National technical regulation for powdered milk products translate by dp ventilation's khoa

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NATIONAL TECHNICAL REGULATION FOR
POWDERED MILK PRODUCTS
I. GENERAL RULES
1. Scope
This regulation regulates food safety criteria and management requirements for powdered
milk products, including powdered milk, cream powder, whey powder and skimmed milk
powder with added vegetable fat.
This regulation does not apply to formula milk products for children up to 36 months of
age, formula milk with special medical purposes for babies and functional foods.
2. Subject of application
This regulation applies to:
a) Organizations and individuals that import, manufacture and trade powdered milk
products in Vietnam;
b) Relevant organizations and individuals.
3. Interpretation of terms
In this Regulation, the terms below are construed as follows:
3.1. Milk powder
Dairy products are made by removing water from the milk or adding or removing some
components of the milk but retain the ingredients and properties of the product and do not
change the ratio between whey protein and casein of whole milk. original material.
Powdered milk includes whole milk, partially skimmed milk and skimmed milk.
3.2. Cream powder
Product obtained after removing water from cream material.
Cream material is a fat-rich product, in the form of an emulsion obtained by physical
separation from milk.
3.3. Skimmed milk with added plant fat
Products are processed by removing water from skim milk, with added vegetable fat, can
add food additives.
3.4. Whey powder

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The product is processed by removing water from acid whey or whey.
II. TECHNICAL REGULATIONS
1. Food safety criteria for powdered milk products
1.1. Physical and chemical criteria are specified in Appendix I of this Regulation.
1.2. Maximum limits of pollutants are specified in Appendix II of this Regulation.
1.3. Microbiological criteria are specified in Appendix III of this Regulation.
1.4. The list of food additives allowed to be used complies with current regulations.
1.5. Test methods with an accuracy equivalent to the methods specified in the Appendix I,
Appendix II and Appendix III of this Regulation may be used.
1.6. The serial number and full name of the sampling method and testing methods are
specified in Annex IV of this Regulation.
1.7. In cases where it is necessary to check criteria which have not yet specified the testing
methods in this Regulation, the Ministry of Health shall decide on the basis of the current
domestic and foreign methods which have been validated.
2. Labeling
The labeling of powdered milk products must comply with the Government's Decree No.
89/2006 / ND-CP of August 30, 2006, on goods labels and guiding documents.

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III. REGULATIONS ON MANAGEMENT
1. Conformity announcement
1.1. Powdered milk products that are imported, manufactured or domestically traded must
be declared conformable with the provisions of this Regulation.
1.2. Methods, order and procedures for announcing the technical-regulation conformity
comply with the Regulation on standard conformity certification, standard conformity
certification and standard-conformity announcement and promulgation together with
Decision No. 24/2007 / QD-BKHCN September 28, 2007 of Minister of Science and
Technology and regulations of law.
2. Check for powdered milk products
Quality control, hygiene and safety of powdered milk products must comply with the
provisions of law.
IV. RESPONSIBILITIES OF ORGANIZATIONS AND INDIVIDUALS
1. Organizations and individuals importing and manufacturing powdered milk products
must declare the conformity in accordance with the technical regulations in this Regulation,
register the regulation conformity announcement at competent state management agencies
as decentralized by the Ministry of Health and ensure quality, safety and hygiene according
to the announced contents.
2. Organizations and individuals are only allowed to import, manufacture and trade
powdered milk products after completing the registration of regulation conformity
announcement and ensure quality, safety, hygiene and labeling in accordance with the
regulations. law.
V. ORGANIZATION OF IMPLEMENTATION
1. The Department of Food Safety and Hygiene was assigned to assume the prime
responsibility and coordinate with the relevant functional agencies in guiding the
implementation and organization of the implementation of this Regulation.
2. Based on management requirements, the Department of Food Safety and Hygiene shall
propose the Ministry of Health to amend and supplement this Regulation.
3. In the event that the standards and legal provisions cited in this Regulation are changed,
supplemented or replaced, the new text shall apply

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APPENDIX I
PHYSICAL AND PHYSICAL INDICATORS OF POWDERED MILK
PRODUCTS
Name indicator Specified level Test method Classification
criteria 1)
I. Whole milk powder
1. Moisture
content,% weight, not
more
5 TCVN 7729:2007
(ISO 5537:2004)
A
2. Milk protein
content in non-fat
solids of milk,% m /
m, not less
34 TCVN 7774:2007
(ISO 5542:1984), TCVN
8099-1:2009 (ISO 8968-
1:2001), TCVN 8099-
5:2009 (ISO 8968-
5:2001)
A
3. Milk fat content,%
mass fraction
from 26 to under
42
TCVN 7084:2002
(ISO 1736:2000)
B
II. Partly skimmed milk powder
1. Moisture
more
5 TCVN 7729:2007
(ISO 5537:2004)
A
2. Milk protein
content in non-fat
m, not less
34 TCVN 7774:2007
(ISO 5542:1984), TCVN
8099-1:2009 (ISO 8968-
1:2001), TCVN 8099-
5:2009 (ISO 8968-
5:2001)
A
mass fraction
greater than 1.5
and smaller than
26
TCVN 7084:2002
(ISO 1736:2000)
B
III. Skimmed milk and skimmed milk with added plant fat
1. Moisture
more
5 TCVN 7729:2007
(ISO 5537:2004)
A
2. Milk protein
content in non-fat
m, not less
34 TCVN 7774:2007
(ISO 5542:1984), TCVN
8099-1:2009 (ISO 8968-
1:2001), TCVN 8099-
5:2009 (ISO 8968-
5:2001)
A
m / m, not more
1.5 TCVN 7084:2002
(ISO 1736:2000)
B
IV. Cream powder

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1. Moisture
more
5 TCVN 7729:2007
(ISO 5537:2004)
A
2. Milk protein
content in non-fat
m, not less
34 TCVN 7774:2007
(ISO 5542:1984), TCVN
8099-1:2009 (ISO 8968-
1:2001), TCVN 8099-
5:2009 (ISO 8968-
5:2001)
A
m / m, not less
42 TCVN 7084:2002
(ISO 1736:2000)
B
V. Whey powder
1. Moisture
more
5 TCVN 7729:2007
(ISO 5537:2004)
A
2. Milk protein
content,% by weight,
not less than
10 TCVN 7774:2007
(ISO 5542:1984), TCVN
8099-1:2009 (ISO 8968-
1:2001), TCVN 8099-
5:2009 (ISO 8968-
5:2001)
A
Type A criteria: testing is required to assess conformity. Class B criteria: Testing is not
required for conformity assessment, but organizations and individuals that produce,
import and process liquid milk products must meet the requirements for category B.

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APPENDIX II
LIMITATION OF DIMENSIONS FOR POWDERED MILK PRODUCTS
Name indicator Maximum Test methods Classification
of criteria
I. Heavy metal
Lead, mg / kg of prepared product
for immediate use
0.02 TCVN 7933:2008
(ISO 6733:2006),
TCVN 7929:2008
(EN 14083:2003)
A
2. Tin (for products in tin-coated
packaging), mg / kg
250 TCVN 7730:2007
(ISO/TS
9941:2005), TCVN
8110:2009
(ISO 14377:2002),
TCVN 7788:2007
A
3. Stibi, mg/kg 1 TCVN 8132:2009 B
4. Arsen, mg/kg 0.5 TCVN 7601:2007 B
5. Cadmi, mg/kg 1 TCVN 7603:2007,
TCVN 7929:2008
(EN 14083:2003)
B
6. Mercury, mg / kg 0.05 TCVN 7993:2008
(EN 13806:2002)
B
II. Fungal toxins
1. Aflatoxin M1, mg/kg 0.5 TCVN 6685:2009
(ISO 14501:2007)
A
III. Melamin
1. Melamin, mg/kg 2.5 Technical
routine for
quantifying
melamine in
food (QD 4143 /
QD-BYT)
B
IV. Veterinary drug residue, µg / kg
1. Benzylpenicilin/Procain
benzylpenicilin
4 TCVN 8106:2009
(ISO/TS
26844:2006);
AOAC 988.08
A
2. Clortetracyclin/Oxytetracyclin/
Tetracyclin
100 TCVN 8106:2009
(ISO/TS
26844:2006);
AOAC 995.04
A

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3.
Dihydrostreptomycin/Streptomycin
200 TCVN 8106:2009
(ISO/TS
26844:2006);
AOAC 988.08;
A
4. Gentamicin 200 TCVN 8106:2009
(ISO/TS
26844:2006)
A
5. Spiramycin 200 TCVN 8106:2009
(ISO/TS
26844:2006)
A
6. Ceftiofur 100 TCVN 8106:2009
(ISO/TS
26844:2006)
B
7. Clenbuterol 50 B
8. Cyfluthrin 4) 40 TCVN 8101:2009
(ISO 8260:2008)
B
9. Cyhalothrin 4) 30 AOAC 998.01 B
10. Cypermethrin và alpha-
cypermethrin
100 US FDA PAM,
Vol. I, Section 304,
E4/C2, C4;
TCVN 8101:2009
(ISO 8260:2008)
B
11. Deltamethrin 4) 30 TCVN 8101:2009
(ISO 8260:2008)
B
12. Diminazen 150 B
13. Doramectin 15 B
14. Eprinomectin 20 B
15. Febantel/ Fenbendazol/
Oxfendazol
100 B
16. Imidocarb 50 B
17. Isometamidium 100 B
18. Ivermectin 10 B
19. Lincomycin 150 AOAC 988.08 B
20. Neomycin 1500 TCVN 8106:2009
(ISO/TS
26844:2006)
B
21. Pirlimycin 200 B

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22. Spectinomycin 200 B
23. Sulfadimidin 25 AOAC 992.21 B
24. Thiabendazol 4) 100 B
25. Triclorfon (Metrifonat) 4) 50 B
V. Plant protection drug residues 5), mg / kg
V.1. For pesticides soluble in water or partially soluble in fat
1. Endosulfan 0,01 TCVN 7082:2002
(ISO 3890:2000),
phần 1 và phần 2;
TCVN 8170:2009
(EN 1528:1996),
phần 1, 2, 3 và 4
A
2. 2,4-D 0,01 US FDA PAM,
E1
B
3. Abamectin 0,005 B
4. Acephat 0,02 AOAC 970.52 B
5. Aldicarb 0,01 US FDA PAM,
E1+DL1
B
6. Aminopyralid 0,02 B
7. Amitraz 0,01 B
8. Bentazon 0,05 B
9. Bifenazat 0,01 B
10. Bifenthrin 0,05 AOAC 970.52 B
11. Bitertanol 0,05 B
12. Carbaryl 0,05 AOAC 964.18;
US FDA PAM,
E1+DL1
B
13. Carbendazim 0,05 B
14. Carbofuran 0,05 US FDA PAM,
E1, DL1
B
15. Carbosulfan 0,03 B
16. Clormequat 0,5 B
17. Clorpropham 0,0005 US FDA PAM,
E4, C1-C4
B
18. Clorpyrifos 0,02 TCVN 8101:2009
(ISO 8260:2008)
B
19. Clorpyrifos-methyl 0,01 TCVN 8101:2009
(ISO 8260:2008)
B
20. Clethodim 0,05 B
21. Clofentezin 0,05 B

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22. Cyhexatin 0,05 B
23. Cyprodinil 0,0004 B
24. Cyromazin 0,01 B
25. Diclorvos 0,02 TCVN 8101:2009
(ISO 8260:2008)
B
26. Difenoconazol 0,005 B
27. Dimethenamid-p 0,01 B
28. Dimethipin 0,01 B
29. Dimethoat 0,05 AOAC 970.52 B
30. Dimethomorph 0,01 B
31. Diquat 0,01 B
32. Disulfoton 0,01 B
33. Dithiocarbamat 0,05 B
34. Ethephon 0,05 B
35. Ethoprophos 0,01 US FDA PAM,
E4, C1, C3
B
36. Fenamiphos 0,005 B
37. Fenbuconazol 0,05 B
38. Fenbutatin oxid 0,05 B
39. Fenpropimorph 0,01 B
40. Fipronil 0,02 US FDA PAM,
E4, C1-C4
B
41. Fludioxonil 0,01 B
42. Flutolanil 0,05 B
43. Glufosinat-amoni 0,02 B
44. Imidacloprid 0,02 B
45. Indoxacarb 0,1 B
46. Kresoxim-methyl 0,01 B
47. Lindane 0,01 AOAC 970.52 B
48. Methamidophos 0,02 B
49. Methidathion 0,001 US FDA PAM,
E4, C2, C4
B
50. Methomyl 0,02 US FDA PAM,
E1, DL1
B
51. Methoxyfenozid 0,01 B
52. Myclobutanil 0,01 B
53. Novaluron 0,4 B
54. Oxamyl 0,02 US FDA PAM,
E1, DL1
B
55. Oxydemeton-methyl 0,01 B

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56. Paraquat 0,005 B
57. Penconazol 0,01 B
58. Pirimicarb 0,01 B
59. Pirimiphos-methyl 0,01 TCVN 8101:2009
(ISO 8260:2008)
B
60. Procloraz 0,05 B
61. Profenofos 0,01 US FDA PAM,
E4, C1, C3
B
62. Propamocarb 0,01 B
63. Propiconazol 0,01 B
64. Pyraclostrobin 0,03 B
65. Pyrimethanil 0,01 US FDA PAM,
E4, C1-C4
B
66. Quinoxyfen 0,01 B
67. Spinosad 1 B
68. Tebuconazol 0,01 B
69. Tebufenozid 0,01 B
70. Terbufos 0,01 US FDA PAM,
C1-C4
B
71. Thiacloprid 0,05 B
72. Triadimefon 0,01 US FDA PAM,
C1, C3
B
73. Triadimenol 0,01 B
74. Trifloxystrobin 0,02 B
75. Vinclozolin 0,05 US FDA PAM,
C1-C3; E1-E5+C6
B
V.2. For fat-soluble plant protection drugs
1. Aldrin và dieldrin 0,006 TCVN 7082:2002
(ISO 3890:2000),
part 1 và part 2;
TCVN 8101:2009
(ISO 8260:2008);
TCVN 8170:2009
(EN 1528:1996),
part 1, 2, 3 và 4
A
2. Cyfluthrin 7)
0,04 TCVN 8101:2009
(ISO 8260:2008)
A
3. Clordane 0,002 TCVN 7082:2002
(ISO 3890:2000),
part 1 và part 2;
TCVN 8170:2009
(EN 1528:1996),
part 1, 2, 3 và 4
B

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4. Cypermethrin 0,05 US FDA PAM,
E4/C2, C4;
TCVN 8101:2009
(ISO 8260:2008)
B
5. DDT 0,02 TCVN 7082:2002
(ISO 3890:2000),
part 1 và part 2;
TCVN 8170:2009
(EN 1528:1996),
part 1, 2, 3 và 4
A
6. Deltamethrin 7)
0,05 TCVN 8101:2009
(ISO 8260:2008)
B
7. Diazinon 0,02 TCVN 8101:2009
(ISO 8260:2008)
B
8. Dicofol 0,1 TCVN 8101:2009
(ISO 8260:2008)
B
9. Diflubenzuron 0,02 B
10. Diphenylamin 0,0004 B
11. Famoxadin 0,03 B
12. Fenhexamid 0,01 B
13. Fenpropathrin 0,1 US FDA PAM
E4, C1-C4
B
14. Fenpyroximat 0,005 B
15. Fenvalerat 0,1 TCVN 8101:2009
(ISO 8260:2008);
AOAC 998.01
B
16. Flumethrin 0,05 B
17. Flusilazol 0,05 B
18. Heptaclor 0,006 TCVN 7082:2002
(ISO 3890:2000),
phần 1 và phần 2;
TCVN 8170:2009
(EN 1528:1996),
phần 1, 2, 3 và 4
B
19. Methopren 0,1 B
20. Permethrin 0,1 TCVN 8101:2009
(ISO 8260:2008)
B
21. Phorat 0,01 US FDA PAM
C2, C4
B
22. Piperonyl butoxid 0,05 US FDA PAM
E1, DL2
B
23. Propargit 0,1 US FDA PAM
E4+C6
B

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In kilograms of product, unless otherwise indicated.
3) Class A criteria: testing is required to assess conformity. Class B criteria: Testing is not
required for conformity assessment, but organizations, individuals producing, importing
and processing liquid milk products must meet the requirements for category B.
4) Also used as plant protection drug.
5) Refer to test methods in TCVN 5142: 2008 (CODEX STAN 229-1993, Rev.1-2003)
Analysis of pesticide residues - Recommended methods.
6) This limit applies to pasteurized and pasteurized milk products. For powdered milk
products, if the fat content is less than 2% by weight, the maximum limit of half of the
applicable limit shall apply. For milk products with a fat content of 2% or more, the limit
of 25 times this regulation is applied, calculated on the basis of fat in milk products.
7) Also used as veterinary medicine.

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APPENDIX III
Microbiological criteria of powdered milk products
Name indicator Sampling
plan
Limit Test methods Classification
of indicators
12)
c 8)
m 9)
M 10)
M 11)
1. Enterobacteriaceae 5 0 10 CFU/g TCVN 5518-1:2007
(ISO 21528-1:2004)
A
2. Staphylococci positive
for coagulase
5 2 10
CFU/g
100 CFU/g TCVN 4830-1:2005
(ISO 6888-1:1999,
With amd.1:2003);
TCVN 4830-2:2005
(ISO 6888-2:1999,
With amd.1:2003)
A
3. Endotoxins of
staphylococcus
(Staphylococcal
enterotoxin)
5 0 Not detected in 25 g AOAC 993.06;
AOAC 976.31;
AOAC 980.32
B
4. L. monocytogenes (for
instant products)
5 0 100 CFU/g TCVN 7700-2:2007
(ISO 11290-2:1998,
With amd.1:2004)
A
5. Salmonella 5 0 Not detected in 25 g TCVN 4829:2005
(ISO 6579:2002,
With amd.1:2004)
A
n: number of sample units taken from the lot to be tested.
c: the maximum number of result units between m and M, the total number of results
between m and M exceeding c is unsatisfactory.
m: is the limit at which results do not exceed this level, if results exceed or may not be
achieved.
M: is the maximum limit that no sample is allowed to pass.
Type A criteria: testing is required to assess conformity. Class B criteria: Testing is not
required for conformity assessment, but organizations and individuals that produce, import
and process liquid milk products must meet the requirements for category B.

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APPENDIX IV
LIST OF METHODS OF TESTING FOOD SAFETY INDICATORS FOR
POWDERED MILK PRODUCTS
I. Sampling
1. ISO 707, Milk and milk products - Guidance on sampling.
II. Method of testing physical and chemical criteria
1. TCVN 7084: 2002 (ISO 1736: 2000) Powdered milk and powdered milk products -
Determination of fat content - Weight method (standard method)
2. TCVN 7729: 2007 (ISO 5537: 2004) Powdered milk - Determination of moisture
(standard method)
3. TCVN 7774: 2007 (ISO 5542: 1984) Milk - Determination of protein content - Amido
black dye method (Conventional method)
4. TCVN 8099-1: 2009 (ISO 8968-1: 2001) Milk - Determination of nitrogen content - Part
1: Kjeldahl method
5. TCVN 8099-5: 2009 (ISO 8968-5: 2001) Milk - Determination of nitrogen content - Part
5: Determination of nitrogen protein content
III. Test method for contaminants
III.1. Heavy metal
1. TCVN 7601: 2007 Food - Determination of arsenic by silver method
dietyldithiocacbamat
2. TCVN 7603: 2007 Food - Determination of cadmium content by atomic absorption
spectroscopy
3. TCVN 7730: 2007 (ISO / TS 9941: 2005) Canned milk and condensed milk -
Determination of tin content - Spectrometric method
4. TCVN 7788: 2007 Food canned foods - Determination of tin content by atomic
absorption spectroscopy
5. TCVN 7929: 2008 (EN 14083: 2003) Food - Determination of trace elements -
Determination of lead, cadmium, chromium, molybdenum by atomic absorption
spectrometry using graphite furnace (GFAAS) after pressure decomposition force
6. TCVN 7933: 2008 (ISO 6733: 2006) Milk and milk products - Determination of lead
content - Atomic absorption method using graphite furnace.

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7. TCVN 7993: 2008 (EN 13806: 2002) Food - Determination of trace elements -
Determination of mercury by vapor-atomic atomic absorption spectrometry (CVAAS)
after pressure decomposition
III.2. Fungal toxins
1. TCVN 6685: 2009 (ISO 14501: 2007) Milk and powdered milk - Determination of
aflatoxin M1 content - Cleaning by immunoaffinity chromatography and determination by
high-performance liquid chromatography
III.3. Melamin
1. Technical routine for quantifying melamine in food, promulgated together with Decision
No. 4143 / QD-BYT of October 22, 2008
III.4. Veterinary drug residue
1. TCVN 8101: 2009 (ISO 8260: 2008) Milk and milk products - Determination of
organochlorine pesticides and polyclo biphenyl - Capillary gas-liquid chromatography
with electron capture detector
2. TCVN 8106: 2009 (ISO / TS 26844: 2006) Milk and milk products - Determination of
antibiotic residues - Test in vitro dispersion
3. AOAC 988.08 Antimicrobial Drugs in Milk. Microbial Receptor Assay (Antibiotics in
milk)
4. AOAC 992.21 Sulfamethazine Residues in Raw Bovine Milk (Sulfamethazine residues
in fresh cow's milk)
5. AOAC 995.04 Multiple Tetracycline Residues in Milk. Metal Chelate Affinity-Liquid
Chromatographic Method (Tetracycline residue in milk. Metal chelate affinity method -
liquid chromatography
6. AOAC 995.09 Chlortetracycline, Oxytetracycline, and Tetracycline in Edible Animal
Tissues. Liquid Chromatographic Method (Chlortetracycline, oxytetracycline and
tetracycline in animal meat. Liquid chromatography)
7. AOAC 998.01 Synthetic Pyrethroids in Agricultural Products Multiresidue. GC Method
(Pyrethroid synthesis in agricultural products. Gas chromatography method)
8. Pesticide Analytical Manual (PAM), Food and Drug Administration, Washington, D.C.,
USA, Vol. I, 3rd edition, Section 401
9. Pesticide Analytical Manual (PAM), Food and Drug Administration, Washington, D.C.,
USA, Vol. I, 3rd edition, Section 402
III.5. Residues of plant protection drugs

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1. TCVN 5142: 2008 (CODEX STAN 229-1993, Rev.1-2003) Analysis of plant protection
drug residues - Recommended methods
2. TCVN 7082-1: 2002 (ISO 3890-1: 2000) Milk and milk products - Determination of
residues of organochlorine compounds (pesticides) - Part 1: General considerations and
extraction methods
3. TCVN 7082-2: 2002 (ISO 3890-2: 2000) Milk and milk products - Determination of
residues of organochlorine compounds (pesticides) - Part 2: Methods for cleaning up coarse
extracts and confirmatory tests specified
4. TCVN 8101: 2009 (ISO 8260: 2008) Milk and milk products - Determination of
organochlorine pesticides and polyclo biphenyl - Capillary gas-liquid chromatography
with electron capture detector
5. TCVN 8170-1: 2009 (EN 1528-1: 1996) Foods with fat - Determination of plant
protection drugs and polyclo biphenyl (PCB) - Part 1: General requirements
protection drugs and polyclo biphenyl (PCB) - Part 2: Extraction of fats, plant protection
drugs and PCBs and determine the fat content
protection drugs and polyclo biphenyl (PCB) - Part 3: Methods of cleaning
protection drugs and polyclo biphenyl (PCB) - Part 4: Determination, confirmation and
other procedures
9. AOAC 964.18 Carbaryl Pesticide Residues. Colorimetric Method (Residuals of plant
protection drugs carbaryl. Colorimetric method)
10. AOAC 970.52 Organochlorine and Organophosphorus Pesticide Residues. General
Multiresidue Method (Organic chlorine pesticide residues and organophosphorus. Multi
residue method)
IV. Method of testing microbiological criteria
1. TCVN 4829: 2005 (ISO 6579: 2002, With amd.1: 2004) Microbiology of food and
animal feeding stuffs - Methods of detection of Salmonella on agar plates
2. TCVN 4830-1: 2005 (ISO 6888-1: 1999, With amd.1: 2003) Microbiology of food and
animal feeding stuffs - Quantitative method of Staphylococci with coagulase-positive
reaction (Staphylococcus aureus and other species) on plate agar - Part 1: Technique using
Baird-Parker agar medium

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animal feeding stuffs - Quantitative method of Staphylococci with coagulase-positive
reaction (Staphylococcus aureus and other species) on plate agar - Part 2: Technique using
rabbit plasma fibrinogen agar medium
4. TCVN 5518-1: 2007 (ISO 21528-1: 2004) Microbiology of food and animal feeding
stuffs - Methods of detection and enumeration of Enterobactericeae - Part 1: Detection and
quantification by MPN technique money increased
animal feeding stuffs - Methods of detection and quantification Listeria monocytogenes -
Part 2: Methods Quantitative

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