Physicochemical testing

Physicochemical testing of dietary supplements provides the necessary information on the product’s composition, the presence of micro and macroelements, vitamins, impurities (e.g. the level of heavy metals, pesticide residues, polycyclic aromatic hydrocarbons or dioxins) and additional substances. Thanks to testing, you can check whether the product meets the legal requirements of a market, regarding the content of impurities and/or the limits for active substances.

We offer physicochemical analysis for dietary supplements, herbs and vegetal raw materials. The tests we perform include:

  • pyrrolizidine and tropane alkaloids
  • protein
  • dry weight
  • humidity
  • fat
  • capsule/filling weight
  • acid number and fat number
  • net weight
  • sugars
  • dietary fibre
  • nutritional value.

Using modern equipment and instrumental methods, we determine:

  • vitamins B content, including folic acid
  • vitamins A, E, D3, K content
  • vitamin C content
  • content of mineral ingredients: chromium (Cr), zinc (Zn), tin (Sn), phosphorus (P), cobalt (Co), magnesium (Mg), manganese (Mn), copper (Cu), molybdenum (Mo), potassium (K), selenium (Se), sodium (Na), calcium (Ca), iron (Fe), silicon
  • fatty acid profile, including Omega 3, DHA, APA
  • aminoacids
  • polycyclic aromatic hydrocarbons (PAHs)
  • heavy metals: cadmium (Cd), lead (Pb), mercury (Hg), arsenic (As)
  • pesticide content
  • mycotoxins: aflatoxin B1, B2, G1, G2, M1, ochratoxin A, deoxynivalenol, zearalenone.

Heavy metals

Heavy metals are an example of contaminants that penetrate into food and feed products to a significant extent from the surrounding environment. According to available literature, plants and products of plant origin, such as bread and all cereal products, fish and seafood, are most vulnerable to contamination.

The heavy metals most frequently associated with the development of health problems are cadmium, lead, mercury and arsenic. Long-term exposure to elevated levels of these elements may cause an increased risk of cancer and nervous system disorders, as well as immune system dysfunction.The primary source of migration of heavy metals into the environment is industrial dust and wastewater discharged into waterways and ultimately entering the food chain. Many metals can enter food as industrial by-products and waste.

Maximum levels for heavy metals in foodstuffs and animal feed are regulated and contained in the relevant legislation. In the case of foodstuffs, there is Commission Regulation (EC) No 1881/2006 of 19 December 2006 setting maximum levels for certain contaminants in foodstuffs, as amended, which also sets requirements for tin in canned foodstuffs. For animal feed, the limits are set out in Directive 2002/32/EC of the European Parliament and of the Council of 7 May 2002 on undesirable substances in animal feed, as amended.

Investigations into heavy metals levels are carried out at the J.S. Hamilton Poland Laboratory in Gdynia and the Hamilton UO-Technology in Słomczyn with the use of appropriately developed research methodologies – based on the guidelines of Polish and international standards, as well as own research procedures. The most frequently used are the technique of inductively coupled plasma atomic emission spectrometry (ICP-OES) and inductively coupled plasma ionisation mass spectrometry (ICP-MS).

Should you want to check your food or feed for metal content, contact our team and schedule tests with us.

Additional approvals and certificates

For food manufacturers, the safety of their products – and the health and satisfaction of their consumers – are a priority. To secure both – and to conduct their business activity – they need to obtain a variety of approvals and certificates. We discuss some of them here – and explain how we can help in every respective field.

 

GMP+

The GMP+ feed safety system was developed in 1992 in the Netherlands, where, after numerous cases of contaminated feed, the demand grew for an increased level of safety throughout the feed sector. Therefore, safety standards were developed at every stage, i.e., production, trade, transport, handling and storage of feed and feed additives. This means that GMP+ standards were also extended to all subcontractors, including testing laboratories

GMP+ certified companies in the feed production sector are obliged to commission analyses to a laboratory that is GMP+ certified or has an equivalent quality system, e.g., compliant with PNEN ISO/IEC 17025:2018-02 (ISO/IEC 17025:2017). Our laboratory meets the above requirements as confirmed by the PCA accreditation certificate number AB 079.

With critical feed contaminants such as:

  • aflatoxin B1,
  • dioxins, dioxin-like PCBs, non-dioxin-like PCBs,
  • heavy metals,
  • fluorine,

GMP+ certified companies must use laboratories that are placed on the Registered Laboratories list, which our laboratory has already been on since 2018.

 

VLOG

Another method to secure compliance with safety standards is the VLOG system. It was initiated by the German Association for Foods without Genetic Engineering (Verband Lebensmittel ohne Gentechnik), which sets standards for the production of GMO-free food and applies to animal products, cereals, fruit and vegetables and feed, covering all stages from production in the broadest sense through to storage and transport.

Since 2019, laboratories that wish to perform GMO analyses for companies in the feed and food production under the VLOG system must be recognised by VLOG as VLOG-recognized laboratories. Our laboratory has passed the registration procedure and is now listed in the register.

 

FRUIT MONITORING

Fruit Monitoring is a German system for monitoring pesticide residues in fruit and vegetables, managed by HDE Trade Services GmbH (HTS), for trading companies: Dohle, EDEKA/Netto MD, Globus, METRO (Real, METRO Cash & Carry), Norma, and REWE.

Laboratories aspiring to join the scheme must meet the following minimum standards:

  • accreditation in accordance with ISO/IEC 17025:2017 in the country of the testing laboratory. The methods used must fall within the scope of the accreditation and the accreditation must relate to products tested within the Fruit Monitoring programme. There are three types of laboratory approval: A, B and C. Laboratory A must be able to analyse at least 80% of the minimum (standard) range of listed substances in fresh fruit and vegetables.
  • regular participation in proficiency tests.

The results of laboratory tests for pesticides in fruit and vegetables carried out within Fruit Monitoring are entered into the central system fruitmonitoring.com, where they are analysed with respect to product, product group, origin and active substances.

The scope of accreditation by PCA and positive results of proficiency testing enabled the Hamilton UO-Technology Laboratory in Słomczyn to become an approved laboratory in the Fruitmonitoring system.

GMP+, VLOG and Fruit Monitoring are just three methods of securing the compliance of your food products with regulations. If you would like to learn more about these – or test your products for necessary compliance – do not hesitate to get in touch with the specialists of J.S. Hamilton.