Milk reception: what to test before unloading a tanker

Check supplier documents, batch and tanker-compartment identifiers, seals, temperature, appearance and smell. Sediment, flakes or an unusual odour require investigation before normal reception continues.

This workflow concerns raw cow’s milk for industrial processing. The facility sets acceptance limits and testing frequency under applicable Uzbekistan requirements and its purchasing specification. GOST references are methodological guidance, not an automatic statement of local legal applicability.

Use a representative sample: follow the adopted mixing, sampling and preparation method. GOST 13928-84 covers milk and cream procured as raw materials. Heating or preservatives suitable for one test may interfere with another. Record sample ID, supplier, compartment, sampling time, temperature and operator. Keep a retained sample under the facility procedure and do not mix the batch with accepted milk until release.

Choose a panel for the veterinary medicines used by suppliers and the required detection thresholds. GOST 32219-2013 covers immunological methods and GOST 32254-2013 an instrumental rapid method. Compatibility with a specific standard must be documented for the kit and matrix. GOST 23454-2016 addresses inhibitory substances; it is not a universal certification for rapid strips.

For a positive, doubtful or invalid result, hold the batch separately and follow the laboratory procedure. A negative result applies only to the substances and thresholds in the selected panel. MilkoScan and somatic cell counters do not replace antibiotic testing.

Fat, protein, lactose and solids help assess purchasing value and suitability for processing. GOST 32255-2013 provides the method framework for infrared analysis. LabLog specifies MilkoScan Mars and FT3 as fully compliant with this standard; matrices, ranges and accuracy control are defined during implementation. An ultrasonic analyser cannot automatically be described as following an infrared method.

Compare results with the specification and supplier history. Unexpectedly low protein or solids require a sample check and investigation, not an immediate accusation of dilution.

Titratable acidity can be estimated with a suitably calibrated FOSS MilkoScan or assessed using dedicated rapid tests. Use separate indicator tests or a suitable pH meter for pH. Titratable acidity in degrees Turner (°T) and active acidity (pH) are different quantities without a universal conversion.

LabLog stocks acidity rapid tests. Contact us to discuss the available tests, what each measures and how to interpret the result. The exact range and suitability for milk follow the product instructions.

GOST 32892-2014 describes potentiometric pH measurement. Titrimetric methods are addressed by GOST 3624-92 and GOST R 54669-2011, with different territorial status: Russia uses the latter for milk. Applicability in Uzbekistan must be checked separately. Confirm borderline or disputed screening results using the adopted laboratory method; a strip marked in °T does not by itself perform GOST titration.

MilkoScan Mars and FT3 offer targeted and untargeted adulteration screening within the installed models and calibrations. Targeted models address specified substances; untargeted screening flags an unusual spectral profile. LabLog also offers separate adulteration rapid tests: contact us to select the substances and testing procedure.

Added water can be investigated with a cryoscope or a suitably calibrated FOSS MilkoScan. A cryoscope directly measures freezing point; added water generally shifts it towards 0 °C. GOST 25101-2015 describes the freezing-point method. FOSS provides a model-based estimate and screening alongside composition, depending on configuration.

A predicted value is not the same as direct cryoscopy. Interpret it alongside composition, density and natural milk variation. A screening alert calls for holding the batch and selecting a confirmatory test; no alert does not rule out every adulterant.

Somatic cell count supports raw-milk quality assessment and investigation of udder-health problems at supplier level. It is distinct from bacteria count. GOST 23453-2014 covers somatic-cell methods for raw milk. Instrument-specific method suitability and comparability must be established. SomaticScan uses fluorescence microscopy and automated image analysis; BacSomatic uses flow cytometry.

Compare SCC in cells/ml with the acceptance limit. A high bulk-milk SCC calls for investigation with the supplier; it does not identify an individual affected cow or the causative organism.

BacSomatic rapidly measures bacterial count. Individual bacterial cells (IBC/ml) and colony-forming units (CFU/ml) are different results. Comparison with a culture-based total count requires an accepted, validated conversion or reference testing. The instrument does not identify all pathogens. GOST 32901-2014 covers microbiological methods.

Separate tests used for batch release from planned laboratory monitoring. An analysis that will finish later is not yet evidence of compliance. The control programme sets frequency and any additional contaminant or technological-property tests.

Poorly cleaned hoses, connections or tanks can contaminate acceptable milk. Verify cleaning and line readiness before operation. LabLog offers EnSURE Touch and SystemSURE Plus, UltraSnap and SuperSnap surface tests, AquaSnap Total / Free for appropriate water samples, and SureTrend for hygiene records. Match test compatibility and thresholds to the selected system.

ATP indicates residual contamination, not a direct bacteria count or milk antibiotic result. MicroSnap adds microbiological testing of samples or swabs allowed by its method, with incubation and a compatible reader. InSite supports selected environmental monitoring tasks. After a failed hygiene check, apply corrective action and verify again before releasing the line.

Give each batch a clear status: released, held pending investigation, or nonconforming. An authorised person decides under the approved procedure. Record results and units, method, instrument, kit lot and expiry, quality-control result, operator and decision. Repeating tests until the first negative result is not an investigation.

The values below come from Table 2 of GOST 31449-2013; they are not automatic acceptance limits for every Uzbekistan facility. Check the applicable specification and intended use. The standard’s 4 ± 2 °C requirement concerns cooling after milking and must not be presented without context as the tanker reception limit.

MILKFOR Argentum Plus is a filtration option with antibacterial action. For its Ag+ range, the manufacturer reports bactericidal and bacteriostatic properties and reductions in bacterial contamination and measured somatic cell indicators through removal of impurities and clots. Select the filter for flow, temperature and installation point, and verify performance with comparable before-and-after tests. No fixed reduction or milk sterilisation is guaranteed; filtration does not replace heat treatment, antibiotic testing or assessment of the original batch.

LabLog supports laboratories in Uzbekistan with equipment, consumables, commissioning, training and service. Send your required indicators and samples per shift to discuss an appropriate configuration.

The sources below list every standard used in this workflow, covering sampling, composition, antibiotics and inhibitors, acidity, freezing point, density, somatic cells, microbiology, aflatoxins, cleanliness, heat stability, protein and fat.

GOST R 54669-2011 and GOST R 54758-2011 are Russian national standards. GOST 3624-92 has territorial limitations. GOST 5867-2023 replaced GOST 5867-90 in Russia on 1 January 2025: it describes an acid method for milk, while its extraction section concerns cheeses. It cannot automatically be applied to Soxtec and every dairy matrix.

Check scope, current edition and adoption in Uzbekistan before placing a method in the operating procedure. A method standard is not certification of every kit or instrument. ATP, refractometers, strips and filters require product instructions and an established procedure; no universal GOST compliance for the whole configuration is claimed.