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Agricultural Product Standards Act, 1990 (Act No. 119 of 1990)

Regulations

Classification, Packing and Marking of Dairy Products and Imitation Dairy Products intended for sale in the Republic of South Africa

Tables

Table 23 : Methods of Analysis

 

Nature of

determination

No. of

publication

Date

issued

Title

1

2

3

4

1. Count - Colony forming units (fermented milk products)

ISO 6611

IDF 94

2004

Colony forming units of yeasts and/or moulds

(Colony count at 25 °C)

ISO 20128

IDF 192

2006

Lactobacillus acidophilus

(Colony count at 37 °C)

ISO 7889

IDF 117

2003

Lactobacillus delbrueckii subsp bulgaricus & Streptococcus thermophilus

(Colony count at 37 °C)

ISO 27205

IDF 149

(Annex A)

2010

Microorganisms constituting the starter culture

(Colony count at 25°C, 30°C, 37°C and 45°C according to the starter organism in question)

2. Fat content

ISO 1211

IDF 001

2010

Milk - Determination of fat content - Gravimetric method (Reference method)

ISO 1735

IDF 005

2004

Cheese and processed cheese products – Determination of fat content – Gravimetric method (Reference method)

ISO 1736

IDF 009

2008

Dried milk and dried milk products - Determination of fat content – Gravimetric method (Reference method)

ISO 1737

IDF 013

2008

Evaporated milk and sweetened condensed milk - Determination of fat content - Gravimetric method (Reference method)

ISO 2450

IDF 016

2008

Cream - Determination of fat content – Gravimetric method (Reference method)

ISO 7208

IDF 022

2008

Skimmed milk, whey and buttermilk - Determination of fat content - Gravimetric method (Reference method)

ISO 488

IDF 105

2008

Milk - Determination of fat content - Gerber butyrometers

3. Milk protein content

ISO 8968-1

IDF 20-1

2001

Milk - Determination of nitrogen content – Part 1: Kjeldahl method (including calculation of crude protein content)

ISO 8968-2

IDF 20-2

2001

Milk – Determination of nitrogen content - Part 2: Block-digestion method (Macro method) (including calculation of crude protein content)

ISO 8968-3

IDF 20-3

2004

Milk – Determination of nitrogen content – Part 3: Block-digestion method (Semi-micro rapid routine method) (including calculation of crude protein content)

4. Total solids

ISO 5534

IDF 004

2004

Cheese and processed cheese – Determination of the total solids content (Reference method)

IDF 15B

2010

Sweetened condensed milk – Determination of the total solids content (Reference method)

IDF 21B

2010

Milk, cream and evaporated milk – Determination of total solids content (Reference method)

5. Moisture content

ISO 5536

IDF 023

2009

Milkfat products - Determination of water content - Karl Fisher method

ISO 5537

IDF 026

2004

Dried milk - Determination of moisture content (Reference method)

ISO 8851-1

IDF 191-1

2004

Butter - Determination of moisture, non-fat solids and fat contents (Routine methods) – Part 1: Determination of  moisture content

6. Freezing point

ISO 5764

IDF 108

2009

Milk - Determination of freezing point - Thermistor cryoscope method (Reference method)

7. Salt content

ISO 1738

IDF 012

2009

Butter - Determination of the salt content

ISO 5943

IDF 088

2004

Cheese and processed cheese products - Determination of chloride content - Potentiometric titration method

8. Moisture, solidsnon- fat and fat content (butter only)

ISO 3727-1

IDF 080-1

2001

Butter - Determination of moisture, non-fat solids and fat contents –

ISO 3727-2

IDF 080-2

2001

Part 1: Determination of moisture content (Reference method)

ISO 3727-3

IDF 080-3

2003

Part 2: Determination of non-fat solids content (Reference method) Part 3: Calculation of fat content

9. Dispersibility and wettability

IDF 87

1979

Instant dried milk - Determination of the dispersibility and wettability

10. Lactoperoxidase

ISO/TS 17193

IDF 208

2011

Determination of the lactoperoxidase activity - Photometric method (Reference method)

11. β-Lactoglobulin

ISO 13875

IDF 178

2005

Determination of acid-soluble beta-lactoglobulin content - Reverse-phase HPLC method