SN/T 0736.1-2012 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| SN/T 0736.1-2012 | English | 180 |
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Inspection for import and export fertilizers - Part 1: Sampling and sample preparation
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| SN/T 0736.1-1997 | English | 239 |
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Method of inspection for import and export fertilizers. Sampling and sample preparation
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SN/T 0736.1-2012: Inspection for import and export fertilizers - Part 1: Sampling and sample preparation
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/SNT0736.1-2012
SN
ENTRY-EXIT INSPECTION AND QUARANTINE INDUSTRY
STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA
SN/T 0736.1-2012
Replacing SN/T 0736.1-1997
Inspection for import and export fertilizers - Part 1:
Sampling and sample preparation
ISSUED ON: MAY 07, 2012
IMPLEMENTED ON: NOVEMBER 16, 2012
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 5
4 Sampling ... 7
5 Sample preparation ... 10
Inspection for import and export fertilizers - Part 1:
Sampling and sample preparation
1 Scope
This Part of SN/T 0736 specifies the sampling and sample preparation methods for
samples used for inspection of import and export fertilizers.
This Part applies to the sampling and sample preparation of bagged or bulk goods of
import and export fertilizers.
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 1992 Freight container vocabulary
GB/T 4549.1 Railway vehicle vocabulary - Part 1: Basic vocabulary
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1
consignment and amount of consignment
Products with the same mark and the same specification delivered at one time are
considered a consignment; the quantity constituting a consignment of fertilizers is the
amount of consignment; bulk fertilizers are measured in tons (t), and bagged fertilizers
are measured in pieces.
3.2
basic amount of consignment
The basic quantity to sample from a consignment of bulk or bagged fertilizers is the
basic amount of consignment.
3.3
increment
Each sample of a specified weight taken from a bag in a consignment of fertilizers or
from a specified part of bulk fertilizers.
3.4
sub-sample
A sample consisting of several increments from a consignment of fertilizers.
3.5
gross sample
A sample consisting of all increments or all sub-samples of a consignment of fertilizers.
3.6
sample for assaying
A sample taken by reduction from a gross sample or a sub-sample for composition
analysis.
3.7
moisture sample
A sample taken by reduction from a gross sample or a sub-sample for determination of
moisture content.
3.8
particle size sample
A sample taken by reduction from a gross sample or a sub-sample for particle size
screening.
3.9
universal sample
A sample taken by reduction and can be used for determination of more than two items,
such as a moisture sample and a sample for assaying.
3.10
freight container
An equipment for transporting goods, which shall meet the following conditions:
a) It has sufficient strength and stiffness and can be used repeatedly for a long time;
b) It is suitable for carriage by one or more modes of transportation, and the goods
in the container do not need to be repacked during transshipment;
c) It has devices to facilitate rapid loading, unloading and handling, especially
transferring from one mode of transportation to another;
d) It facilitates filling and emptying of goods;
e) It has a volume of 1 m3 and above;
f) It is a freight tool designed to ensure safety and has the ability to prevent
unauthorized persons from easily entering.
See GB/T 1992 for details.
3.11
wagon; freight car
A vehicle intended for the transport of goods and used for this purpose or in principle
grouped in goods trains. According to usage, it can be divided into general-purpose
wagons and special-purpose wagons.
See GB/T 4549.1 for details.
4 Sampling
4.1 Sampling tools
4.1.1 Stainless steel sample skewer: Generally, it can be made of a stainless steel tube
with a length of about 550 mm and an outer diameter of about 10 mm. A wooden handle
is installed at one end. At a distance of 50 mm from the end of the wooden handle, a 10
mm wide groove is opened along the length of the tube to the stainless steel end. Grind
this end to a tip with an angle of about 30° (see Figure 1).
Figure 1 -- Stainless steel sample skewer (Translator’s note: Please ignore the
watermark in GREEN)
4.1.2 Stainless steel sample shovel: Generally, it can be made of a stainless steel plate
with a length of 120 mm and a width of 50 mm, and a handle of 100 mm can be installed
(see Figure 2).
The number of increments need to be taken from each freight container (wagon) is
calculated according to formula (4):
where:
Ni - the number of increments that need to be taken from each freight container
(wagon). If there are decimals in the number of increments need to be taken from
each freight container (wagon), round them up to an integer;
A - the number of increments need to be taken from this consignment of goods;
B - the total number of freight containers (or wagons) of this consignment of goods.
If the number of freight containers (or wagons) of a consignment of goods exceeds the
number of increments that need to be taken, take at least one increment from each
freight container (or wagon). If the loading capacity of the freight containers (wagons)
is different, the distribution of the number of increments is proportional to the loading
capacity.
4.4.1.5 Sampling operation: Insert the back of the stainless steel sample skewer (4.1.1)
into the bag at an upward angle, rotate it 180° to fill the skewer slot with the goods,
then pull it out and quickly pour it into the plastic sample bag.
4.4.2 Bulk fertilizers
4.4.2.1 If the goods are in the cabin, the number of increments that need to be taken
shall be calculated according to the arrived amount of consignment. During the
unloading process, the samples are taken with a stainless steel sample shovel (4.1.2)
from points distributed on three layers, or the increments are taken at time intervals on
the conveyor belt.
4.4.2.2 If the goods are in a freight container or wagon, the number of increments need
to be taken per freight container (or number of wagons) shall be the same as 4.4.1.4,
and the sampling method shall be the same as 4.4.2.1.
5 Sample preparation
5.1 After all the increments have been taken, mix the obtained increments thoroughly
and divide them into parts using the cone quartering method or the bisection method.
Take out about 2 000 g and divide it into three parts: one part is the particle size sample,
which is about 1000 g; one part is the sample for assaying, which is about 500 g; one
part is the moisture sample, which is about 500 g. Put them into well-sealed containers,
seal and label them for inspection.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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