NS EN 237 : 2ED 2004

Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents and materials
5 Apparatus
6 Sampling
7 Procedure
   7.1 General preparation
   7.2 Preparation of calibration solutions (0,25 mg/l,
        0,50 mg/l, 0,75 mg/l, and 1,0 mg/l of lead)
   7.3 Preparation of the test solution
   7.4 Preparation of instrument
   7.5 Determination
8 Calculation
9 Expression of results
10 Precision
   10.1 General background
   10.2 Repeatability, r
   10.3 Reproducibility, R
11 Test report
Annex A (informative) Alternative procedure
Bibliography

Describes an atomic absorption spectrometric test method for the determination of the lead content of petrol in the range 2,5 mg/l to 10,0 mg/l. This test method is independent of the lead alkyl type.