Key comparison on spectral regular transmittance

Project Description

This key comparison is set up to establish the metrological equivalence of regular spectral transmittance national measurement standards between EURAMET participants and the CCPR-K6 key comparsison reference value.

Progress Report 2023-08-09

2 participants have still not validated their reported results.

• September 2021:
  Pre-draft A Process 1 validated by all partners
• October 2021:
  Pre-draft A Process 2 (Review of uncertainty budgets) send to participants

Progress Report 2021-02-20

• February 2020:
  All measurement results have been collected from the participants
• May 2020:
  Pilot measurements completed
• October 2020:
  Pre-Draft A Process 1 (verification of reported results) send to participants
• January 2021:
  2 participants have still not validated their reported results even after several reminders. Comparison processing is waiting for them

Progress Report 2020-02-04

• Pilot is collecting the measurements results from the participant (expected February 2020)
• Pre-Draft A expected in May 2020

Progress Report 2018-12-18

Four rounds of measurement (pilot-participant-pilot-participant) were completed in September 2018.

• All filters are back at pilot lab in December 2018
• Pilot is collecting the measurements results from the participant (expected 18 January 2019)

Progress Report 2017-01-27

Protocol has been agreed by the partners and sent to CCPR-WP-KC chair on April 22nd, 2016. No reply received yet.

First measurement at pilot lab has started in September 2016 and is still in progress. Because the first measurement at pilot takes more time than expected, it has been agreed with the participants that the first shipment will be cut in 2 separate batches.
1st batch is BelGIM, INM-MD, DMDM, INM, NSC "IM", MIKES
2nd bach is BIM, CMI, GUM, INRIM, IO-CSIC, IPQ, METAS, SP, UME, VSL.
Samples have been sent to 1st batch. Second batch will be completed during January 2017.