All laboratories that measure data that is submitted to the IGDB (International Glazing Database) must participate in an ILC (Inter-laboratory comparison) every four years. This includes laboratories that were approved after the last ILC (four years ago), i.e. laboratories that were included in between ILCs.
In addition to the IGDB submitters there are other institutes that voluntarily participate.
Goals for ILC 2011
In addition to assuring that all participating laboratories are getting accurate results it also covers two specific problems.
The first is deconstruction of laminates and applied films, care was taken to select samples so that the laminates and the unlaminated samples were from the same production run.
The second problem being studied is measurement of thick samples, the thickest laminates are two 6mm pieces plus the laminating layer.
Instructions as well as example files are found in are found in the attachments section below.
The only change in v1.0 instructions compared to the initial contains recommendations on cleaning.
box0_2.txt is an example of how a measurement file might look.
box0info.txt is an example of how a instrument description file might look.
boxXinfo.txt is an empty copy of the instrument description file.
Preparation for complex glazing ILC
Participants of ILC 2011 will also receive 5 samples with light-scattering/light-redirecting properties. These are not part of ILC 2011 but distributed for a future ILC.