title: [Fundamental aspects for accrediting medical equipment calibration laboratories in Colombia].
abstract: OBJECTIVE
  Analysing the fundamental methodological aspects which should be considered when drawing up calibration procedure for electro-medical equipment, thereby permitting international standard-based accreditation of electro-medical metrology laboratories in Colombia.
  
  
  METHODS
  NTC-ISO-IEC 17025:2005 and GTC-51-based procedures for calibrating electro-medical equipment were implemented and then used as patterns.
  
  
  RESULTS
  The mathematical model for determining the estimated uncertainty value when calibrating electro-medical equipment for accreditation by the Electrical Variable Metrology Laboratory's Electro-medical Equipment Calibration Area accredited in compliance with Superintendence of Industry and Commerce Resolution 25771 May 26th 2009 consists of two equations depending on the case; they are: E = (Ai + sigmaAi) - (Ar + sigmaAr + deltaAr1) and E = (Ai + sigmaAi) - (Ar + sigmaA + deltaAr1).
  
  
  CONCLUSIONS
  The mathematical modelling implemented for measuring uncertainty in the Universidad Tecnológica de Pereira's Electrical Variable Metrology Laboratory (Electro-medical Equipment Calibration Area) will become a good guide for calibration initiated in other laboratories in Colombia and Latin-America.
authors.affiliation: Facultad de Ciencias Básicas, Departamento de Física, Universidad Tecnológica de Pereira, Colombia.
authors.forename: Luis E
authors.initials: LE
authors.lastname: Llamosa-Rincón
authors.forename: Giovanni A
authors.initials: GA
authors.lastname: López-Isaza
authors.forename: Milton F
authors.initials: MF
authors.lastname: Villarreal-Castro
mesh_terms: D000068:Accreditation; D002138:Calibration / Q000592:standards*; D003105:Colombia; D055615:Electrical Equipment and Supplies / Q000592:standards*; D007753:Laboratories / Q000592:standards*; D008433:Mathematics; D015203:Reproducibility of Results