GOST 15113.8-77 PDF

Full title and description

GOST 15113.8-77 — "Концентраты пищевые. Методы определения золы" / "Food concentrates. Methods for determination of ash". National (interstate) standard that specifies laboratory procedures for determining the mass fraction of ash (mineral residue) in food concentrate products.

Abstract

This standard defines a quantitative ashing method for food concentrates: sampling and preparation requirements (by reference to the GOST 15113 series), apparatus and reagents, ashing procedure (oxidative combustion and residue handling), weighing and calculation of ash content, and reporting of results. The method is intended for routine quality control and regulatory testing of powdered and concentrated food materials.

General information

• Status: Active / in-force (adopted by the State Committee for Standards of the USSR; subsequently retained in the post‑Soviet interstate registry with amendments).
• Publication date: Introduced into force 01 January 1979 (adoption resolution dated 24 August 1977).
• Publisher: State Committee for Standards of the USSR (Gosstandart); later maintained in interstate standard collections.
• ICS / categories: 67.050 (Food technology; food products and raw materials).
• Edition / version: GOST 15113.8-77 (original), with Amendments No.1 (approved April 1984) and No.2 (approved December 1986).
• Number of pages: 3 (concise method specification; official published leaflet typically 3–4 pages depending on publisher).

Scope

The standard applies to food concentrates and establishes a gravimetric ashing procedure to determine the mass fraction of ash (total mineral content) in laboratory test portions. It covers sample preparation references, required laboratory equipment (muffle furnace, porcelain crucibles, analytical balances, drying oven), reagents, step-by-step ashing and cooling procedure, corrections and calculation formulae, and performance considerations relevant to routine quality control and compliance testing.

Key topics and requirements

• Definition of ash (mineral residue remaining after complete combustion of organic matter) and its expression as mass fraction (percent).
• Requirements for sample taking and preparation (reference to GOST 15113.0-77 procedures for representative sampling of concentrates).
• Equipment and materials: muffle furnace capable of required temperature, porcelain (or specified) crucibles, desiccator, analytical balances (specified accuracy), drying oven.
• Ashing procedure: pre-drying of test portion, controlled ignition, stepwise temperature increase and maintenance, cooling in desiccator, weighing of crucible with ash.
• Calculation method for mass fraction of ash, including tare corrections and expression of results to required significant figures.
• Precision and repeatability notes, handling of volatile inorganic constituents, and treatment of interfering materials.
• References to related normative documents and amendments that modify apparatus tolerances or procedural details.

Typical use and users

Used by food testing laboratories, manufacturers of food concentrates (instant beverages, powdered soups, protein concentrates, dairy powders and similar products), quality control departments, certification and regulatory bodies responsible for food safety and labeling, and research laboratories assessing mineral content or compliance with product specifications.

Related standards

Part of the GOST 15113 series for food concentrates; normative cross-references within the standard include GOST 15113.0-77 (sampling and sample preparation) and other instrument/material standards referenced for balances, crucibles and ovens. Adjacent methods in the series cover specific determinations (sucrose, salt, moisture, etc.) and later national/regional standards may supersede or complement test conditions for particular products.

Keywords

GOST 15113.8-77, food concentrates, ash determination, ashing, mineral residue, gravimetric method, muffle furnace, analytical procedure, quality control, sampling (GOST 15113 series), USSR standard.

FAQ

Q: What is this standard?

A: GOST 15113.8-77 is an interstate (USSR-origin) standard titled "Food concentrates. Methods for determination of ash" that specifies a gravimetric laboratory method to determine ash content in food concentrates.

Q: What does it cover?

A: It covers sample preparation references, required apparatus and reagents, stepwise ashing procedure (combustion, cooling, weighing), calculation of ash content and related quality/precision considerations for food concentrate products.

Q: Who typically uses it?

A: Food product manufacturers, QA/QC laboratories, certification bodies, food safety regulators and research laboratories analyzing concentrated or powdered food materials.

Q: Is it current or superseded?

A: The standard was adopted in the late 1970s (entered into force 01 January 1979) and has recorded amendments (1984, 1986). It remains a concise prescribed method in the GOST 15113 series; users should check national or industry registries for any more recent replacements or national adaptations in their country before using it for regulatory compliance.

Q: Is it part of a series?

A: Yes — it is part 8 of the GOST 15113 family of standards for food concentrates, which includes general sampling and multiple part-methods for moisture, sucrose, salt, ash and other determinations.

Q: What are the key keywords?

A: Food concentrates, ash, ashing, gravimetric method, muffle furnace, mineral residue, GOST 15113, analytical method.