AS 2242.1.1-1979

1 - AS 2242.1.1-1979 INSTRUMENTAL METHODS FOR ANALYSIS OF MILK AND MILK PRODUCTS - DETERMINATION OF FAT IN WHOLE MILK - TURBIDIM
4 - PREFACE
5 - CONTENTS
6 - FOREWORD
7 - METHOD
7 - 1 SCOPE.
7 - 2 APPLICATION.
7 - 3 PRINCIPLE.
7 - 4 MATERIALS AND REAGENTS.
7 - 4.1 Materials.
7 - 4.2 Reagents.
7 - 5 APPARATUS.
7 - 6 PREPARATION OF SAMPLES FOR TESTING.
7 - 6.1 Condition.
7 - 6.2 Storage.
7 - 6.3 Provisions for Mixing.
7 - 6.4 Preparation.
8 - 7 CALIBRATION OF THE INSTRUMENT.
8 - 7.1 Basic Procedure.
9 - 7.2 Calibration Conformance Check.
9 - 7.3 Daily Check Test.
10 - 8 PROCEDURE FOR THE OPERATION OF THE INSTRUMENT.
10 - 9 REPORT.
10 - 10 REPEATABILITY.
11 - APPENDIX A - DETERMINATION OF THE FAT IN WHOLE MILK USING THE FOSS 'MILKO' TESTER MARK III
11 - A1 SCOPE.
11 - A2 APPLICATION.
11 - A3 PRINCIPLE.
11 - A4 MATERIALS AND REAGENTS.
11 - A4.1 Materials.
11 - A4.2 Reagents.
12 - A5 APPARATUS.
12 - A6 PREPARATION OF SAMPLES.
12 - A7 CALIBRATION OF THE INSTRUMENT.
12 - A8 PROCEDURE FOR OPERATION OF THE INSTRUMENT
12 - A8.1 Instrument Parameters and Components.
13 - A8.2 Routine Daily Inspection.
13 - A8.3 Electrical Checks- Zero and Shift Value.
15 - A8.4 Calibration.
15 - A8.5 Procedure for Making a Measurement
15 - A9 REPORT.
15 - A10 REPEATABILITY.
15 - ANNEX 1 TO APPENDIX A - ADJUSTMENTS TO OBTAIN MAXIMUM ACCURACY
15 - 1 GENERAL.
16 - 2 CHECK OF CALIBRATION.
18 - 3 READJUSTMENT OF THE INSTRUMENT.
20 - ANNEX 2 TO APPENDIX A - CALCULATIONS RELATING TO INSTRUMENT CALIBRATION
20 - 1 CALCULATION OF NUMBER OF DETERMINATIONS FOR EQUIVALENT PRECISION.
22 - 2 CALCULATION OF THE PERMITTED DIFFERENCE BETWEEN THE RESULTS OBTAINED BY THE ‘MILKO’ TESTER MARK III AND THE SELECTED REFERE
23 - 3 CALCULATION OF THE CALIBRATION STATISTIC