ISO 10277-1995 PDF

Full title and description

ISO 10277:1995 — Aluminium ores — Experimental methods for checking the precision of sampling. This International Standard defines experimental procedures and test plans used to assess the precision (expressed as standard deviation) of sampling and sample-preparation methods applied to aluminium ores, in accordance with the sampling procedures given in ISO 8685.

Abstract

The standard specifies experimental methods for checking the precision of sampling of aluminium ores. It describes duplicate/replicate sampling plans, sample division and testing types (examples: type 1, type 2, type 3 division-testing), calculation methods to estimate standard deviations (including use of range-to-standard-deviation factors), and the minimum numbers of increments and samples required for valid precision checks. These procedures are intended to be used together with ISO 8685 (sampling procedures) and related preparation/heterogeneity standards.

General information

• Status: Withdrawn (recorded as withdrawn in ISO catalogue).
• Publication date: 15 March 1995 (1st edition, 1995).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 73.060.40 — Aluminium ores.
• Edition / version: Edition 1 (1995).
• Number of pages: 15 pages (pdf).

Scope

ISO 10277:1995 applies experimental test methods to check the precision of sampling procedures for aluminium ores. It sets out how to plan and carry out duplicate sampling experiments, how to divide gross samples, how to sequence and randomize tests, and how to calculate and interpret precision statistics (standard deviations) for sampling, sample preparation and measurement. The methods may also be used to check the precision of sample preparation (per ISO 6140) and to assess lot heterogeneity (per ISO 6139).

Key topics and requirements

• Designs for duplicate and replicate sampling experiments (plans for paired gross samples A and B and their subdivisions).
• Three division-testing types (type 1, type 2, type 3) describing how to divide and test gross samples to separate sampling, preparation and measurement variance components.
• Statistical treatment: use of ranges and factors to estimate standard deviation, calculation of mean absolute differences and standard deviations for sampling precision.
• Requirements for minimum numbers of increments and sample units consistent with ISO 8685 sampling plans.
• Procedures for randomization, test sequencing and reporting of results to allow reproducible precision estimates.

Typical use and users

Used by mining and mineral processing companies, laboratory quality-control personnel, sampling engineers, metrology and standards professionals, and researchers who need to verify or validate the precision of sampling and sample-preparation procedures for aluminium ores. Also used by national standards bodies and technical committees when establishing or comparing sampling procedures.

Related standards

Normative and related references commonly associated with ISO 10277:1995 include ISO 8685 (sampling procedures for aluminium ores), ISO 6139 (experimental determination of lot heterogeneity), and ISO 6140 (sample preparation). The standard was developed by ISO/TC 79/SC 12 (aluminium ores) and has appeared in national/adopted versions; some catalogues reference a later national adoption or related document (e.g., SIST ISO 10277:2000).

Keywords

Aluminium ores; sampling precision; experimental sampling methods; sample division; duplicate sampling; standard deviation; heterogeneity; sample preparation; ISO 8685.

FAQ

Q: What is this standard?

A: ISO 10277:1995 is an International Standard titled "Aluminium ores — Experimental methods for checking the precision of sampling" that gives experimental procedures for assessing sampling precision.

Q: What does it cover?

A: It covers planning and carrying out duplicate/replicate sampling experiments, sample division/testing types, statistical calculations (estimating standard deviation from ranges and paired differences), and reporting so that precision of sampling, preparation and measurement can be quantified.

Q: Who typically uses it?

A: Mining and mineral-processing companies, laboratory QA/QC staff, sampling engineers, testing laboratories, and standards bodies involved in sampling methodology for aluminium ores.

Q: Is it current or superseded?

A: ISO 10277:1995 is listed in the ISO catalogue as Withdrawn (the record shows withdrawal in the ISO lifecycle); some national bodies list later national/adopted versions (for example a 2000 national adoption is referenced in bibliographic records). Users should consult the ISO catalogue or their national standards body for the currently recommended method or any direct replacement.

Q: Is it part of a series?

A: It is associated with a family of aluminium-ores sampling and sample-preparation standards (for example ISO 8685, ISO 6139, ISO 6140) developed under ISO/TC 79/SC 12. It is not a multi-part ISO series by itself but is part of the broader set of standards covering sampling and preparation of aluminium ores.

Q: What are the key keywords?

A: Aluminium ores; sampling precision; experimental methods; duplicate sampling; sample division; standard deviation; heterogeneity.