+34 91 551 92 52  –  gscsal@gscsal.com

Logo GSC
cropped-logo_gsc.png
Logo GSC

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

FILTERS

Filtered (7)
Filters
Type
Matrix
Preferred Use
Show (7)
Cancel

GSC JUICE/2024

Orange juice

JUICE

M1A: Total acidity (g citric acid/100 mL)(1), Total sugars (%)(1), Density (20ºC/20ºC)(1), Fructose (mg/100 mL)(1), Glucose (mg/100 mL)(1), Brix degrees at 20ºC (°Brix), Sucrose (mg/100 mL)(1)

M1B: Sulfur dioxide (mg/L)(1)

GSCAR-1 2025

Wastewater

Wastewater

MA: COPPER (mg/L), TOTAL CHROMIUM (µg/L Cr), COD (mg O2/L), PHOSPHATES (mg/L), FLUORIDES (mg/L), TOTAL PHOSPHORUS (mg/L P), IRON (mg/L Fe), MERCURY (µg/L Hg), NITRATES (mg/L), AMMONIUM NITROGEN (mg/L N), KJELDAHL NITROGEN (mg/L N), TOTAL NITROGEN (mg/L N)

MB: CHLORIDES (mg/L as chloride ion), CONDUCTIVITY AT 25ºC (µS/cm), BOD5 (mg O2/L), pH (upH)

MC: SUSPENDED SOLIDS (mg/L)

GSCAR-2 2024

Wastewater

Aguas residuales

MA: ARSENIC (mg/L), CADMIUM (mg/L), COT (mg/L), ANIONIC DETERGENTS (mg Sodium Lauryl Sulfate/L)(1), COD (mg O2/L), PHENOLS (mg/L)(1), LEAD (mg/L),

MB: CHROMIUM VI (mg/L)(1)

MC: BOD5 (mg O2/L)(1)(3), pH (upH)(2)

MD: CHLORIDES (mg/L), CONDUCTIVITY AT 25 ºC (mS/cm)(2), SUSPENDED SOLIDS (mg/L)(4)

ME: CATIONIC DETERGENTS (mg/L)(1)

GSCAR-3/2024

Wastewater

WASTEWATER

MA: COD (mg O2/L)(5), TOTAL PHOSPHORUS (mg/L P), MERCURY (µg/L Hg), NICKEL (µg/L), KJELDAHL NITROGEN (mg/L N), ZINC (µg/L)

MB: CONDUCTIVITY AT 25 ºC (µS/cm) (3), BOD5 (mg O2/L) (1)(2), PH (upH) (3)

MC: SUSPENDED SOLIDS (mg/L) (4)

ME: BARIUM (mg/L), TIN (mg/L)

GSCAR-4 2024

Wastewater

Wastewater

M1: TOXICITY (INHIBITORY SUBSTANCES), EQUITOX

M2: TOXICITY (INHIBITORY SUBSTANCES), EQUITOX

GSCMPA-1/2024

Swordfish

Heavy metals in food

M1: Arsenic (mg/kg) Cadmium (mg/kg) Copper (mg/kg) Tin (mg/kg) Iron (mg/kg) Manganese (mg/kg) Mercury (mg/kg) Lead (mg/kg) Zinc (mg/kg)

GSCNI/2023

Lettuce

NITRATOS EN FRUTAS Y HORTALIZAS

M1: Nitrates (mg/kg)*

btn-scroll-form
91 551 92 52  –  gscsal@gscsal.com