GB/T 15063-2020 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 15063-2020 | English | 260 |
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Compound fertilizer
| Valid |
| GB 15063-2009 | English | 85 |
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[GB/T 15063-2009] Compound fertilizer (Complex fertilizer)
| Obsolete |
| GB 15063-2001 | English | 399 |
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Compound fertilizer (Complex fertilizer)
| Obsolete |
| GB 15063-1994 | English | 559 |
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Compound fertilizer
| Obsolete |
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GB/T 15063-2020: Compound fertilizer---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/GBT15063-2020
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 65.080
G 21
Replacing GB/T 15063-2009
Compound fertilizer
复合肥料
Issued on. NOVEMBER 19, 2020
Implemented on. JUNE 01, 2021
Issued by. State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 6
4 Technical requirements... 7
5 Sampling... 8
6 Test methods... 10
7 Inspection rules... 13
8 Identification and quality certificate... 14
9 Packaging, transportation, storage... 15
Appendix A (Normative) Determination of available phosphorus content in compound
fertilizers - Quinoline phosphomolybdate gravimetric method... 17
Appendix B (Normative) Determination of chloride ion content in compound fertilizers
- Automatic potentiometric titration... 21
Appendix C (Normative) Determination of available calcium and available magnesium
content in compound fertilizer - Plasma emission spectrometry... 24
1 Scope
This standard specifies the terms and definitions, technical requirements, sampling, test
methods, inspection rules, marking and quality certificates, packaging, transportation,
storage of compound fertilizers.
This standard applies to compound fertilizers (including ternary or binary solid
fertilizers, which use nitrogen, phosphorus, potassium as basic nutrients, under various
names). This standard does not apply to compound fertilizer products, such as
monoammonium phosphate and diammonium phosphate.
2 Normative references
The following documents are essential to the application of this document. For the dated
documents, only the versions with the dates indicated are applicable to this document;
for the undated documents, only the latest version (including all the amendments) is
applicable to this standard.
GB/T 3597 Fertilizer - Determination of nitrate nitrogen content - Nitron gravimetric
method
GB/T 6274 Fertilizers and soil conditioners - Vocabulary
GB/T 6679 General rules for sampling solid chemical products
GB/T 8170 Rules of rounding off for numerical values & expression and judgement
of limiting values
GB/T 8569 Packing of solid chemical fertilizers
GB/T 8571 Preparation of laboratory samples for compound fertilizers
GB/T 8572-2010 Determination of total nitrogen content for compound fertilizers
titrimetric method after distillation
GB/T 8573 Determination of available phosphorus content for compound fertilizers
GB/T 8574 Determination of potassium content for compound fertilizers -
Potassium tetraphenylborate gravimetric method
GB/T 8576 Determination of free water for compound fertilizers - Vacuum oven
method
GB/T 8577 Determination of free water for compound fertilizers - Karl Fischer
method
3 Terms and definitions
The terms and definitions, as defined in GB/T 6274, as well as the following terms and
definitions, apply to this document.
3.1 Compound fertilizer
Fertilizers, which are made by chemical methods and/or physical methods,
indicating the content of at least two of the three nutrients of nitrogen, phosphorus,
potassium.
3.2 Aggregate sample
The sample, which is combined from the individual samples of the inspection lot.
Note. For statistical analysis, the aggregate samples can be divided into several samples. for
separate subdivision and analysis.
4 Technical requirements
4.1 Appearance
Granular, strip or flake products, which have no mechanical impurities.
4.2 Technical indicators
The product shall meet the technical indicators in Table 1.At the same time, it shall
meet the indicated values on the packaging container.
4.3 Limit requirements for toxic and hazardous substances
The biuret content of the products, which are indicated in the packaging container or
the instructions for use that, it is suitable for simultaneous sowing of seed fertilizers,
shall be ≤ 0.8%; the limit requirements of other toxic and harmful substances shall be
implemented in accordance with GB 38400.
5 Sampling
5.1 Collection of aggregate samples
5.1.1 Bagged products
5.1.1.1 When the total number of bags, for each batch of products, does not exceed 512,
it shall determine the number of sampling bags, according to Table 2.When the total
number of bags of each batch of products is greater than 512, the minimum number of
sampling bags shall be determined, according to the calculation result of formula (1).
If there are decimals, it shall be rounded off to an integer.
5.1.2 Bulk products
It is carried out, in accordance with the requirements of GB/T 6679.
5.2 Sample reduction
Quickly mix the collected aggregate sample uniformly. Use a divider or quartering
method, to reduce the sample to about 1 kg. Then divide it into two parts, which are
divided into two clean and dry glass or plastic bottles with ground stoppers (the quality
inspection department of the manufacturer can use a clean and dry plastic Ziplock bag,
to hold the sample). Seal and label it. Indicate the name of the manufacturer, product
name, batch number or production date, sampling date and the name of the sampler.
One bottle is used for product inspection; the other bottle is retained for two month, for
future reference.
6 Test methods
6.1 General provisions
Except for appearance and particle size, make parallel determinations of two sets of
samples. The reagents, solutions, water, which is used in this standard, shall comply
with the provisions of HG/T 2843, when the specifications and preparation methods are
not specified.
6.2 Visual inspection
Use the sample in 5.2, to make inspection visually.
6.3 Total nutrients
6.3.1 Determination of total nitrogen content
6.3.2 Determination of available phosphorus content and calculation of the
percentage of water-soluble phosphorus in available phosphorus
6.3.2.1 Method 1.Quinoline phosphomolybdate gravimetric method (Arbitration
method)
It is carried out, in accordance with Appendix A.
6.3.2.2 Method 2.Quinoline phosphomolybdate gravimetric method or plasma
emission spectrometry
It is carried out, in accordance with GB/T 8573.
6.3.2.3 Method 3.Automatic analyzer method
After the specimen is prepared, according to the provisions of GB/T 8571 (if the sample
is difficult to pulverize, it can be ground, until it passes through a 1.00 mm aperture test
sieve). It is determined according to GB/T 22923.
6.3.3 Determination of potassium content
6.3.4 Calculation of total nutrients
Total nutrients are the sum of total nitrogen, available phosphorus, potassium content.
6.4 Determination of nitrate nitrogen content
6.4.1 Method 1.Nitrogen reagent gravimetric method (arbitration method)
After the specimen is prepared, according to the provisions of GB/T 8571 (if the sample
is difficult to pulverize, it can be ground, until it passes through a 1.00 mm aperture test
sieve). Then it is determined, according to GB/T 3597.
6.5 Determination of moisture
6.5.1 Method 1.Karl Fischer method (Arbitration method)
It is carried out, in accordance with GB/T 8577.
6.5.2 Method 2.Vacuum oven method
It is carried out, in accordance with GB/T 8576.
6.6 Determination of particle size
Use the samples in 5.2, to make determination, in accordance with GB/T 24891.
6.7 Determination of chloride ion content
6.7.1 Method 1.Volumetric method (Arbitration method)
6.8 Determination of the content of medium elements
6.8.1 Determination of available calcium and available magnesium content
6.9 Determination of trace element content
6.9.1 Method 1.Plasma emission spectrometry (arbitration method)
After the specimen is prepared, according to the provisions of GB/T 8571 (if the sample
is difficult to pulverize, it can be ground, until it all passes through a 1.00 mm aperture
test sieve). It is carried out, according to GB/T 34764.
6.9.2 Method 2.Atomic absorption spectrophotometry
It is carried out, in accordance with GB/T 14540.
7 Inspection rules
7.1 Inspection categories and inspection items
Product inspection is divided into exit-factory inspection and type inspection. Total
nutrient content, single nutrient content, percentage of water-soluble phosphorus in
available phosphorus (when applicable), nitrate nitrogen content (when applicable),
moisture, particle size, chloride ion content (when applicable), medium element content
(when applicable), trace element content (if applicable), is exit-factory inspection item.
Type inspection includes all items in Chapter 4.Type inspection is carried out in one of
the following situations.
7.2 Group-batching
Products are inspected in batches, which use one or two day output as a batch; the
maximum batch is 1500 t.
7.3 Result judgment
7.3.1 The qualification of the product quality indicators, in this standard, shall be
determined, by the "rounding-off value comparison method", in GB/T 8170.
7.3.2 Manufacturers shall carry out the exit-factory inspection and type inspection,
according to the requirements of this standard. When all the inspection items meet the
requirements of this standard, the batch of products is judged to be qualified.
7.3.3 If one of the indicators, in the results of the exit-factory inspection or type
inspection, which is conducted by the manufacturer, does not meet the requirements of
this standard, double amount of samples shall be taken from the same batch of
packaging containers, for inspection. In the re-inspection results, even if there is one
indicator does not meet the requirements of this standard, the batch of products is
judged to be unqualified.
8 Identification and quality certificate
8.1 If the product contains nitrate nitrogen, it shall be marked with "nitrate nitrogen",
on the packaging container.
8.2 When the products, which use the citrate-soluble phosphate fertilizers, such as
calcium-magnesium-phosphate fertilizers, as the basic fertilizer, they shall be marked
as "citrate-soluble phosphorus", in a prominent position of the packaging container.
8.4 For the products, which contain amide nitrogen (urea nitrogen), it shall be marked
with the following warning words, in a prominent position on the packaging container.
"Containing biuret; improper use will cause damage to crops". For products, which are
not marked with this warning, the inspection and testing agency may select a method
for measuring the total nitrogen content for detection and determination, based on the
fact that the product does not contain amide nitrogen (urea nitrogen).
8.6 There shall be warnings, precautions for use, etc., on the outer packaging container
of the product. Some product information, such as production date or batch number,
certificate of conformity, instructions for use, can be marked with easily identifiable
QR codes or barcodes.
8.7 If fertilizer additives, other than the requirements of this standard, are marked on
the product packaging, it shall mark the name, function, content, corresponding testing
method standards of the additives, on the packaging container.
8.8 The marking of nutrient content shall be labelled on the basis of the total material;
the material in the packaging container shall not be separated and labelled separately.
8.9 The net content of each bag shall be marked with a single value, such as 50 kg.
8.10 Each batch of qualified exit-factory products shall be accompanied by a quality
certificate, which includes. manufacturer's name, address, product name, batch number
or date of manufacture, total nutrients, formula or main nutrient content, chloride ion
content, biuret content, this standard number, as well as the content that shall be marked
according to laws and regulations. For the products, which use the citrate-soluble
phosphate fertilizers, such as calcium-magnesium phosphate fertilizers, as the basis, it
shall be marked as "citrate-soluble phosphorus"; meanwhile, it shall indicate whether
they are "nitrate nitrogen", "urea nitrogen", "organic nitrogen". Non-exit-factory
inspection items are marked with the test results of the latest type inspection.
8.11 The rest shall be implemented, in accordance with the provisions of GB 18382.
9 Packaging, transportation, storage
9.1 The product is packaged, by the materials that meet the requirements of GB/T 8569.
The packaging specifications are 1000 kg, 50 kg, 40 kg, 25 kg;
9.2 When there are additives in the product, within the stated net content range of each
bag, they shall be mixed with the raw materials evenly; they shall not be put into the
packaging bag, in the form of small packages.
9.3 On the premise of complying with the provisions of GB/T 8569, it should use the
economical and practical packaging.
9.4 The product shall be stored in a cool and dry place. It shall be protected from rain,
moisture, sun exposure, rupture, during transportation.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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