Page 1 of 1

Re: Is my Microphen formula correct?

Posted: Mon Jun 03, 2013 2:37 pm
by Ornello
ID-68 is the one to use.

http://www.digitaltruth.com/data/ilford_id68.php

http://www.lostlabours.co.uk/photograph ... evID68.htm

This stuff is all over the internet. Nothing new here.

Re: Is my Microphen formula correct?

Posted: Tue Jun 04, 2013 2:17 am
by Keith Tapscott.
The formula for Microphen has never been in the public domain and neither has it's replenisher. Glycin is not mentioned in the MSDS.

Ilfotec DDX and the dip & dunk developer Ilfotec DD take Microphen, Autophen and the published ID-68 relative to it's next logical stage as liquid concentrates. Microphen will most likely remain a trade secret.

As Ornello mentioned, try ID-68.

Re: Is my Microphen formula correct?

Posted: Tue Jun 04, 2013 2:28 am
by Keith Tapscott.
By the way, Phenidone is used in Micro-PHEN (hence it's name )and requires hydroquinone as a super-additive agent. Phenidone on it's own has poor keeping and produces very low contrast without it.

Re: Is my Microphen formula correct?

Posted: Tue Jun 04, 2013 9:15 am
by Ornello
Microphen is most likely a refined version of ID-68, perhaps with additives for buffering and a slightly different proportion of phenidone and hydroquinone.

Re: Is my Microphen formula correct?

Posted: Sat Aug 03, 2013 8:50 pm
by KennyE
Two of my earlier post were deleted due to error. But I ask the question, "Is my Microphen Formula is correct. And the answer is no it was not.

Photographic Possibilities: The Expressive Use of Ideas, Materials and Processes: By Robert Hirsch, John Valentino, list on page 75 the Microphen formula. That same formula is also listed in "The Amateur Photographer's Handbook" 8th edition on page 375, by Aaron Sussman.

Water 750ml
Sodium Sulfite 100 grams
Hydroquinone 5 gram
Borax 3 gram
Boric Acid 3.5 gram
Phenidone 0.3 gram
Potassium Bromide 1 gram
Water to make 1 Liter

Thank You

KennyE

Autophen

Posted: Mon Aug 05, 2013 7:19 am
by IanG
The Formula for Autophen an Ilford photo-finishing developer itself a variant of ID-11 is:

Sodium Sulphite 100 g
Hydroquinone 5 g
Borax 3 g
Boric Acid 3.5 g
Phenidone 0.2 g
Potassium Bromide 1 g
Water to 1 litre

This has been mistakenly listed as Microphen in many US publications.

Ian

Re: Is my Microphen formula correct?

Posted: Tue Aug 06, 2013 11:56 am
by KennyE
Hello Ian, how are you today?

A few years back, Keith made the post sited below, on another thread dealing with this same subject. Do you happen to know what the formula listed below is? It is not like any Microphen formula that I have seen. It got my interest because Edward Lowe like to include T.S.P., in many of his formulas, like those in his famous 1939 book. Could this be one of his unknown formulas?

Hydroquinone with Metol and Phenidone.
Keith Tapscott. ยป Sun Jun 06, 2010 9:23 am
I saw this formula on a web site which is claimed to behave identically to Ilford Microphen, although I can not verify that. I did not see a formula for a replenisher though.
Pentax-Pete who post here sometimes might know.

Sodium Tripolyphosphate 3.4 gms
Sodium Sulphite anhyd 100.0gms
Sodium Metabisulphite 0.65 gm
Hydroquinone 5.0 gms
Phenidone 0.2 gm
Boric Acid 2.7 gms
Borax 6.8 gms
Potassium Bromide 1.0 gm
Water to make 1 Litre

Thank You

KennyE

Re: Is my Microphen formula correct?

Posted: Wed Aug 07, 2013 5:00 am
by IanG
It's just one of Ilford's PQ variants of ID-11. It may well have been the formula for a powdered version of Autophen. It was quite common to use Metabisulphite as a preservative to prevent oxidisation of the developing agents (usually Part A) in the packaging, both Ilford & Kodak have done this with various powder developers.

Ian

Re: Is my Microphen formula correct?

Posted: Thu Aug 08, 2013 5:05 pm
by KennyE
Thank You Ian, I will make a note of that information it in my research.

Thank You

KennyE

Re: Is my Microphen formula correct?

Posted: Mon Jun 18, 2018 12:22 pm
by KennyE
I swear..., I will never give up on anyone or anything.

Through my research looking for information dealing with other subjects. I came across information on Ilford's "Microphen" formula. At first, I did not paid much attention to it, until Ilford's name came across it. Then Kendall, Axford, and others were mention in the text.

I sat the text aside, got a tall glass of ice apple juice and sat again and started reading the article again.

The article was a United States Air Force article on using and developing film for use at Wright Patterson Air Force Base. Which we all know was the first Area 51.

It was talking about the use of Kodak Royal X Pan sheet film and its development and the best use of a good developer. They mention that they once used Panthermic 777 developer. But that the company had closed and its owner (Harold L. Harvey) had past away earlier that year (January 1971).

By the way, the article was dated October 14, 1971. But posted December 11, 1973

Later in the article they starting talking about the Filmline S90 Spray processor and the developers used.

The article states that the USAF obtained the Ilford Microphen formula for their use for tank and spray processor use.

Here is the formula:

Phenidone 2.0 garms
Sodium Sulfite 40 grams
Glycin 10 grams
Sodium Bisulfite 25 grams
Sodium Metaborate 25 grams
Water to make 1 liter

So Keith, you stated earlier that there was no Glycin mention in the papers you reviewed, well it shows that there may be some after all.

The article list Great Britain Patent #761,301, I can not get that patent, my membership has expired. But maybe you can.

The article was written by Simeon Braunstein USAF Research Admin.

If you get the time, can you assist me with the GBP, so I can see if this article is correct in any form.

And yes it list a replenisher as well. It is the same as the formula, but the sodium metaborate is 50 grams, everything else is the same.
Tank development @ 12min 68F., processor @ 2min 85F.

Thank you

KennyE