DIN EN 13654-2 2002-01 PDF

Full title and description

STB DIN EN 13654-2 2002-01 — Soil improvers and growing media — Determination of nitrogen — Part 2: Dumas method. National adoption of the EN method for determination of total nitrogen by combustion (Dumas) in soil improvers and growing media; provides the procedure, apparatus, reagents, calculation and reporting requirements for laboratories and producers.

Abstract

This standard specifies the Dumas combustion method for the determination of total nitrogen in soil improvers and growing media. It is applicable to all forms of nitrogen present in these materials but is not intended for liming materials or preformed products such as mineral‑wool or foam slabs. The document includes method principle, reagents, apparatus, sample preparation, procedure, calculation, expression of results, precision data and an informative annex with inter‑laboratory trial results.

General information

• Status: Current / Published as a national adoption of EN 13654-2.
• Publication date: 2002-01 (national adoption date; EN original published 2001).
• Publisher: Deutsches Institut für Normung (DIN) — national version of EN 13654-2.
• ICS / categories: 65.080 (Fertilizers; soil improvers and growing media).
• Edition / version: STB DIN EN 13654-2 2002-01 (identical to EN 13654-2:2001 / national adoption).
• Number of pages: 9 pages (typical published PDF length for the national/EN text).

Summary information above is based on the EN text and national adoption records.

Scope

The standard defines the Dumas (combustion) method for determining total nitrogen content in soil improvers and growing media. It applies to routine control and declaration testing of such materials where total nitrogen is required, excluding liming materials and preformed media (e.g., mineral‑wool or foam slabs). The scope covers required reagents and apparatus, sample handling, the combustion/analysis procedure, calculations, result expression and reporting, plus precision/performance data from inter‑laboratory trials.

Key topics and requirements

• Principle: high‑temperature combustion (Dumas) converting nitrogen compounds to measurable gases.
• Required reagents and calibration materials for combustion analyzers.
• Apparatus: automated combustion analyzers and associated gas trapping/detection systems.
• Sample preparation: representative sampling, drying/size reduction where applicable and weighing protocols.
• Analytical procedure: combustion, gas handling, detection, blank and calibration checks.
• Calculation and expression of results: conversion to mass fraction of total nitrogen with stated units and rounding rules.
• Precision and performance: repeatability/reproducibility data and an informative annex describing inter‑laboratory trial results.
• Reporting requirements: required information in test reports (method reference, sample ID, results, uncertainty, any deviations).

Key method requirements and structure follow the EN 13654 series analytical methods framework.

Typical use and users

Analytical laboratories (public and private), producers and packers of soil improvers and growing media, quality control and R&D departments, regulatory bodies and certification/inspection organizations use this standard for routine nitrogen measurement, product declaration and compliance testing. It is used where a total nitrogen value (all forms) determined by combustion is preferred over wet‑chemical Kjeldahl approaches.

Related standards

Closely related documents include EN 13654-1 (Part 1: Modified Kjeldahl method) and other EN/DIN standards covering extraction and determination of nutrients in soil improvers and growing media (for example EN 13652, EN 13651, EN 13650). The EN 13654 series provides complementary methods for nitrogen determination; users often reference both Part 1 (Kjeldahl) and Part 2 (Dumas) depending on sample matrix and regulatory needs.

Keywords

Soil improvers; growing media; nitrogen determination; Dumas method; combustion analysis; total nitrogen; analytical method; fertilizer analysis.

FAQ

Q: What is this standard?

A: It is the national adoption (STB DIN EN) of EN 13654-2 specifying the Dumas combustion method for determination of total nitrogen in soil improvers and growing media.

Q: What does it cover?

A: It covers principle, reagents, apparatus, sample handling, the combustion procedure, calculations, expression of results, precision data and reporting requirements for total nitrogen by the Dumas method; it excludes liming materials and preformed slabs (mineral wool, foam).

Q: Who typically uses it?

A: Analytical laboratories, manufacturers of soil improvers / growing media, quality assurance and regulatory bodies that need reliable total nitrogen data for product specification, labelling or compliance testing.

Q: Is it current or superseded?

A: The document is the published national adoption of the EN method (early 2000s) and is listed as the current national/EN text in common standards catalogues; users should check their national standards body for any more recent revisions or confirmations before using it for regulatory compliance.

Q: Is it part of a series?

A: Yes — it is Part 2 of the EN 13654 series on soil improvers and growing media nitrogen determination; Part 1 covers a modified Kjeldahl method and other related EN standards cover additional extractions and nutrient determinations.

Q: What are the key keywords?

A: Dumas method; total nitrogen; soil improvers; growing media; combustion analysis; EN 13654-2; analytical precision; test report.