GOST 21560.2-82 PDF

Full title and description

GOST 21560.2-82 — "Fertilizers, mineral. Method for determination of static strength of granules." This national (USSR / Russian) standard specifies a laboratory method to determine the static compressive strength of individual granules of mineral (inorganic) fertilizers used for quality control, production acceptance and certification purposes.

Abstract

GOST 21560.2-82 defines a standardized procedure to measure the static (compressive) strength of fertilizer granules by applying a controlled load until fracture and reporting the resulting strength characteristics. The method is intended to provide reproducible test conditions for comparison between production batches and for assessment of handling and storage resistance of granulated mineral fertilizers.

General information

• Status: Active (document in force / maintained with later amendments).
• Publication date: Introduced 01 January 1983 (approved 31 May 1982; designation year 1982).
• Publisher: State standards authority (Gosstandart of the USSR at approval; later maintained in the Russian standards system).
• ICS / categories: Fertilizers / agricultural chemical products (classification references used in catalogue entries: 65.080 / fertilizer standards and related test methods).
• Edition / version: GOST 21560.2-82 (original 1982/1983 edition); includes recorded amendments/extensions (examples: amendments dated 1988 and 2001 in registry notes).
• Number of pages: Typically published as a short method standard — commonly listed as 8 pages in standard catalogue entries.

(Summary bibliographic details above are compiled from public standard catalogues and Russian standard registries.)

Scope

This standard applies to granulated mineral fertilizers and establishes the laboratory procedure for determining static (compressive) strength of individual granules. It covers sample selection and preparation, the test apparatus and sample positioning, the application of load to a single granule until fracture, and expression of results (typically as force at break or calculated strength). It is intended for use in production quality control, acceptance testing and comparative assessment of granule mechanical integrity.

Key topics and requirements

• Purpose and applicability: designed for granulated inorganic fertilizers and similar particulate products.
• Sampling and sample preparation: guidance for selecting representative granules and conditioning prior to test.
• Test apparatus: specification of a compressive / breakage tester or press with controlled loading rate and appropriate platens/fixtures.
• Test procedure: placing individual granules, applying axial load at a defined rate until fracture, recording peak load.
• Result reporting and calculation: reporting force at break, number of tested granules, statistical treatment (mean, variability) and criteria for acceptance or classification.
• Reference to related parts of the GOST 21560 series for complementary sampling, sizing and other test methods.

These topics reflect the standard’s core requirements for reproducible measurement of granule static strength.

Typical use and users

Primary users are fertilizer manufacturers (production quality control laboratories), independent test and certification laboratories, research institutions studying granule formation and durability, and equipment suppliers producing test rigs and sieving/handling systems for fertilizer plants. The method is used where mechanical integrity of granules matters for handling, storage and spreader performance.

Related standards

GOST 21560.2-82 is part of a family of standards addressing granulated mineral fertilizers; related items commonly listed in catalogues include GOST 21560.0-82 and GOST 21560.1-82 (other parts of the same series addressing terminology, sampling and complementary test methods). The standard replaced the earlier GOST 21560.2-76 and has recorded amendments noted in registry entries (example amendments in 1988 and 2001).

Keywords

GOST 21560.2-82; fertilizers; mineral fertilizers; granules; granule strength; static strength; compressive strength; test method; quality control; granule breakage.

FAQ

Q: What is this standard?

A: GOST 21560.2-82 is a national standard titled "Fertilizers, mineral. Method for determination of static strength of granules" that specifies a laboratory procedure to measure the static (compressive) strength of individual fertilizer granules.

Q: What does it cover?

A: It covers sampling/preparation of granules, the required test apparatus and fixture, the procedure for applying load until fracture, recording results and expressing strength values (including basic statistical reporting). It is focused on granulated mineral fertilizers.

Q: Who typically uses it?

A: Fertilizer producers' QC labs, independent testing and certification bodies, research labs working on granulation and formulation, and equipment suppliers for material testing and sieving.

Q: Is it current or superseded?

A: Catalogue and registry entries list GOST 21560.2-82 as the active version (introduced 01 Jan 1983) with later administrative amendments recorded; it replaced an earlier 1976 version (GOST 21560.2-76). Users should verify national registry status for regulatory or certification purposes before relying on it for compliance.

Q: Is it part of a series?

A: Yes — it is one part of the GOST 21560 series addressing mineral fertilizers and associated test methods; other parts include GOST 21560.0-82 and GOST 21560.1-82 (catalogues list these as related standards).

Q: What are the key keywords?

A: Fertilizers, mineral fertilizers, granules, static strength, compressive strength, test method, quality control, GOST 21560.2-82.