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SN/T 0800.1-2016 PDF English

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SN/T 0800.1-2016: Inspection of cereals, oils and feedstuffs for import and export - Methods of sampling and preparation of samples
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SN/T 0800.1: Historical versions

Standard IDUSDBUY PDFDeliveryStandard Title (Description)Status
SN/T 0800.1-2016185 Add to Cart Auto, 9 seconds. Inspection of cereals, oils and feedstuffs for import and export - Methods of sampling and preparation of samples Valid
SN/T 0800.1-1999145 Add to Cart Auto, 9 seconds. Inspection of cereals, oils and feedstuffs for import and export. Methods of sampling and preparation of samples Obsolete

Similar standards

GB/T 5519   LS/T 6103   SN/T 0800.10   

SN/T 0800.1-2016: Inspection of cereals, oils and feedstuffs for import and export - Methods of sampling and preparation of samples


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SN ENTRY-EXIT INSPECTION AND QUARANTINE INDUSTRY Replacing SN/T 0800.1-1999 Inspection of cereals, oils and feedstuffs for import and export - Methods of sampling and preparation of samples Issued on. MARCH 9, 2016 Implemented on. OCTOBER 1, 2016 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

Table of Contents

Foreword... 3 1 Scope... 6 2 Normative references... 6 3 Terms and definitions... 7 4 General... 7 5 Sampling and sample preparation tools and devices... 7 6 Sampling time, site... 11 7 Sampling methods... 11 8 Preparation of laboratory sample... 21 9 Number of sample... 23 10 Sample holding, identification and inspection... 23 11 Sampling report... 24 12 Specimen preparation... 24 Annex A (informative) Sampling tools... 27 Annex B (normative) Sample amount of inspection items of cereals, oils and feedstuffs... 30

1 Scope

This Part of SN/T 0800 specifies the methods of sampling and preparation of samples of inspection of cereals, oils and feedstuffs for import and export. This Part is applicable to the sampling and sample preparation for inspection of cereals, oils and feedstuffs for import and export.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 5494, Inspection of grain and oils - Determination of foreign matter and unsound kernels of grain and oilseeds GB/T 5502, Inspection of grain and oils - Determination of milling degree of rice GB/T 5524, Animal and vegetable fats and oils - Sampling GB/T 10361, Wheat rye and respective flours durum wheat and durum wheat semolina - Determination of the falling number according to Hagberg-Perten GB/T 15687, Animal and vegetable fats and oils - Preparation of test sample

3 Terms and definitions

For the purposes of this document, the terms and definitions defined in SN/T 0798 apply.

4 General

4.1 General provisions In accordance with the provisions of SN/T 0799. 4.2 Batches 4.2.1 Batches of cereals, oils and feedstuffs The requirements for batches are as follows. 4.2.2 Batches of grease The amount of grease delivered in a single contract or transport document.

5 Sampling and sample preparation tools and devices

5.1 Single tube sampler Applicable to the sampling of bagged cargo. There are three types that are commonly used. 5.2 Double-sleeve sampler and slot receiver Applicable to sampling of bulk static cargo. According to the actual loading transport tools, the size of the cargo, the storage of cargo, use double sleeve sampler of different specifications, length. 5.3 Sampling shovel The shovel length is about 13cm, the width is about 8cm, the side height is about 4cm, the handle length is about 8cm. See Figure A.1 of Annex A. 5.4 Automatic mechanical sampling device Applicable to dynamic cargo sampling. The device mainly consists of four parts. 5.5 Deep-layer sampler A semi-automatic sampling device that mainly consists of several connectable stainless steel sampling tubes, an electric suction host, sample collection device and base or strap, of which its sampling tube can be assembled to a length of about 30m as required to extract deep-layer sample of the cargo. 5.6 Other sampling tools 5.6.1 ellis cup A manual sampling device made of lightweight aluminum for drawing samples from cargo running on conveyor belts. 5.9 Sample dividing cloth or suitable bedding Plastic film or other material bedding for on-site sample processing. 5.10 Sample bag (tube) Container made of strong, hygienic material that can seal. 5.11 Bottom sampler This bottom sampler (see Figure A.2) is of stainless steel structure and is suitable for withdrawing bottom samples from liquid oil contained in tanks or oil tanks. 5.12 Simple counterweight sampling tank The simple counterweight sampling tank (see Figure A.3) is suitable for sampling at different depths in a variety of storage tank. 5.14 Tube sampler Applicable to sampling of paste grease. (See Figure A.5). It is a stainless steel device consisting of two concentric tubes of the same length and close together, one of which can rotate in the other tube. Each tube has a longitudinal opening. 5.15 Sampling probe Sampling probe (see Figure A.6) is used for stearin sampling. It is made of stainless steel, with semi-circular or C-shaped cross section. When it is twisted and inserted into grease, it shall obtain a sample of oil. 5.18 Sample bottle Plastic bottle or glass bottle, capacity of 250mL ~ 1000mL. 5.19 Stainless steel spoon Total length is 15cm ~ 20cm, handle length is 10cm ~ 15cm, the spoon is elongated and elliptical. 5.20 Other sampling and sample preparation tools and devices Other tools and devices for sampling and sample preparation.

6 Sampling time, site

6.1 Warehouse or storage tank sampling The cargos are stored in warehouses, cabins or storage tanks, sampled in batches. 6.2 Sampling when unloading Perform cargo sampling during loading and unloading.

7 Sampling methods

7.1 Sampling of bulk cargo 7.1.1 Sampling of bulk cereals, oils and feedstuffs 7.1.1.1 Determination and requirements of sampling amount, site 7.1.1.1.2 Bulk stacking The bulk open stacking sets a sampling zone with an area not exceeding 50m2, a height of about 1.5m. 5 sampling points are evenly set up in each zone. When it exceeds the specified area, it shall increase the number of sampling point proportionally. Stacking height in principle does not exceed 1.5m. 7.1.1.1.4 Ship-cabin Based on different loading number of single ship, perform the sampling according to the following methods. 7.1.1.1.5 Silo In general, no manual sampling is used in the silo. For silos with mechanized sampling equipment, the cargo entering and exiting the silo adopts the device specified in 5.4.Extract a small batch of samples when 1000t enters and exists the silo. According to the unloading flow rate, set the device sampling frequency at least 50 times. 7.1.1.1.6 Container bulk If the number of cargo submitted for inspection of same inspection number, same variety, same level is less than 10000t, extract one original sample per 500t. The sample number is not less than 5kg. When it is less than 500t, it shall be calculated as 500t and extract one original sample. 7.1.1.1.7 Mobile cargo If original samples are required taking from mobile cargo (conveyor, grab or other loading device), it shall according to the loading conditions of original cargo, refer to 7.1.1.1.1, 7.1.1.1.2, 7.1.1.1.3, 7.1.1.1.4, 7.1.1.1.5, 7.1.1.1.6, determine the number of batches, number of samples. Then according to the mass, delivery time and flow speed of the cargo to be inspected, estimate the sampling interval time and number of extraction each time. 7.1.1.2 Sampling operation 7.1.2 Sampling of bulk grease 7.1.2.1 Precipitate layer, emulsion layer and free Extract bottom samples with bottom sampler. Determine whether there is precipitate layer, emulsion layer and free water at tank bottom or cabin bottom. Remove free water as much as possible before sampling. And according to the contract requirements and the agreement of the parties concerned, measure the amount of water removed. 7.2.1.1.2 Determination of sampling site Based on different loading state, the sampling shall be performed according to the following methods. 7.2.1.1.1.1, a representative sample shall be taken from the tank, and the sample cannot be taken from the unloading warehouse. 7.2.1.2 Sampling operation 7.2.1.2.1 Single-sleeve sampler Hold the handle of the sampler, flow mouth facing downwards. Insert from the corner of the bag or the bag diagonally into 1/2 or more of the bag. Rotate the sampler at 180°. Make the flow mouth upwards. Hold for a moment. Make the cargo flow into the sampler probe. 7.2.1.2.2 Sampling shovel According to different sampling method, the operation shall be performed as follows. 7.2.1.2.3 Double-sleeve sampler See 7.1.1.2.1. 7.2.2 Sampling of piece-packed grease 7.2.2.1 Sampling proportion of piece-packed grease If it is considered that an inspection lot is fairly uniform, randomly select packed cargo sampling. For different specifications of the packaging, the number of samples can be according to the recommended values in Table 2.The quantity of each sample shall be basically the same, the quantity shall be controlled over 100g, and the number of samples in each batch shall not be less than 1000g. 7.2.2.2 Sampling of piece-packed liquid grease Plug the sampling tube with thumb, block the upper mouth and insert into the bottom of the bucket. Check the bottom for clear water and impurities. Then completely mix the grease in the bucket. Insert the sampling tube obliquely into the bottom of the bucket.

8 Preparation of laboratory sample

8.1 Preparation of laboratory samples of cereals, oils and feedstuffs 8.1.1 Reduction method 8.1.1.1 Reduction method of sample divider Keep the clean and dry sample divider steady. Turn off funnel switch. Pour the sample into the funnel from 5cm above the funnel. 8.1.1.2 Method of quartering Pour the sample on a clean, dry mixing table. Each hand holds one sample dividing plate to shovel the sample from the left and right sides to about 10cm height, aiming at the center and falling at the same time. Then change to its vertical direction to perform the same operation (center point remains unchanged). Repeatedly mix 4~5 times in this way. 8.1.1.3 Spoon sampling Pour the sample in a clean, dry white porcelain square plate or on a sample dividing table. Mix evenly and carefully with sample dividing plate. Tile into uniform thickness squares. Divide grids. Use a spatula to scoop samples from each grid, with no less than 16 samples, and the number of samples in each grid shall be the same. 8.2 Preparation of grease laboratory sample 8.2.1 Preparation of bulk grease laboratory sample Where tankers or tanks WITHOUT clear water and impurities at the bottom, the extracted samples are representative samples of the tankers or tanks. 8.2.2 Preparation of piece-packed grease laboratory sample The sample extracted according to sampling proportion and contained in the mixing bucket shall be the laboratory sample of this batch of grease.

9 Number of sample

Under normal circumstances, determine the minimum amount of sample as specified in Table 3.In special circumstances, it may be increased or decreased as appropriate. SN/T 0800.1-2016 SN ENTRY-EXIT INSPECTION AND QUARANTINE INDUSTRY Replacing SN/T 0800.1-1999 Inspection of cereals, oils and feedstuffs for import and export - Methods of sampling and preparation of samples Issued on. MARCH 9, 2016 Implemented on. OCTOBER 1, 2016 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

Table of Contents

Foreword... 3 1 Scope... 6 2 Normative references... 6 3 Terms and definitions... 7 4 General... 7 5 Sampling and sample preparation tools and devices... 7 6 Sampling time, site... 11 7 Sampling methods... 11 8 Preparation of laboratory sample... 21 9 Number of sample... 23 10 Sample holding, identification and inspection... 23 11 Sampling report... 24 12 Specimen preparation... 24 Annex A (informative) Sampling tools... 27 Annex B (normative) Sample amount of inspection items of cereals, oils and feedstuffs... 30

1 Scope

This Part of SN/T 0800 specifies the methods of sampling and preparation of samples of inspection of cereals, oils and feedstuffs for import and export. This Part is applicable to the sampling and sample preparation for inspection of cereals, oils and feedstuffs for import and export.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 5494, Inspection of grain and oils - Determination of foreign matter and unsound kernels of grain and oilseeds GB/T 5502, Inspection of grain and oils - Determination of milling degree of rice GB/T 5524, Animal and vegetable fats and oils - Sampling GB/T 10361, Wheat rye and respective flours durum wheat and durum wheat semolina - Determination of the falling number according to Hagberg-Perten GB/T 15687, Animal and vegetable fats and oils - Preparation of test sample

3 Terms and definitions

For the purposes of this document, the terms and definitions defined in SN/T 0798 apply.

4 General

4.1 General provisions In accordance with the provisions of SN/T 0799. 4.2 Batches 4.2.1 Batches of cereals, oils and feedstuffs The requirements for batches are as follows. 4.2.2 Batches of grease The amount of grease delivered in a single contract or transport document.

5 Sampling and sample preparation tools and devices

5.1 Single tube sampler Applicable to the sampling of bagged cargo. There are three types that are commonly used. 5.2 Double-sleeve sampler and slot receiver Applicable to sampling of bulk static cargo. According to the actual loading transport tools, the size of the cargo, the storage of cargo, use double sleeve sampler of different specifications, length. 5.3 Sampling shovel The shovel length is about 13cm, the width is about 8cm, the side height is about 4cm, the handle length is about 8cm. See Figure A.1 of Annex A. 5.4 Automatic mechanical sampling device Applicable to dynamic cargo sampling. The device mainly consists of four parts. 5.5 Deep-layer sampler A semi-automatic sampling device that mainly consists of several connectable stainless steel sampling tubes, an electric suction host, sample collection device and base or strap, of which its sampling tube can be assembled to a length of about 30m as required to extract deep-layer sample of the cargo. 5.6 Other sampling tools 5.6.1 ellis cup A manual sampling device made of lightweight aluminum for drawing samples from cargo running on conveyor belts. 5.9 Sample dividing cloth or suitable bedding Plastic film or other material bedding for on-site sample processing. 5.10 Sample bag (tube) Container made of strong, hygienic material that can seal. 5.11 Bottom sampler This bottom sampler (see Figure A.2) is of stainless steel structure and is suitable for withdrawing bottom samples from liquid oil contained in tanks or oil tanks. 5.12 Simple counterweight sampling tank The simple counterweight sampling tank (see Figure A.3) is suitable for sampling at different depths in a variety of storage tank. 5.14 Tube sampler Applicable to sampling of paste grease. (See Figure A.5). It is a stainless steel device consisting of two concentric tubes of the same length and close together, one of which can rotate in the other tube. Each tube has a longitudinal opening. 5.15 Sampling probe Sampling probe (see Figure A.6) is used for stearin sampling. It is made of stainless steel, with semi-circular or C-shaped cross section. When it is twisted and inserted into grease, it shall obtain a sample of oil. 5.18 Sample bottle Plastic bottle or glass bottle, capacity of 250mL ~ 1000mL. 5.19 Stainless steel spoon Total length is 15cm ~ 20cm, handle length is 10cm ~ 15cm, the spoon is elongated and elliptical. 5.20 Other sampling and sample preparation tools and devices Other tools and devices for sampling and sample preparation.

6 Sampling time, site

6.1 Warehouse or storage tank sampling The cargos are stored in warehouses, cabins or storage tanks, sampled in batches. 6.2 Sampling when unloading Perform cargo sampling during loading and unloading.

7 Sampling methods

7.1 Sampling of bulk cargo 7.1.1 Sampling of bulk cereals, oils and feedstuffs 7.1.1.1 Determination and requirements of sampling amount, site 7.1.1.1.2 Bulk stacking The bulk open stacking sets a sampling zone with an area not exceeding 50m2, a height of about 1.5m. 5 sampling points are evenly set up in each zone. When it exceeds the specified area, it shall increase the number of sampling point proportionally. Stacking height in principle does not exceed 1.5m. 7.1.1.1.4 Ship-cabin Based on different loading number of single ship, perform the sampling according to the following methods. 7.1.1.1.5 Silo In general, no manual sampling is used in the silo. For silos with mechanized sampling equipment, the cargo entering and exiting the silo adopts the device specified in 5.4.Extract a small batch of samples when 1000t enters and exists the silo. According to the unloading flow rate, set the device sampling frequency at least 50 times. 7.1.1.1.6 Container bulk If the number of cargo submitted for inspection of same inspection number, same variety, same level is less than 10000t, extract one original sample per 500t. The sample number is not less than 5kg. When it is less than 500t, it shall be calculated as 500t and extract one original sample. 7.1.1.1.7 Mobile cargo If original samples are required taking from mobile cargo (conveyor, grab or other loading device), it shall according to the loading conditions of original cargo, refer to 7.1.1.1.1, 7.1.1.1.2, 7.1.1.1.3, 7.1.1.1.4, 7.1.1.1.5, 7.1.1.1.6, determine the number of batches, number of samples. Then according to the mass, delivery time and flow speed of the cargo to be inspected, estimate the sampling interval time and number of extraction each time. 7.1.1.2 Sampling operation 7.1.2 Sampling of bulk grease 7.1.2.1 Precipitate layer, emulsion layer and free Extract bottom samples with bottom sampler. Determine whether there is precipitate layer, emulsion layer and free water at tank bottom or cabin bottom. Remove free water as much as possible before sampling. And according to the contract requirements and the agreement of the parties concerned, measure the amount of water removed. 7.2.1.1.2 Determination of sampling site Based on different loading state, the sampling shall be performed according to the following methods. 7.2.1.1.1.1, a representative sample shall be taken from the tank, and the sample cannot be taken from the unloading warehouse. 7.2.1.2 Sampling operation 7.2.1.2.1 Single-sleeve sampler Hold the handle of the sampler, flow mouth facing downwards. Insert from the corner of the bag or the bag diagonally into 1/2 or more of the bag. Rotate the sampler at 180°. Make the flow mouth upwards. Hold for a moment. Make the cargo flow into the sampler probe. 7.2.1.2.2 Sampling shovel According to different sampling method, the operation shall be performed as follows. 7.2.1.2.3 Double-sleeve sampler See 7.1.1.2.1. 7.2.2 Sampling of piece-packed grease 7.2.2.1 Sampling proportion of piece-packed grease If it is considered that an inspection lot is fairly uniform, randomly select packed cargo sampling. For different specifications of the packaging, the number of samples can be according to the recommended values in Table 2.The quantity of each sample shall be basically the same, the quantity shall be controlled over 100g, and the number of samples in each batch shall not be less than 1000g. 7.2.2.2 Sampling of piece-packed liquid grease Plug the sampling tube with thumb, block the upper mouth and insert into the bottom of the bucket. Check the bottom for clear water and impurities. Then completely mix the grease in the bucket. Insert the sampling tube obliquely into the bottom of the bucket.

8 Preparation of laboratory sample

8.1 Preparation of laboratory samples of cereals, oils and feedstuffs 8.1.1 Reduction method 8.1.1.1 Reduction method of sample divider Keep the clean and dry sample divider steady. Turn off funnel switch. Pour the sample into the funnel from 5cm above the funnel. 8.1.1.2 Method of quartering Pour the sample on a clean, dry mixing table. Each hand holds one sample dividing plate to shovel the sample from the left and right sides to about 10cm height, aiming at the center and falling at the same time. Then change to its vertical direction to perform the same operation (center point remains unchanged). Repeatedly mix 4~5 times in this way. 8.1.1.3 Spoon sampling Pour the sample in a clean, dry white porcelain square plate or on a sample dividing table. Mix evenly and carefully with sample dividing plate. Tile into uniform thickness squares. Divide grids. Use a spatula to scoop samples from each grid, with no less than 16 samples, and the number of samples in each grid shall be the same. 8.2 Preparation of grease laboratory sample 8.2.1 Preparation of bulk grease laboratory sample Where tankers or tanks WITHOUT clear water and impurities at the bottom, the extracted samples are representative samples of the tankers or tanks. 8.2.2 Preparation of piece-packed grease laboratory sample The sample extracted according to sampling proportion and contained in the mixing bucket shall be the laboratory sample of this batch of grease.

9 Number of sample

Under normal circumstances, determine the minimum amount of sample as specified in Table 3.In special circumstances, it may be increased or decreased as appropriate. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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