| ORGANOLEPTIC TEST | | |
| Appearance, color, shape, consistency, type of curd, cross-section surface, structure, taste, smell, temperature, cross-sectional structure, brine, glazing | BDS 15612 | |
| PHYSICO-CHEMICAL AND BIOCHEMICAL TESTS | | |
| Active acidity (рН) | QOP 504-1-FH-26 | |
| Titrable (total) acidity | BDS 1111 | |
| Water content/dry matter | BDS 1109; BDS EN ISO 3727-1 | |
| Fat content (crude fat) | ISO 2446; ISO 3433; BDS EN ISO 17189; BDS EN ISO 3727-3 | |
| Protein content (protein, nitrogen) | BDS 6231 it.2; BDS EN ISO 8968-1 | |
| Sugars content (lactose) | BDS 6191 it.3 | |
| Carbohydrates content | QOP 504-1-FH-41 | |
| Crude cellulose content (fibers) | BDS ISO 5498; BDS ISO 6541 | |
| Ash content | BDS 6154 | |
| Table salt content (sodium chloride) | BDS 8274item5; item6; QOP 504-1-FH-03 | |
| Energy value | чл. 10 от Наредба №23/2009 | |
| Sodium hydroxide residues content | QOP 504-1-FH-15 | |
| Chlorine residues content | QOP 504-1-FH-27 | |
| Testing for presence of epihydrin aldehyde through Kreis reaction (Fat rancidity) | QOP 504-1-FH-30 | |
| Vegetable fats presence in milk fat through Bélier reaction | QOP 504-1-FH-29 | |
| Presence of starch - qualitative test | QOP 504-1-FH-28 | |
| Determination of peroxide value | BDS EN ISO 3960 | |
| Benzoic acid content | BDS 1554 item III.15 | |
| Aluminum content | QOP 504-1-FH-07 | |
| Arsenic content | QOP 504-1-FH-19; BDS EN 15763 | |
| Iron content | QOP 504-1-FH-02 | |
| Mercury content | BDS EN 15763 | |
| Cadmium content | QOP 504-1-FH-17; BDS EN 15763 | |
| Tin content | QOP 504-1-FH- 57 | |
| Calcium content | QOP 504-1-FH-21; BDS 14677; ISO 12081 | |
| Magnesium content | QOP 504-1-FH-52 | |
| Manganese content | QOP 504-1-FH-04 | |
| Copper content | BDS 10692; QOP 504-1-FH-18 | |
| Sodium content | QOP 504-1 ICP/MS-02 | |
| Nickel content | QOP 504-1-FH-24 | |
| Nitrates content | QOP 504-1-FH-08 | |
| Nitrites content | QOP 504-1-FH-05 | |
| Lead content | QOP 504-1-FH-16; BDS 10691; BDS EN 15763 | |
| Phosphates (phosphorus) content | QOP 504-1-FH-06 | |
| Chromium content | QOP 504-1-FH-25 | |
| Zinc content | QOP 504-1-FH-23 | |
| Aflatoxin M1 content | QOP 504-1-FH-31 | |
| Density | BDS 1110 | |
| Content of foreign impurities | BDS 9215item2 ;item3; item4 ;item5;item6 | |
| Test for pasteurisation (peroxidase activity) | BDS 1113 item1 | |
| Test for pasteurisation (phosphatase activity) | BDS 1113 item3 | |
| Urea content | BDS EN ISO 14637; QOP 504-1-FH- 44 | |
| Non-fatty matter content | BDS EN ISO 3727-2 | |
| Non-fat solids | ISO 2446;ISO 3433;BDS 1109 | |
| Degree of maturity (soluble: total protein) | BDS 6231 | |
| Casein content | QOP 504-1-FH-56 | |
| Sweeteners content: | | |
| - acesulfame К | BDS EN 12856; BDS EN 15911 | |
| - saccharine | BDS EN 12856; BDS EN 15911 | |
| - aspartame | BDS EN 12856; BDS EN 15911 | |
| - cyclamate | BDS EN 12857; BDS EN 15911 | |
| Colorings content: | | |
| Yellow: | | |
| - Sunset Yellow | QOP 504-1-IM-HPLC-01 | |
| - tartrazine | QOP 504-1-IM-HPLC-01 | |
| Red: | | |
| - erythrosine | QOP 504-1-IM-HPLC-01 | |
| - azorubine | QOP 504-1-IM-HPLC-01 | |
| - allura red | QOP 504-1-IM-HPLC-01 | |
| - ponceau | QOP 504-1-IM-HPLC-01 | |
| - amaranth | QOP 504-1-IM-HPLC-01 | |
| Blue | | |
| - indigotine | QOP 504-1-IM-HPLC-01 | |
| - Brillian Blue | QOP 504-1-IM-HPLC-01 | |
| - Patent Blue | QOP 504-1-IM-HPLC-01 | |
| Vitamin content: | | |
| - А (retinol) | BDS EN 12823-1;2 | |
| - А (beta-carotine) | BDS EN 12823-1;2 | |
| - В1 (thiamine) | QOP 504-1-IM-LC/MS-02 | |
| - В3 (niacin) | QOP 504-1-IM-LC/MS-02 | |
| - В6 (pyridoxine) | QOP 504-1-IM-LC/MS-02 | |
| - В7 (biotin/vitamin Н) | QOP 504-1-IM-LC/MS-02 | |
| - С (ascorbic acid) | BDS EN 14130 | |
| - D (D2 ergocalciferol) | BDS EN 12821 | |
| - D (D3 colecalciferol) | BDS EN 12821 | |
| - Е (tocopherols) | BDS EN 12822 | |
| - К (phytomenadione) | BDS EN 14148 | |
| Content of saturated fatty acids | BDS EN ISO 12966-2+BDS EN ISO 5508 | |
| Content of unsaturated fatty acids | BDS EN ISO 12966-2+BDS EN ISO 5508 | |
| Content of pesticide: Chlororganic Phosphororganic Nitrogen and sulfur-containing | BDS EN ISO 15662 | |
| MICROBIOLOGICAL TESTS | | |
| Total number of microorganisms, including mesophilic aerobes and facultative anaerobes microorganisms in dairy products | BDS ЕN ISO 4833-1 | |
| BDS ЕN ISO 4833-2 | | |
| Total number of microorganisms in raw milk | BDS ЕN ISO 4833-1 | |
| Inhibitors | BDS 6688 item2 | |
| Bacillus species including Bacillus Cereus | BDS EN ISO 21871 item9.1;item9.2; BDS EN ISO 7932 | |
| Bifidobacterium species | ISO 29981 | |
| Vibrios (other than Vibrio parahaemolyticus and Vibrio cholerae) | ISO/TS 21872-2 | |
| Vibrio parahaemolyticus; Vibrio cholerae | ISO/TS 21872-1 | |
| Water activity | ISO 21807 | |
| Yeast | BDS ISO 21527-1; -2 | |
| Escherichia coli | ISO 16649-1; -2; ISO 7251 item9.1; item9.2 | |
| Escherichia coli O157 | BDS EN ISO 16654 | |
| Enterobacter (cronobacter) sakazakii | ISO/TS 22964 | |
| Enterobacteria, including Proteus, Klebsiella, Citrobacter | ISO 21528-1 item9.2; item9.3; ISO 21528-1; -2 | |
| Yersinia enterocolitica | BDS EN ISO 10273 | |
| Campylobacter spp. | ISO 10272-1; BDS ISO/TS 10272-2 | |
| Clostridia perfringens | ISO 7937 | |
| Clostridia sulfite-reducing | ISO 15213 | |
| Coagulase-positive staphylococci | BDS EN ISO 6888-1+A1; -2+A1; -3+AC item9.1; -3+AC item9.2 | |
| Coliforms | ISO 4831item9.1; item9.2; ISO 4832 | |
| Lactobacillus species | BDS ISO 7889 | |
| Lactobacillus acidophilus | ISO 20128 | |
| Lactobacillus delbrueckii subsp. Bulgaricus | BDS ISO 9232 | |
| Leuconostoc | COMECON ST 5806 | |
| Listeria monocytogenes | BDS EN ISO 11290-1+А1; -2+А1 | |
| Mesophilic lactic bacteria | BDS ISO 15214 | |
| Total number of somatic cells (TNSC) | BDS EN ISO 13366-1 | |
| Moulds | BDS ISO 21527-1; -2 | |
| Psychrotrophic microorganisms | BDS ISO 17410 | |
| Salmonella species | BDS ЕN ISO 6579; SD СЕN ISO/ TS 6579-2 | |
| Streptococcus thermophilus | BDS ISO 9232; BDS ISO 7889 | |
| Shigella species | BDS EN ISO 21567 | |
| Contaminating microorganisms | ISO 13559 | |
| Genetically modified organisms | | |
| Determination of presence of genetically modified organisms – 35S | BDS EN ISO 21569 +A1; BDS EN ISO 21571 +A1 | |
| Determination of presence of genetically modified organisms – FMV | BDS EN ISO 21569 +A1; BDS EN ISO 21571 +A1 | |
| Determination of presence of genetically modified organisms – NOS terminator | BDS EN ISO 21569 +A1; BDS EN ISO 21571 +A1 | |