Another take on "Acid Free"

jim_p

SGF, Supreme Grumble Framer
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Here's a question for you: can Crescent paper mats at all be considered "acid free"? I believe they're made with buffering so it takes a little longer to develop that rich golden-brown hue on the bevel, but...

Had an artist come in the other day who needed last-minute help with some pieces for an upcoming show. She brought us her pieces that needed fixing, and she said "If it will help, here's some mat board you can use... I got it from [redacted], they said it was acid free". I looked up the part number, and sure enough it was a Crescent paper mat. Question is, did they bear false witness or is there some definition of "acid free" that includes Crescent paper?
 
I think that this goes back to the 80's...Crescent paper mats were/are considered "acid free." But acid free doesn't mean archival. Maybe the question that you are asking is,"Are Crescent paper mats archival?" I don't think so-that's why they have rag. I'm sure that some of you Chemistry lovers can elaborate.
 
As has been pointed out before, ammonia is acid-free.
That does not mean it's good for artwork.
:kaffeetrinker_2: Rick
 
according to crescent on the regular board the core and the back are acid free but not the surface paper and on the rag mats the entire board is acid free.
 
according to crescent on the regular board the core and the back are acid free but not the surface paper and on the rag mats the entire board is acid free.
The point is that, when you are talking about "regular" unpurified woodpulp core, the term acid-free is a semantic trick- basically a lie.*
What they are saying is that the pH measurement is not in the acidic range when the board is manufactured. Unfortunately, that will relatively quickly change due to the lignin content. Another consideration is that the surface papers used on those boards tend to fade dramatically, like kids' construction paper.
:kaffeetrinker_2: Rick

*IMO, the thing that makes it a lie is that matting is usually used for preparing artwork for long-term display, and the "acid-free" state of this kind of board will not remain for the long term. If they are going to make the effort to label the board "acid-free" they should make the additional effort to label it "for temporary, decorative use only... May contribute to long-term deterioration of artwork" or some such cigarette-like advisory warning.
 
The buffered standard paper mats are advertised as acid free by every single seller of them to the artist industry. They are buffered paper plain and simple but this is the battle we fight daily. The local college calls regularly for quotes on matboard and they use the term archival but they mean "acid free" standard paper buffered mats. I have had the conversation in depth with them repeatedly but they continue to refer to them as archival. They purchase directly from United which they are fully qualified and entitled to do but again the mats are listed as acid free.

A huge number of online sellers carry the white core acid free boards. The artists assume they must be the same as alpha celluose at a small fraction of the price leading them to believe that framers are skrewing them to reap huge profits. The only thing we can do as framers is truly educate the public at large and I suggest framers really learn the difference in all of the different boards available. My strategy is to educate them untill their heads are ready to explode.

Start by explaining that the so called acis free is standard wood pulp which is simply cleaned of large inclusions which would show up as chunks and specks. Then Calcium Carbonate is added which is nothing more than tossing in a Tums antacid. Just like when you have heartburn a Tums will eventually wear off and another is neaded. Alpha Celluose paper is refined wood pulp and processed to it's purest form to remove the harmful Lignin from the paper pulp. Once it is in it's purest form it is bleached to achieve the white color and then the Calcium Carbonate is added to keep it in a stable state. Alpha Celluose boards are recognized as being truly archival just the same as 100% cotton rag. 100% Cotton Rag board is manufactured from purified cotton and can be found in both buffered and unbuffered. Certain types of emulsion paper used in photographs react to the buffers in the boards so there are times when unbuffered cotton rag must be used or it will harm the photos as much as standard paper baords.

By the time you have educated your customers as to the differences in the various boards they will not remember what you have told them but they will truly understand that there is a huge difference in each type of board. Once they understand that not all things are equal they will know that the price of each is the best way to cut through the advertising hype. The use of brand names such as Crescent/Bainbridge Paper Mat, Bainbridge Alpha Mat, Crescent Select, Artique, Crescent 100% Rag, Bainbridge 100% Rag, Rising 100% Rag, Peterboro 100% Rag, etc., etc., etc. will leave their head spinning. Show your knowledge and expertise to gain their trust. Often times the customer doesn't care what is being used because the artwork has no value other than to decorate a space but they will know that not all "ACID FREE" is created equal. Make them know they get exactly what they pay for when they purchase mats.
 
I wouldn't call it 'acid-free' because that means 'free of acid' which it is not. It is made of wood pulp which has acid in it. The acid is 'neutralized' by a buffering agent, so it would better be called 'ph-neutral'. But even then, it would more correctly be called 'temporarily ph-neutral' as the acid will eventually overcome the buffer.
 

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Love Peterboro.

You can get most of the colours as decorative buffered as well as conservation alpha cellulose ph neautral.

If they want to save a few dollars the decorative vertion can be subbed and the colour is the same.

How cool is that?

Often they go for the dearer board when they understand it wont bleed and fade as much/as quickly.

Oh but it is not outside they say and I say look what my fluro has done to this decorative board in only a couple of months.

Yep all about the education.
 
I've had this same problem with customers of other
frame shops. I tell them, 'Some framers call these mats
'acid free', but that's misleading. The wood acids have
only been buffered, and can cause acid burning over
many years time.' I call them paper mats instead, and
I tell customers their best bet is to ask for 'conservation'
mats. (Or, if you prefer, archival).
 
Whoa - just had a flashback - thought the thread title was about taking acid.

Whoa.

Mar,

I said "Acid Free", not "Free Acid" :)

FWIW, the only mats I have on display at the shop are conservation-grade: Peterboro Conservation, Crescent Select, and Crescent Rag. I have a box of papermat samples that I use as a doorstop.
 
Love Peterboro.

Me, too. Their line of boards is at least as good as the best from our three major USA suppliers.

The factory in Peterborough, Ontario is about 8 hours' drive north of Ohio. It is ironic that Peterboro is the primary brand in much of your country on the opposite side of the world, but locked out of most USA markets by the dominant competitors here.
 
Jim- Jay Goltz brought Peterboro to my attention, but until recently, I did not have a means of obtaining it cost effectively. Now I have a local supplier and it is priced at cost less than Crescent Select. Their 8 ply rag boards are at least $10 per sheet less than others.

I use a significant amount of SRM boards and the Peterboro white cores are also better priced. Only bummer is that there are no oversized boards available in non-conservation boards and even in their "A" line, the oversized sizes are limited.

Nonetheless, a great quality board at an equally great price.
 
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