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NY/T 798-2015 (NY/T798-2015, NYT 798-2015, NYT798-2015) & related versions
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NY/T 798-2015: PDF in English (NYT 798-2015)
NY/T 798-2015
ICS 65.080
B 10
Replacing NY/T 798-2004
Compound microbial fertilizers
ISSUED ON: MAY 21, 2015
Issued by: Ministry of Agriculture of PRC
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions ... 4 
4 Requirements ... 5 
5 Test method ... 6 
6 Inspection rules ... 7 
7 Packaging, labeling, transportation, storage ... 9 
Compound microbial fertilizers
1 Scope
This standard specifies the terms and definitions, requirements, test methods,
inspection rules, markings, packaging, transportation, storage of compound
microbial fertilizers.
This standard applies to compound microbial fertilizers.
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 8170 Rules of rounding off for numerical values & expression and
judgement of limiting values
GB/T 19524.1 Determination of fecal coliforms in fertilizers
GB/T 19524.2 Determination of mortality of ascarid egg in fertilizers
HG/T 2843 Chemical fertilizer products - Standard volumetric, standard,
reagent and indicator solutions for chemical analysis
NY 525 Organic fertilizer
NY/T 1113 Terms of microbial fertilizer
NY/T 1978 Fertilizers - Determination of mercury, arsenic, cadmium, lead
and chromium content
NY/T 2321 Code of practice for inspection of microbial fertilizers
3 Terms and definitions
The terms and definitions as defined in NY/T 1113, as well as the following
terms and definitions, apply to this document.
Compound microbial fertilizers
The live microbial products that are compounded by specific microorganisms
and nutrients; can provide, maintain or improve plant nutrition; increase the
yield of agricultural products OR improve the quality of agricultural products.
Total primary nutrient
The sum of total nitrogen, effective phosphorus pentoxide, potassium oxide,
which is calculated as mass fraction.
4 Requirements
4.1 Bacterial species
The microbial species used shall be safe and effective. The producer shall
provide a classification and identification report of the bacterial species,
including complete information such as the scientific name of the genus and
species, morphology, physiological and biochemical characteristics,
identification basis, as well as the safety evaluation data of the bacterial species.
The use of bioengineered bacteria shall have relevant approvals for biosafety,
which allows large-scale release.
4.2 Appearance (sensory)
Homogeneous liquid or solid. Suspended liquid products shall not have a large
amount of precipitation; the precipitation shall be evenly dispersed after gentle
shaking. Powder products shall be loose. Granular products shall be free of
obvious mechanical impurities AND uniform in size.
4.3 Technical index
The technical index of the compound microbial fertilizer shall meet the
requirements of Table 1. Product dosage forms are divided into liquid and solid.
The solid dosage forms include powder and granular forms.
5.2 Determination of the count of effective viable bacteria, miscellaneous
bacteria rate, moisture, pH
It is performed according to the requirements of NY/T 2321.
5.3 Determination of total nitrogen (N) content
It is performed according to the requirements of NY 525.
5.4 Determination of phosphorus (P2O5) content
It is performed according to the requirements of NY 525.
5.5 Determination of potassium (K2O) content
It is performed according to the requirements of NY/T 2321.
5.6 Determination of organic matters
It is performed according to the requirements of NY 525.
5.7 Determination of the count of fecal coliform bacteria
It is performed according to the requirements of GB/T 19524.1. For the retrieval
table for the determination process and the most probable number (MPN) of
fecal coliform count, please refer to Appendix D of NY/T 2321.
5.8 Determination of the death rate of ascarid eggs
It is performed according to the requirements of GB/T 19524.2.
5.9 Determination of Arsenic (As), cadmium (Cd), lead (Pb), chromium (Cr)
mercury (Hg)
It is performed according to the requirements of NY/T 1978.
6 Inspection rules
6.1 Inspection classification
6.1.1 Exit-factory inspection
When the product is exit-factory, it shall be inspected by the quality inspection
department of the manufacturer, according to Table 1. The expiration date is not
inspected, during the exit-factory inspection.
6.1.2 Type inspection
7 Packaging, labeling, transportation, storage
7.1 Packaging
Choose appropriate packaging materials, containers, forms, methods,
according to different product dosage forms, to meet the basic requirements of
product packaging. The product packaging shall contain the product
qualification and instructions for use. In the instruction for use, it shall indicate
the scope of use, methods, dosage, precautions.
7.2 Markings
The content, which are marked on the label, shall comply with the provisions of
national laws and regulations.
7.2.1 Product name and trademark
It shall indicate the general name of the product, that has been specified by the
national standards and industry standards. For the name of the product OR the
name of the product with a special purpose, it may be marked, under the
general name of the product, by the font of smaller size. If the national
standards and industry standards do not provide for the general name of the
product, it shall use the name of the product, that will not cause
misunderstanding and confusion among users and consumers. Enterprises can
mark the registered trademarks.
7.2.2 Product specifications
It shall indicate the net weight of the product in each package; use the national
legal unit of measurement. The error range of the marked net weight shall not
exceed ±5% of its stated value.
7.2.3 Implemented standard of product
It shall indicate the standard number implemented by the product.
7.2.4 Registration certificate number of product
It shall indicate the valid registration certificate number of product.
7.2.5 Name and address of manufacturer
It shall indicate the name, address, postal code, contact number of the
manufacturer, who has been registered in accordance with the law AND can
bear the responsibility for product quality. For the imported products, it may be
exempted from the marking of the name and address of the manufacturer;
however, it shall indicate the place of origin (country/region) of the product, as

Standard ID NY/T 798-2015 (NY/T798-2015)
Description (Translated English) Compound microbial fertilizers
Sector / Industry Agriculture Industry Standard (Recommended)
Classification of Chinese Standard B10
Classification of International Standard 65.080
Word Count Estimation 7,777
Date of Issue 2015-05-21
Date of Implementation 2015-08-01
Older Standard (superseded by this standard) NY/T 798-2004
Quoted Standard GB/T 8170; GB/T 19524.1; GB/T 19524.2; HG/T 2843; NY 525; NY/T 1113; NY/T 1978; NY/T 2321
Drafting Organization Ministry of Agriculture, microbial fertilizer and edible fungus species Quality Supervision, Inspection and Testing Center
Administrative Organization Department of Plant Management, Ministry of Agriculture
Regulation (derived from) Ministry of Agriculture - Announcement 2258
Summary This Standard specifies the terms and definitions of complex microbial fertilizer, requirements, test methods, inspection rules, marking, packaging, transport and storage. This Standard applies to complex microbial fertilizer.