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SN/T 1541-2005: Inspection of the total residues of dithiocarbamate pesticides in tea for export
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 1541-2005 | English | 419 |
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Inspection of the total residues of dithiocarbamate pesticides in tea for export
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SN/T 1541-2005
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Basic data | Standard ID | SN/T 1541-2005 (SN/T1541-2005) | | Description (Translated English) | Inspection of the total residues of dithiocarbamate pesticides in tea for export | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X55 | | Classification of International Standard | 67.140.10 | | Word Count Estimation | 13,123 | | Date of Issue | 2005-02-17 | | Date of Implementation | 2005-07-01 | | Regulation (derived from) | Industry standard filing Notice 2005 No. 4 (No. 64 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China | | Summary | This standard specifies the export of tea dithiocarbamate total residues of sampling, sample preparation and gas chromatographic method. This standard applies to exports of tea dithiocarbamate pesticides such as thiram, ziram, ferbam, zineb, on behalf of the total residues Senna inspection. | SN/T 1541-2005: Inspection of the total residues of dithiocarbamate pesticides in tea for export---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.
Inspection of the total residues of dithiocarbamate pesticides in tea for export
Book of the People's Republic of China Entry and Exit Inspection and Quarantine
Dithiocarbamate in tea leaves
Total residue test method
Released on.2005-02-17
2005-07-01 implementation
People's Republic
The General Administration of Quality Supervision, Inspection and Quarantine issued
Foreword
Appendix A of this standard is an informative annex.
This standard is proposed and managed by the National Certification and Accreditation Administration.
This standard was drafted. Xiamen Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China.
The main drafters of this standard. Chen Luxing, Zou Wei, Wu Min, Zhou Wei.
This standard is the first industry standard for entry-exit inspection and quarantine.
Dithiocarbamate in tea leaves
Total residue test method
1 Scope
This standard specifies the sampling, sample preparation and gas chromatographic determination methods for the total residue test of dithiocarbamate in exported tea.
This standard applies to dithiocarbamate pesticides such as thiram, thiram, thiram, dexame sulphate, and dexame sodium in exported tea.
Inspection of total residue.
2 sampling and sample preparation
2.1 Inspection lot
With no more than 2,000 pieces as one inspection lot, the goods of the same inspection lot shall have the same characteristics, such as packaging, marking, origin, specifications and etc.
Level and so on.
2.2 Number of samples
The number of samples is shown in Table 1.
Table 1 The sampling quantity unit is
Batch minimum sample size
1~5 1
6 to 50 2
51～500 11
501~1000 16
1001～1500 17
1501～2000 18
2.3 Sampling tools
a) sampling spoon;
b) plastic cloth;
c) the sample plate;
d) Sample holder. a sealable sample cylinder or a polyethylene plastic bag.
2.4 Sampling methods
The specified number of tea leaves are randomly selected from different parts of the whole batch of products, and the tea leaves are opened and poured out one by one.
On vinyl plastic cloth. A representative sample was taken by sampling, approximately 500 g each. Concentrate and fully mix the sample and repeat the quadruple method to
About 500g. Place the sample in a clean, dry sample cylinder, seal it, mark it, and send it to the laboratory in a timely manner.
2.5 Sample preparation
The retrieved samples were ground to full pass through a 20 mesh screen. Mix and divide into two parts, respectively, into a clean container, as a sample, sealed,
Mark the mark.
2.6 Sample storage
Store the sample at 4 ° C or less and store it in the dark.
Samples should be protected from contamination or changes in residue levels during sampling and sample preparation operations.
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