At PREMIUMLAB, we are specialists in highly demanding analyses, such as those sought by the infant nutrition sector, one of the sectors with the strictest regulations.


At PREMIUMLAB, we have 75 years of experience in specialist infant and geriatric food analyses, two of the sectors with the strictest regulations. As a result, we have developed specific techniques to offer maximum reliability in the services we offer.

Our laboratory is divided into three areas:


In Microbiology, we carry out more than 100,000 analyses each year on a very wide range of parameters.

To achieve this, we have cutting-edge facilities and equipment, for example, real-time PCR, in addition to specialist and qualified human resources.

This enables us to process a large volume of samples, obtaining highly reliable results in the shortest possible time.

The techniques we perform include but are not limited to:

  • Detection of Salmonella spp. by real-time PCR
  • Detection of Cronobacter spp. by real-time PCR
  • Detection and plate counting of other pathogenic microorganisms and indicators: Salmonella, Listeria, Enterobacteriaceae, Coliform, Bacillus Cereus, etc.
  • Control of surface hygiene and environmental analysis.

The methods employed in our laboratory are based on ISO standards and alternative ISO 16140 certified methods.

UNE-EN ISO/IEC 17025 accredited methods for the microbiology area can be consulted within our scope of accreditation.


The Chromatography area analyses multiple parameters and boasts cutting-edge equipment: GC-FID, HPLC- UV/DAD, UHPLC-MS/MS, HPLC-FLD, HPAEC-PAD and highly qualified staff that allows us to offer services with high added value.

Using Gas Chromatography with Flame Ionisation Detector (GC-FID), we analyse the composition of fatty acids and other volatile compounds.

Using HPLC-DAD and HPLC-FLD we separate and quantify compounds such as water-soluble and liposoluble vitamins, other compounds of a nutritional interest and pollutants.

The Ultra High-Performance Liquid Chromatography tandem mass spectrometer (UHPLC-MS/MS) technique is used to analyse traces of aflatoxins, acrylamides, chlorates and perchlorates and other compounds at very low concentrations.

Using HPAEC-PAD, we analyse sugar profiles and lactose content at very low concentrations for “lactose-free” products.

In short, in the chromatography department we analyse many compounds that are of a nutritional interest, such as vitamins, sugars, products with a low lactose content, nucleosides and nucleotides, α-Lactalbumin + β Lactoglobulin, fatty acids and others, in addition to important pollutants such as mycotoxins (aflatoxins and other compounds) and acrylamide.

Furthermore, we have a department for analytical development that allows us to set up new methods or adapt current methods to matrices with special features.

UNE-EN ISO/IEC 17025 accredited methods for the chromatography area within our scope of accreditation can be consulted through this link.


The Physicochemical department carries out more than 50,000 analyses each year on a catalogue of more than 125 different parameters. We have a team of highly qualified and versatile professionals that helps us to obtain results with outstanding efficacy.


This area uses classic wet chemistry techniques such as Kjeldahl for the determination of proteins, extraction of fat by Soxhlet, ashes, weight loss, analysis of anions, cations and other compounds using potentiometry and other related techniques.

We also use instrumental techniques Including Near Infrared (NIR) spectroscopy to determine nutritional parameters. UV–Vis Spectrophotometry to quantify nitrates and nitrites in foods, choline and Free L-Carnitine, ethanol for “alcohol-free” products and a range of enzymatic-spectrophotometric techniques used, for example, in the determination of allergens.

Traces of heavy metals (Cd, Pb, As, Hg) and others (Sn, Ni, Cu, etc.) are analysed using the Inductively coupled Plasma Mass Spectrometry (ICP-MS), which makes it possible to characterise and quantify these and other metallic elements at very low concentrations.

To quantify minerals of nutritional interest and trace elements, we use the Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) technique.

PREMIUMLAB, for the determination of allergens, uses ELISA techniques of high sensitivity and specificity as well as consolidated suppliers, performing determinations with a fully automated system. This is carried out in a work environment that has been specially conditioned for ELISA determinations.

UNE-EN ISO/IEC 17025 accredited methods for the Physicochemistry area can be consulted within our scope of accreditation.

Sensorial Analysis

Our facilities are equipped with a room specially conditioned to perform organoleptic trials for the assessment of parameters such as colour, smell, flavour, etc. and for carrying out triangular trials based on ISO 4120 with a team of specially trained tasters.