Revised Standard from Last Update.

1. SCOPE

This standard IS 101 (Part 8/Sec 5) prescribes methods of test for lead restriction in paints and allied products. For lead restriction test any one of the following five methods may be used:

a) Electrolysis method;

b) Molybdate method;

c) Sulphide method;

d) Atomic Absorption Spectroscopy method (AAS); and

e) Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES).

NOTES

1 For estimation of lead content of samples ranging below 1 000 ppm the atomic absorption spectroscopy or ICP-OES method should be used exclusively. First three methods are not applicable for determining trace quantities of lead.

2 Electrolysis Method shall be used as a referee method in case of any dispute, if the lead content more than 1 000 ppm and ICP-OES method shall be used as a referee method in case of any dispute if the lead content less than equal to 1 000 ppm.

2. REFERENCES

101 (Part 8/Sec 2) : 1990 Methods of sampling and test for paints, varnishes, and related products: Part 8 Tests for pigments and other solids, Section 2 Pigments and nonvolatile matter (third revision)

1070 : 1992 Reagent grade water - Specification (third revision)

264 : 2005 Nitric acid - Specification (third revision)

265 : 2021 Hydrochloric acid - Specification (fifth revision)