Effluent Analysis Laboratory

The Effluent Analysis Laboratory, dependent on the Services Department of the Faculta de Ciencias Exactas y Naturales, was created in 2015, according to the Minute Nº 8 (S.L. 04/24/2015) and Resolution Nº 0301-2015, with the aim of having a laboratory of characterization for effluents and offering technical support to address the problem of liquid effluents in the country.

The laboratory adjusts to the legal requirements pertinent to the treatment and monitoring of effluents prior to their release to a sanitary sewage system or a receiving natural water body.

The services of the laboratory extend to all types of liquid effluents, such as industrial, pharmaceutical, and hospital effluents, domestic wastewater, among others. The laboratory also performs effluent sampling.

The Laboratory of Effluent Analysis has earned an NP-ISO/IEC 17025:2006 certification for compliance with the “General requisites for the competence of testing and calibration laboratories,” granted by the Organismo Nacional de Acreditación (ONA), on March 28th, 2016; certificate Nº ONA-CA/LE022.

The laboratory performs assays according to the regulations established by the Resolution Nº 222/02 from SEAM and the Law Nº 1614/2000, in force in Paraguay.

Assays performed according to Resolution Nº222 from the Secretaría del Ambiente (SEAM)
  • pH
  • BOD5
  • COD
  • Temperature
  • Sedimented solid content
  • Fats and oils content
  • Ammoniacal nitrogen content
  • Soluble iron content
  • Cadmium content
  • Cyanide content
  • Lead content
  • Copper content
  • Hexavalent chromium content
  • Total chromium content
  • Phenol content
  • Total Kjeldahl nitrogen (TKN)
  • Total iron content
  • Manganese content
  • Mercury content
  • Nickel content
  • Silver content
  • Sulphate content
  • Zinc content
  • Faecal coliform content
Assays performed according to the Law of creation of the Ente Regulador de Servicios Sanitarios (ERSSAN), Nº 1614/2000
  • pH
  • BOD5
  • COD
  • Temperature
  • Sedimented solid content
  • Suspended solid content
  • Fats and oils content
  • Sulphide content
  • Soluble iron content
  • Cadmium content
  • Cyanide content
  • Lead content
  • Copper content
  • Hexavalent chromium content
  • Silver content
  • Total chromium content
  • Phenol content
  • Total Kjeldahl nitrogen (TKN)
  • Total iron content
  • Manganese content
  • Mercury content
  • Nickel content
  • Total hydrocarbon content
  • Detergents
  • Sulphate content
  • Zinc content
  • Faecal coliform content
Other assays
  • TDS
  • TS
  • Volatile solid content
  • Conductivity
  • Chloride content
  • Nitrite content
  • Nitrate content
  • Color
  • Turbidity
  • Total phosphate and orthophosphate content
  • DO
  • Aggressive CO2 content
  • Sodium content
  • Alkalinity

THE LABORATORY DOES NOT RECEIVE SAMPLES for BOD5 determination on Mondays and Tuesdays, and for bacteriological determinations on Fridays.

Info and contact

Head of the Laboratory: Lic. Elsa Cárdenas

Address: Ruta Mcal. Estigarribia, Km 11, Campus Universitario, UNA, San Lorenzo, Paraguay

Email: labefluentes@facen.una.py

Phone: + (595 21) 585-602 Ext. 247

Opening hours: Samples are received from Monday to Friday, from 08:00 am to 01:00 pm.