories:

• 87.040 Paints and varnishes

This part of ISO 3856 describes two methods for the determination of the lead content of the test solutions, prepared according to ISO 6713 or other suitable International Standards.

The methods are applicable to paints having “soluble” lead contents in the range of about 0,05 to 5 % (m/m).

The flame atomic absorption spectrometric (AAS) method (clause 3) should be used as the referee method in cases of dispute. Other methods can be used by agreement between the interested parties. If a spectrophotometric method is agreed, the dithizone spectrophotometric method (clause 4) should be used.

Atomic absorption spectrometric and spectrophotometric methods; range 0.05 to 5% (m/m); extracts prepared as described in Part B5. (See Part B3 for similar method for liquid paints).