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Old 4th March 2021, 10:34 PM
Nat Polton Nat Polton is offline
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Default Ilford Formulas and Packed Chemicals. 14th edition errata.

I have just watched Peter Elgars Youtube video on mixing developers from raw chemicals.
He used 100g of sodium sulphite in ID11.
Yesterday I was looking at Ilfords formula booklet and there is a whopping big error in the Ilford booklet.
There are plenty of links on the internet to Ilfords book of formulas

"Ilford Formulas and Packed Chemicals."

http://www.darkroomdave.com/wp-conte...e-Dev-1953.pdf

I was checking the ID11 formula and saw that on page fourteen in the 1953, 14th edition it has 200g of sodium sulphite instead of 100g.

A couple of other editions that I found had the correct amount.

I wonder how many people have gone adrift over almost seventy years of this error being out there?

Cheers.
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Old 5th March 2021, 12:32 AM
Nat Polton Nat Polton is offline
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Big error on my behalf.
One formula is for anhydrous and the other is crystal.
Hence one uses twice as much by weight.
Sorry.
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Old 5th March 2021, 11:13 AM
Mike O'Pray Mike O'Pray is offline
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Easily done, Nat, such things can happen when delving into information on a screen.

For whatever reason but probably my psyche and the era I am from, I am just not geared up to reading a screen in the same way as written text. I find it much more difficult to (a) follow screen text and (b) spot errors in it.

The only kindle I really know about is that which my parents did with paper and wood before adding the coal

Mike
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Old 5th March 2021, 12:24 PM
Terry S Terry S is offline
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Originally Posted by Nat Polton View Post
Big error on my behalf.
This is why I try not to post anything on the internet after 6pm Nat, as my brain has started shutting down for the night by then, and I'm starting to relax and eventually go to bed.

That's not to say that I don't post any boo-boo's in the daytime though - because I have been known to!

Terry S
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Old 5th March 2021, 01:06 PM
Terry S Terry S is offline
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Just re-reading the PDF, I noticed the instructions, 'For press use' a few times. This meant using the solutions undiluted and at full strength.

What would the reason be for this? I can only think that it would make the development time (slightly?) quicker and / or maybe gave more contrast to a print?

Can anyone confirm this or give another reason?

Terry S
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Old 5th March 2021, 03:00 PM
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Quote:
Originally Posted by Mike O'Pray View Post
Easily done, Nat, such things can happen when delving into information on a screen.

For whatever reason but probably my psyche and the era I am from, I am just not geared up to reading a screen in the same way as written text. I find it much more difficult to (a) follow screen text and (b) spot errors in it.

The only kindle I really know about is that which my parents did with paper and wood before adding the coal

Mike
I definitely concur with this. For many years I printed anything important out to proof-read it. I got better at it and stopped doing that, but for years after I started using computers back in the day I could not trust myself to read critically off a screen. It was very odd: obvious howlers would spring off the page once committed to paper that were completely invisible on-screen.
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