Methods of chemical and physical testing for the dairying industry Liquid milks - Determination of the iodide content of milk - Selective ion electrode method
Standards Australia
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<text>AS 2300.2.3-2008 METHODS OF CHEMICAL AND PHYSICAL TESTING FOR THE DAIRYING INDUSTRY - LIQUID MILKS-DETERMINATION OF THE...</text>
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<text>PREFACE</text>
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<text>METHOD</text>
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<text>1 SCOPE</text>
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<text>2 APPLICATION</text>
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<text>3 REFERENCED DOCUMENT</text>
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<text>4 PRINCIPLE</text>
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<text>5 REAGENTS</text>
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<text>5.1 General requirements</text>
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<text>5.2 Reagents</text>
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<text>5.2.1 Ionic strength adjuster (ISA)</text>
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<text>5.2.2 Electrode soaking solution</text>
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<text>5.2.3 Electrode cleaning solution</text>
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<text>5.2.4 Iodide standard stock solution A (100 000 μg iodide/L)</text>
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<text>5.2.5 Iodide standard solutions</text>
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<text>6 APPARATUS</text>
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<text>6.1 General</text>
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<text>6.2 Apparatus</text>
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<text>7 PROCEDURE</text>
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<text>7.1 General information</text>
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<text>7.2 Effect of light</text>
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<text>7.3 Sample preparation</text>
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<text>7.4 Calibration of millivolt meters</text>
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<text>7.5 Calibration of specific ion meters</text>
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<text>7.5.1 Meters reading in concentration units</text>
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<text>7.5.2 Meters reading in iodide concentration with an electrical zero point equivalent to50 μg iodide/L</text>
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<text>7.6 Calibration checks</text>
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<text>7.7 Measurement of iodide content of milk</text>
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<text>7.8 Recovery check</text>
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<text>8 CALCULATION AND EXPRESSION OF RESULTS</text>
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<text>9 REPEATABILITY</text>
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<text>10 ACCURACY AND UNCERTAINTY MEASUREMENT</text>
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<text>11 TEST REPORT</text>
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<text>APPENDIX A - CALCULATIONS TAKING ACCOUNT OF THE EFFECTS OF SAMPLE PREPARATION</text>
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This Standard sets out a method, using an iodide-selective electrode, for the determination of the iodide content of raw liquid milk and pasteurized milk.
NOTE: The result may not include protein-bound iodine.
| Document Type | Standard |
| Status | Current |
| Publisher | Standards Australia |
| Committee | FT-024 |
| Supersedes |
|
