I.S. ISO 1988:1987

1 Scope and field of application
2 Introduction
3 Fundamentals of sampling
4 Sampling from a stream of coal
5 Sampling from wagons
6 Sampling from ships
7 Sampling from stockpiles
8 Sample preparation for determination of total moisture
9 Sample preparation for general analysis
Annexes
A Sampling equipment
B Example of instruction to sampling operators
C Methods of checking precision by means of replicate
  sampling
D Methods of checking sampling preparation errors
E Method of testing for bias
F Theory of calculation of number of increments from
  experimental data
G Theory of replicate sampling
H Theory of checking sample preparation errors

Specifies methods of sampling hard coal, for both routine and special purposes, to provide samples for general analysis and for the determination of total moisture. It also outlines the principles to be taken into consideration when taking the sample and preparing it for analysis.