Laboratory services

Laboratory of Chemistry and Microbiology

Laboratory for chemical and microbiological analyses of the Institute for Animal Husbandry, is accredited since 2001 by ATS (formerly JUAT), according to standard ISO / IEC 17025:2006 (decisions 01-05/2001 and 01-007 of 17.10.2003, 22.12.2006., 17.11.2010. and 5.11.2014.). Every year the Laboratory has successfully maintained accreditation, additional equipment is purchased and new analyses introduced.
Laboratory analyses are comprised of chemical, physical, chemical and microbiological tests, and include the following types of samples:

Meat and meat products
Oils and fats of vegetable or animal origin
Animal feed
Soil

Analyses are performed for various purposes such as scientific research, inspection services, farms and feed mills. All laboratory analyses are carried out in accordance with international standards and regulations,

Head of the Laboratory and Quality Manager:
Gordana Marinkov, grad.chem.
Phone: +381 64 8291 228
E-mail: gmarinkovis@gmail.com

Certificate of accreditation

Animal feed

Methods within the scope of accreditation:

•   Determination of total moisture (gravimetric)
•   Determination rough moisture (gravimetric)
•   Determination of hygroscopic moisture (gravimetric)
•   Determination of crude protein (volumetric)
•   Determination of ash (gravimetric)
•   Determination of crude fat (gravimetric)
•   Determination of crude fibre (gravimetric)
•   Determination of non-protein nitrogen (volumetric)
•   Determination of urease activity (potentiometrically)
•   Determination of calcium content (volumetric)
•   Determination of total phosphorus (spectrophotometry)
•   Determination of phosphorus soluble in 0.4% HCl (spectrophotometry)
•   Determination of phosphorus content in mineral fertilizers (spectrophotometry)
•   Determination of sodium chloride (volumetric)
•   Determination microelements: Ca, Fe, Mn, Zn, Cu, Mg (atomic-absorption spectrophotometry)
•   Determination of acids in the silage (method by Flieg)
•   Determination of silage pH (potentiometrically)

Methods outside the scope of accreditation:

•   Determination of mineral impurities and contaminants in food (gravimetric)
•   Determination of ash soluble in HCl (gravimetric)
•   Determination of the particle size of the mixture
•   Determination of the aciddegree (volumetric)
•   Determination of the test/hectolitre weight (gravimetric)
•   Calculation of the nutritional value of feed (FU)
•   The digestibility of protein in acid pepsin
•   Determination of tryptophane (spectrophotometry)
•   Determination of heavy metals: Pb, Cd, Cr (atomic-absorption spectrophotometry)
•   Determination of sugars before and after inversion
•   Determination of starch content
•   Determination of carotene content
•   Determination of nitrate content (spectrophotometry)
•   Determination of nitritecontent (spectrophotometry)
•   Determination of hydrogen cyanide (volumetric)
•   Determination of soluble nitrogen in silage
•   Determination of ammonia nitrogen in silage
•   Microbiological analyses
•   The aerobic bacteria count
•   The anaerobic bacteria count
•   The number and the determination of fungi
•   Individual survey for Salmonella
•   Microbiological examination of animal feed according the Rulebook

Meat and meat products

Methods within the scope of accreditation:

•   Determination of water content (gravimetric)
•   Determination of fat content (method according to Soxlet)
•   Determination of protein (method according toKjeldahl)
•   Determination of mineral content, ash-(gravimetric)
•   Determination of sodium chloride, NaCl (volumetric)
•   Determination of nitrite (spectrophotometry)
•   Determination of total phosphorus content (spectrophotometry)
•   Determination of meat pH (pH probe-meter, in an aqueous extract)

Methods outside the scope of accreditation:

•   Determination of hydroxyproline/connective tissue (spectrophotometry)
•   Determination of tryptophan (spectrophotometry)
•   Determination of starch (volumetric)
•   Inspection of meat for trichinellosis
•   Determination of water holding capacity (by centrifugation; method of Grau and Hamm, squeezing method)
•   Determination of the thickness of the muscle fibres
•   Determination of shear force (method according toWolotkewitsch)
•   Determination of pigments in meat (method according to Hart)
•   Determination of pigments in meat (method according toHorsney)
•   The aerobic bacteria count
•   The anaerobic bacteria count
•   The number and the determination of fungi
•   Individual survey for Salmonella
•   Microbiological analysis of meat products according the Rulebook
•   Determination of fatty acid composition of meat and meat products (GC-FID)

Vegetable and animal fats and oils

Methods of the scope of accreditation:

•   Determination of peroxide value (volumetric)
•   Determination of acid value (volumetric)
•   Determination of iodine value (volumetric)

Methods outside the scope of accreditation:

•   Determination of water content in fat (gravimetric)
•   Determination of saponification number (volumetric)
•   Determination of fatty acid composition of fats and oils (GC-FID)

Soil

Methods outside the scope of accreditation:

•   Determination of total nitrogen (volumetric)
•   Determination of the amount of accessible nitrogen (volumetric)
•   Determination of the amount of accessible phosphorus (volumetric)
•   Determination of the amount of accessible potassium (atomic-absorption spectrophotometry)
•   Determination of humus amount (volumetric)
•   Determination of CaCO3 (gravimetric)
•   Determination of mineral matters (gravimetric)
•   Determination of water content (gravimetric)
•   Determination of pH value (potentiometrically)

Laboratory services – Institute for Animal Husbandry Top