Adopts ISO 11794:2010 to set out the basic methods for sampling particulate material that is mixed with a liquid, usually water, to form a slurry. In industry and in the mining and mineral processing literature, slurry is also referred to as pulp, but this term is not used in this standard. At very high ratios of fine particulate solids to liquids where material assumes a soft plastic form, the mixture is correctly termed as a paste. Sampling of pastes is not covered in this standard.
Table of contents
Header
About this publication
Preface
1 Scope
2 Normative references
3 Terms and definitions
4 Principles of sampling slurries
4.1 General
4.2 Sampling errors
4.2.1 General
4.2.2 Preparation error, PE
4.2.3 Delimitation and extraction errors, DE and EE
4.2.4 Weighting error, WE
4.2.5 Periodic quality-fluctuation error, QE3
4.3 Sampling and total variance
4.3.1 Sampling variance
4.3.2 Total variance
4.3.3 Sampling-stage method of estimating sampling and total variance
4.3.4 Simplified method of estimating sampling and total variance
4.3.5 Interleaved sample method of measuring total variance
5 Establishing a sampling scheme
6 Minimization of bias and unbiased increment mass
6.1 Minimization of bias
6.2 Volume of increment for falling-stream samplers to avoid bias
7 Number of increments
7.1 General
7.2 Simplified method
8 Minimum mass of solids contained in lot and sub-lot samples
8.1 Minimum mass of solids in lot samples
8.2 Minimum mass of solids in sub-lot samples
8.3 Minimum mass of solids in lot and sub-lot samples after size reduction
9 Time-basis sampling
9.1 General
9.2 Sampling interval
9.3 Cutters
9.4 Taking of increments
9.5 Constitution of lot or sub-lot samples
9.6 Division of increments and sub-lot samples
9.7 Division of lot samples
9.8 Number of cuts for division
10 Stratified random sampling within fixed time intervals
11 Mechanical sampling from moving streams
11.1 General
11.2 Design of the sampling system
11.2.1 Safety of operators
11.2.2 Location of sample cutters
11.2.3 Provision for duplicate sampling
11.2.4 System for checking the precision and bias
11.2.5 Avoiding bias
11.3 Slurry sample cutters
11.3.1 General
11.3.2 Falling-stream cutters
11.3.3 Cutter velocities
11.4 Mass of solids in increments
11.5 Number of primary increments
11.6 Routine checking
12 Manual sampling from moving streams
12.1 General
12.2 Choosing the sampling location
12.3 Sampling implements
12.4 Mass of solids in increments
12.5 Number of primary increments
12.6 Sampling procedures
13 Sampling of stationary slurries
14 Sample preparation
14.1 General
14.2 Sample division
14.3 Sample grinding
14.4 Chemical analysis samples
14.5 Physical test samples
15 Packing and marking of samples
Annex A
A.1 Components of sampling error and sampling variance
