Do you need control materials to validate your methods or carry out your quality control?

In addition to organizing proficiency testing schemes, we provide you with leftover samples from proficiency testing rounds in the agri-food and environmental fields. These are available for laboratories that wish to develop internal quality controls with safe samples. All of them come with a certificate that includes:

  • Assigned value and associated uncertainty, and the number of laboratories assigning it
  • Details about the nature of the sample, representative of the matrices commonly analyzed

GSCCA-1/2025

Fishery Product (Crab Meat)

Food Preservatives

M1: SODIUM METABISULFITE (SULFUR DIOXIDE) (MG/KG SO₂)

GSCMEAT/2024

Turkey breast

M1A: Water activity, Ashes (%), Total phosphorus (mg/kg P2O5), C16:0 Palmitic acid (%), C16:1 Palmitoleic acid (%)*, C18:1 Oleic acid (%), C18:2n6 Linoleic acid (%), C18:3n3 Linolenic acid (%)*, Monounsaturated fatty acids (%), Polyunsaturated fatty acids (%), Saturated fat (%), Fat (%), Carbohydrates (%), Hydroxyproline (%)*, Moisture (%)(1), pH (pH units), Crude protein (N% x 6.25) (%), Salt (g/100g NaCl), Sodium (%), Energy value (kcal/100g)

M1B: Nitrates (mg/kg Sodium nitrate), Nitrites (mg/kg Sodium nitrite)(1)

GSCNI/2023

Lettuce

NITRATOS EN FRUTAS Y HORTALIZAS

M1: Nitrates (mg/kg)*

GSCNU 2024

Prepared dish (Chickpea salad)

Nutritional composition in foods

M1: Total sugars (% w/w), Calcium (mg/100g)*, Ashes (% w/w), Energy (kcal/100g)*, Dietary fiber (% w/w)*, Total phosphorus (mg/100g)*, Crude fat with prior hydrolysis (% w/w), Saturated fats (% w/w)*, Metabolizable carbohydrates (% w/w)*(2), Total carbohydrates (% w/w)*(2), Moisture (% w/w)(1), Crude protein (N × 6.25) (% w/w), Sodium (mg/100g)