Register of Analysis Methods

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Please read Introduction to Gafta Contractual Analysis before commencing.

Gafta Approved Analysts must always select a method from this list for both contractual and ring test analysis.

For the avoidance of doubt, references to an ISO method shall mean the latest published version of the method, unless otherwise agreed.

Please click the link to reach the method listed. ISO methods are available from www.ISO.org (for a fee).

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Introduction to Gafta Contractual Analysis

Effective 1 January 2021

1.0 Preparation of the Sample for Analysis

2.1 Moisture in Feedingstuffs

2.2 Moisture in Feedingstuffs with High Sugar Content

ISO 6496 (containing more than 4% Sucrose or Lactose)

Note: Clause 8 of ISO 6496 is replaced by Gafta procedure

2.3 Moisture in Cereals and Cereal Products

ISO 712-1 Part 1: Reference method

ISO 712-2 Part 2: Automatic drying oven method

2.4 Moisture in Maize

2.5 Moisture in Pulses

2.6 Moisture in Oilseed Residues

3.1 Cereal and cereal based products

3.2 Animal feeding Stuffs (excluding oilseed residues) – Oil procedure A 

ISO6492

Note: Procedure B does not apply

3.3 Oilseed meals — Determination of oil content — Extraction method with hexane (or light petroleum)

4.1 Crude Protein - Kjeldahl Method in Feedingstuffs

ISO 5983-2 Note: REFERENCE METHOD
ISO 5983-1 Note: is also an acceptable method

4.2 Crude Protein - Kjeldahl Method in Cereals

ISO 20483
Note: REFERENCE METHOD

4.3 Crude Protein – Dumas Method

ISO 16634-2
Note: KJELDAHL METHOD IS THE REFERENCE METHOD

4.4 Crude Protein - Dumas Method

ISO 16634-1
Note: KJELDAHL METHOD IS THE REFERENCE METHOD

5.1 Digestible Crude Protein

6.0 Urea

7.0 Volatile Nitrogenous Bases

8.0 Phosphorus

9.0 Crude Fibre in Feeding Stuffs

10.1 Sugar - Luff Schoorl Method

10.2 Lactose in Feedingstuffs

11.1 Crude Ash in Feedingstuffs

11.2 Crude Ash – Cereals

12.0 Ash which is insoluble in Hydrochloric Acid (Sand and/or Silica)

13.0 Water Soluble Chlorides in Feedingstuffs

ISO 6495-1
Note: Titration may also be carried out by potentiometry.

14.0 Calcium, Magnesium and Sodium - Atomic Absorption Spectrophotometry Method (AASM)

ISO 6869
Note:Inductively coupled plasma (ICP) is an acceptable detection technique

15.0 Hydrocyanic acid

16.0 Volatile Mustard Oil

17.0 Free and Total Gossypol

18.1 Aflatoxins in Feedingstuffs

ISO 17375
Note: Mass Spectometry is an acceptable detection technique.

18.2 Aflatoxins in Cereals

ISO 16050
Note: Mass Spectometry is an acceptable detection technique.

19.0 Carbonates

20.0 Sodium - Flame Photometry Method

ISO 7485
Note:Inductively coupled plasma (ICP) is an acceptable detection technique

21.0 Urease Activity

22.0 Starch – Polarimetric Method

23.0 Castor Seed Husk

24.0 Bulk Density of Cereals

25.1 Wet Gluten in Wheat Flour – Hand Washing

ISO 21415-1
Note: MECHANICAL TESTING IS THE REFERENCE METHOD

25.2 Wet Gluten in Wheat Flour – Mechanical Method

ISO 21415-2
Note: REFERENCE METHOD

26.1 Admixture in Wheat, Barley, Rye, Oats, Triticale and Pulses

26.2 Physical Characteristics of Grains

27.0 Sieving Test for Malting Barley

Analytica-EBC Method 3.11.1
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