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March 2011 |
The availability of Blue Wool Reference No. 1-8 is guaranteed for the future!
The stock of dye “C.I. Acid Blue 109” corresponding ISO 105-B02, table 1 has been replenished with a new batch of dye.
The Blue Wool Reference No. 2 for colour fastness tests to artificial light according to ISO standards ISO 105-B02 or ISO 105-B04 is furthermore safe and can be ordered from the partners of DEK “German Colourfastness Committee”. The Blue Wool Reference No. 2 meets all requirements of the referring ISO documents.
Please note the following remarks
FAQ
Q 1:
Is the new synthesized batch of dye No. 2 equivalent to dyestuff “C.I. Acid Blue 109” named in table 1 of ISO 105-B02?
A:
Yes, the dye is in accordance with ISO 105-B02.
Q 2:
The apparent colour of the new produced Blue Wool Reference No. 2 is similar to Blue Wool Reference No. 1. What is the difference?
A:
A new batch of dyestuff for Blue Wool Reference No. 2 has been produced. Combined with the shade of the wool fabric the new Blue Wool Reference No. 2 seems to be less brilliant in colour and therefore similar to Blue Wool Reference No. 1. Indeed Blue Wool Reference No. 1 and Blue Wool Reference No. 2 contain two totally different dyestuff molecules with different fading behavior.
Q 3:
Is the fading behavior of the new Blue Wool Reference No. 2 comparable to the old Blue Wool Reference No. 2?
A:
Yes, the fading behavior of the old and new Blue Wool Reference No. 2 is identical. This has been confirmed during lightfastness test series in several accredited institutes.
Q 4:
What caused the delays in supply of the Blue Wool Reference No. 2?
A:
The Blue Wool Reference No. 2 ran out of stock and a new batch had to be produced. DEK is aware of its responsibility for the quality of the standard reference materials sold. Therefore the conformity to the existing ISO standards was tested and proofed in extensive test series.
Deutsche Echtheits-kommission - DEK e.V. & GmbH
Elly-Heuss-Knapp-Platz 4
53844 Troisdorf
Germany
