Subject: Color microforms
I guess I should field the standards question about color fiche. I can't speak for BSI, but I can about ISO. 1) Image permanence standards come in three varieties: a) manufacturing specifications which specify requirements that must be met and, for short test, the test methods. b) Test methods. These are used for long tests that won't fit as part of a specification document. c) Storage practices. These are the ones most familiar to archive people. 2) The American standards (ANSI) in photo are so much more advanced than anyone else's in the world (much as it hurts a Canadian like me to admit such a thing) that to date, all of the ISO photo permanence standards have been ANSI documents with minor word and unit changes. This is why the ANSI sub-committees have members from all over the world including Switzerland, Japan, Canada, UK, and Germany. Only Americans can be members of the full committee. By their membership on these sub-committees, they ultimately play the biggest role possible in shaping the ISO documents that will eventually be created from the ANSI documents. This gives you some idea of the power of ANSI (photo permanence) at ISO and lack of power that the other member countries have. 3) ISO meets only once in three years while ANSI meets at least twice per year. In addition, it takes over a year to get changes in a document from a committee proposal (through ballot, etc.) to a finished publication. Thus even when ISO documents are updated to the most current ANSI document, they are still (often) far behind ANSI. (Again, I'm only talking about photo/image permanence documents) 4) There are no color specification documents in either ISO or ANSI. The most recent color standard was approved last year and is currently being published. This TEST METHOD document took about 11 years to complete. There is no standards that say that color must last a minimum of X number of years. The bottom line is that you should take the advertisement literally. They may very well have contributed to ISO and BSI, but it doesn't say anything about their product (virtually all of the major manufacturers in the world including Fuji, Kodak and Agfa also contribute to the ISO standards.) As an added note, even groups who have members on standards committees tend to stretch things for marketing. I got an ad sent by a colleague in Washington with regard to permanence. The claim: "TOP LIFE EXPECTANCY [XXXXXXX]'s LE rating of 500 is the maximum. So it will last virtually indefinitely, if properly processed and stored to ANSI standards." In truth, the LE500 rating is given to film that meets the ANSI manufacturing specification and is based on life expectancy when processed and stored to ANSI standards. The figure means Life Expectancy 500 (years) and is simply an index number that replaces the old term "archival". The old "long term" film has been replaced by LE100 and "medium term" by LE10. In reality, I HAVEN'T EVER SEEN a modern, wet processed, silver halide film from the MAJOR manufacturers THAT when processed to ANSI standards WON'T MEET the LE500 rating. This ad also implies (to anyone who knows the terms and what they mean) that 500 years is the same as "virtually indefinitely". -Doug *** Conservation DistList Instance 5:52 Distributed: Monday, April 20, 1992 Message Id: cdl-5-52-003 ***Received on Sunday, 19 April, 1992