BS 5660-2:2001

Contents
1 Scope
2 Normative references
3 Definitions
4 General considerations for sampling
   and sample preparation
   4.1 Basic requirements
   4.2 Establishing a sampling scheme
   4.3 System verification
5 Fundamentals of sampling and sample
   preparation
   5.1 Minimization of bias
   5.2 Overall precision
   5.3 Quality variation
   5.4 Sampling precision and number
        of primary increments
   5.5 Precision of sample preparation
        and overall precision
6 Methods of sampling
   6.1 Mass basis sampling
   6.2 Time basis sampling
   6.3 Stratified random sampling within
        fixed mass or time intervals
7 Sampling from moving streams
   7.1 General
   7.2 Safety of operations
   7.3 Robustness of sampling installation
   7.4 Versatility of sampling system
   7.5 Primary samplers
   7.6 Secondary and subsequent samplers
   7.7 On-line sample preparation
   7.8 Checking precision and bias
   7.9 Cleaning and maintenance
   7.10 Example of a flowsheet
8 Sampling from stationary situations
   8.1 General
   8.2 Sampling from wagons
   8.3 Sampling from ships, stockpiles
        and bunkers
9 Stopped-belt reference sampling
10 Sample preparation
   10.1 Fundamentals
   10.2 Method of constituting partial
        samples or a gross sample
   10.3 Mechanical methods of division
   10.4 Manual methods of division
   10.5 Preparation of sample for size
        determination
   10.7 Preparation of test sample for
        chemical analysis
   10.8 Example of sample preparation
        process
11 Packing and marking of sample
Annex A (informative) Checklist for
        mechanical sampling systems
Annex B (normative) Equation for number
        of increments
Annex C (informative) Alternative method of
        taking the reference sample
Annex D (normative) Procedure for
        determining the minimum mass
        of divided gross sample for size
        determination using other
        mechanical division methods
Annex E (normative) Riffle dividers
Bibliography