FAQ: Where can I find Whiteness Index WI E313-98 in EasyMatch QC Software? Our company is a polyester fiber producer. We just recently started up the factory. And also we started to use our Hunterlab UltraScan Pro. I have question about Whiteness Indices. While I was working for my previous company, I used to use HunterLab LabScan XE where I measure whiteness index by selecting WI E313-98 in the configuration menu. Unfortunately, I could not find WI E313-98 in the configuration menu. I think there is a name change. Could you tell me where I can find Whiteness Index E313 in EasyMatch QC?
Answer:
It would have been helpful if the ASTM E12 Committee on Color and Appearance Measurement responsible for the method, had given the revised 98 WI E313 formula a new ASTM number.
As it has been 16 years since this change was made and most people are using the new WI E313-98 formula, we just call it "WI E313 XX/##" in EasyMatch QC with options for different illuminant/observer combinations for C/2 (historical), D65/2. C/10 and D65/10 (most popular) defined by the method.
You can access WI-E313 for display by putting your mouse over the COLOR DATA TABLE > RIGHT CLICK > PROPERTIES and making a WI E313 selection under "Indices".
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