SIST EN ISO 3093:2010/oprA1:2026

• Status: Not Published
• Public Enquiry End Date: 13-Sep-2026
• ICS: 67.060 - Cereals, pulses and derived products
• Technical Committee: KŽP - Agricultural food products
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 09-Jul-2026
• Due Date: 26-Nov-2026
• Completion Date: 24-Sep-2026
• Ref Project: EN ISO 3093:2009/prA1 - Wheat, rye and their flours, durum wheat and durum wheat semolina - Determination of the falling number according to Hagberg-Perten - Amendment 1 (ISO 3093:2009/DAM 1:2026)

• Amends: SIST EN ISO 3093:2010 - Wheat, rye and their flours, durum wheat and durum wheat semolina - Determination of the falling number according to Hagberg-Perten (ISO 3093:2009)
• Effective Date: 18-Jun-2025

SIST EN ISO 3093:2010/oprA1:2026 is a draft amendment from SIST for the determination of the falling number according to Hagberg-Perten in wheat, rye, durum wheat and their flours and semolina. It adds the altitude-correction rules used when laboratories need comparable falling number (FN) results at different elevations.

What does SIST EN ISO 3093:2010/oprA1:2026 specify?

SIST EN ISO 3093:2010/oprA1:2026 specifies an amendment to the falling number method for cereals and cereal products. Its main technical content is Annex A, which gives the correction approach for results measured at altitude.

The amendment is organized as a short document with front matter and one normative annex:

Annex	What it covers
Annex A	Equations for altitude correction of falling numbers
A.1	Ground grain samples
A.2	Flour and semolina

Annex A also allows a conversion table to be used instead of calculating the correction directly, provided the table is prepared for the relevant altitude.

What are the key requirements of SIST EN ISO 3093:2010/oprA1:2026?

SIST EN ISO 3093:2010/oprA1:2026 focuses on correcting falling number values for laboratory altitude. The practical point is that test results can change when the water bath boils at a lower temperature, so the annex gives a way to compare results on the same basis.

• Annex A is normative. That means the altitude-correction method is part of the standard’s technical requirements, not just explanatory guidance.
• Two product groups are treated separately. Ground grain samples use one correction equation, while flour and semolina use another. In practice, laboratories need to choose the equation that matches the material being tested.
• The correction is made to sea level. Annex A calculates the falling number at sea level from the uncorrected value measured at altitude. This matters when results must be compared across sites at different elevations.
• The equations use the measured FN and the laboratory altitude H. The variables are defined in the annex, so the lab has to know both the test result and the altitude of the testing location.
• The annex applies where altitude affects the boiling point of the water bath. That links the correction to real test conditions rather than to the product itself.
• A conversion table may be used instead of the equation. For routine work, a lab can use a table prepared for a specific altitude to obtain corrected FN values for each measured result.
• The annex distinguishes between sample types because they behave differently in the method. That keeps the correction aligned with the product under test, which is important for quality control and specification checking.

What terms does SIST EN ISO 3093:2010/oprA1:2026 define?

The amendment uses these key terms and abbreviations:

• Falling number (FN) - the result being corrected in Annex A for altitude.
• Hagberg-Perten - the named method principle used for the falling number determination.
• Ground grain samples - grain samples covered by the correction approach in A.1.
• Flour and semolina - the milled products covered by the correction approach in A.2.
• Altitude, H - the laboratory elevation above sea level used in the correction.
• Water bath - the heated bath whose boiling temperature affects the need for correction.

Who uses SIST EN ISO 3093:2010/oprA1:2026?

SIST EN ISO 3093:2010/oprA1:2026 is used by laboratories and technical staff who determine falling number in cereals and cereal products. It is also relevant to quality managers, mill operators, grain processors and buyers who use FN results in specifications, acceptance checks and product comparison.

In practice, the amendment matters when testing is done at different elevations and the user needs results that are comparable from one laboratory to another. That makes it useful in cereal testing, flour quality control and grain trade documentation.

What changed in SIST EN ISO 3093:2010/oprA1:2026 from the previous edition?

SIST EN ISO 3093:2010/oprA1:2026 is Amendment 1 to ISO 3093:2009. The amendment adds Annex A with altitude-correction equations for falling numbers and allows the use of a conversion table for a specific altitude.

Which standards are used with SIST EN ISO 3093:2010/oprA1:2026?

SIST EN ISO 3093:2010/oprA1:2026 is identified as based on ISO 3093:2009/DAM 1:2026. The Slovenian document is also stated to be identical to EN ISO 3093:2009/prA1.

What does the SIST EN ISO 3093:2010/oprA1:2026 document contain?

The document contains the amendment front matter and Annex A with the technical correction method. Annex A gives two calculation paths, one for ground grain samples and one for flour and semolina, and it defines the variables used in the correction.

It also includes the option to replace calculation with a conversion table for a given altitude. That is useful in laboratory work where repeated FN measurements need to be adjusted quickly and consistently.

The document is structured for use in testing and reporting, not as a product description. Its practical purpose is to support altitude-corrected falling number values for cereal and cereal-product analysis.

SLOVENSKI STANDARD
01-september-2026
Pšenica, rž in njune moke, pšenica durum in pšenični zdrob durum - Ugotavljanje
števila padanja po Hagberg-Pertenu - Dopolnilo A1 (ISO 3093:2009/DAM 1:2026)
Wheat, rye and their flours, durum wheat and durum wheat semolina - Determination of
the falling number according to Hagberg-Perten - Amendment 1 (ISO 3093:2009/DAM
1:2026)
Weizen, Roggen und deren Mehle, Hartweizen und Hartweizengrieß - Bestimmung der
Fallzahl nach Hagberg-Perten - Änderung 1 (ISO 3093:2009/DAM 1:2026)
Blés tendres, seigles et leurs farines, blés durs et leurs semoules - Détermination de
l'indice de chute selon Hagberg-Perten - Amendement 1 (ISO 3093:2009/DAM 1:2026)
Ta slovenski standard je istoveten z: EN ISO 3093:2009/prA1
ICS:
67.060 Žita, stročnice in proizvodi iz Cereals, pulses and derived
njih products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
Amendment
ISO 3093:2009/
DAM 1
ISO/TC 34/SC 4
Wheat, rye and their flours,
Secretariat: SAC
durum wheat and durum wheat
semolina — Determination of
Voting begins on:
2026-06-22
the falling number according to
Voting terminates on:
Hagberg-Perten
2026-09-14
AMENDMENT 1
Blés tendres, seigles et leurs farines, blés durs et leurs semoules —
Détermination de l'indice de chute selon Hagberg-Perten
AMENDEMENT 1
ICS: 67.060
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO 3093:2009/DAM 1:2026(en)
DRAFT
ISO 3093:2009/DAM 1:2026(en)
Amendment
ISO 3093:2009/
DAM 1
ISO/TC 34/SC 4
Wheat, rye and their flours,
Secretariat: SAC
durum wheat and durum wheat
semolina — Determination of
Voting begins on:
the falling number according to
Voting terminates on:
Hagberg-Perten
AMENDMENT 1
Blés tendres, seigles et leurs farines, blés durs et leurs semoules —
Détermination de l'indice de chute selon Hagberg-Perten
AMENDEMENT 1
ICS: 67.060
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED
...