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SN/T 4111-2015: Methods for sampling and preparing sample of copper ores for import
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| SN/T 4111-2015 | English | 229 |
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Methods for sampling and preparing sample of copper ores for import
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SN/T 4111-2015
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Basic data | Standard ID | SN/T 4111-2015 (SN/T4111-2015) | | Description (Translated English) | Methods for sampling and preparing sample of copper ores for import | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | D40 | | Classification of International Standard | 73.060 | | Word Count Estimation | 10,192 | | Date of Issue | 2015-02-09 | | Date of Implementation | 2015-09-01 | | Quoted Standard | GB/T 2007.3; GB/T 2007.4; SN/T 2720; SN/T 2726; SN/T 3519 | | Regulation (derived from) | State-Quality-Inspection-Accreditation [2015] 59 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the import copper ore sampling and sample preparation methods. This standard applies to import copper ore and the chemical composition of the water used to take the sample preparation and measurement. | SN/T 4111-2015: Methods for sampling and preparing sample of copper ores for import---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Imports of copper ore sampling and sample preparation method)
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Imports of copper ore sampling and sample preparation methods
Issued on. 2015-02-09
2015-09-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard is mainly drafted by. People's Republic of China Anhui CIQ, People's Republic of China Fujian Entry-Exit Inspection and
Quarantine Bureau.
The main drafters of this standard. Li Dejun, Wang Wei, Ma Hongyan, Sun Zhian, Jiang Zhaoxing, Lim.
Imports of copper ore sampling and sample preparation methods
1 Scope
This standard specifies the import copper ore sampling and sample preparation methods.
This standard applies to import copper ore and the chemical composition of the water used to take the sample preparation and measurement.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 2007.3 minerals in bulk sampling, test methods for sample preparation quality fluctuation General Evaluation
GB/T 2007.4 bulk minerals for sampling and sample bias General, Experimental methods for checking the precision
SN/T 2720 sampling bags minerals General
SN/T 2726 Test Mineral Terminology
SN/T 3519 container bulk ore sampling method
3 Terms and Definitions
Terms and definitions SN/T 2726 defined apply to this document.
4 Requirements
4.1 standard provides total precision βSPM sampling, sample preparation and measurement of different quantities of copper ore and sampling precision βS (percentage of Cu
Dollars), see Table 1.
Table 1 inspection lot different copper ore samples shall be taken as the minimum number of parts and precision β n
Test batch N/t
Quality fluctuations /%
small Medium Large
σW < 0.3 0.3≤σW < 0.6 σW≥0.6
βS /% βSPM /%
N≤30 8 16 32 0.31 0.40
30 \u003cN≤90 14 28 56 0.24 0.34
90 \u003cN≤150 18 36 72 0.22 0.33
Note. If the quality fluctuation is too large, can not meet the precision requirements, in accordance with the formula n = σWσS ()
Calculate the number of increments.
4.2 In accordance with the methods of sampling and sample preparation, checking the precision tests should be carried out according to need.
4.3 standard sampling methods listed in the first method is no system error method.
4.4 Analysis of the sample composition should keep more than six months to prepare for verification.
4.5 Sampling, sample preparation equipment and tools, Sheng sample containers must be kept clean, dry, and durable.
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