Items tagged with GUIDELINE Files

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Guideline for selection of accelerated corrosion test for product qualification (NT TR 597)

NT TR 597

  • The Guideline in this report has been prepared as a framework for comparing existing accelerated corrosion tests and should be applicable in the choice of best method and procedure for qualification testing of a product with respect to corrosion resistance.

File size: 250.62 KB Download

Performance testing of active noise control (ANC) systems - Guideline (NT TR 487)

NT TR 487

  • This guideline describes a preliminary test method for performance testing of certain active Noise Control (ANC) systems. It sets out requirements for the measurement set-up and representation of the results. The work carried out so far is a first step towards a test method, and this preliminary method can be used as a guideline for testing ANC systems.

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Acoustics: Human sound perception – measurement positions for measurement of loudness (NT ACOU 110)


  • The traditional physical descriptor, the A-weighted sound pressure level, LPA, is often not an adequate objective descriptor for perceived sound.


Nordtest is a trademark of Nordic cooperation in conformity assessment. The emphasis of Nordtest is to develop, promote and innovate Nordic test methods and pre-normative activity. Nordtest endeavours to remove technical barriers to trade and promotes the concept: “Approved once, accepted everywhere”.