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Re: Is my Microphen formula correct?

Posted: Mon Aug 06, 2018 8:31 am
by Keith Tapscott.
The formula I have seen which seems most authentic was posted by pentaxpete. He said he got it from an Ilford employee just as they closed their plant in Brentwood IIR correctly. Hopefully he will reply here soon.

Sodium Tripolyphosphate 3.4g
Sodium sulphite 100g
Sodium metabisulphite 0.65g
Hydroquinone 5g
Borax 6.8g
Boric acid 2.8g
Potassium bromide 1g
Phenidone 0.2g
Water to make 1 litre of stock.

Re: Is my Microphen formula correct?

Posted: Mon Aug 06, 2018 11:12 pm
by Ornello
Keith Tapscott. wrote:
Mon Aug 06, 2018 8:31 am
The formula I have seen which seems most authentic was posted by pentaxpete. He said he got it from an Ilford employee just as they closed their plant in Brentwood IIR correctly. Hopefully he will reply here soon.

Sodium Tripolyphosphate 3.4g
Sodium sulphite 100g
Sodium metabisulphite 0.65g
Hydroquinone 5g
Borax 6.8g
Boric acid 2.8g
Potassium bromide 1g
Phenidone 0.2g
Water to make 1 litre of stock.

ID-68:

Sodium Sulphite (anh) 85 g
Hydroquinone 5 g
Borax 7 g
Boric Acid 2 g
Poassium Bromide 1 g
Phenidone 0.13 g
Water to 1 litre

See how similar they are?

Re: Is my Microphen formula correct?

Posted: Tue Aug 07, 2018 7:04 am
by Keith Tapscott.
Ornello wrote:
Mon Aug 06, 2018 11:12 pm
Keith Tapscott. wrote:
Mon Aug 06, 2018 8:31 am
The formula I have seen which seems most authentic was posted by pentaxpete. He said he got it from an Ilford employee just as they closed their plant in Brentwood IIR correctly. Hopefully he will reply here soon.

Sodium Tripolyphosphate 3.4g
Sodium sulphite 100g
Sodium metabisulphite 0.65g
Hydroquinone 5g
Borax 6.8g
Boric acid 2.8g
Potassium bromide 1g
Phenidone 0.2g
Water to make 1 litre of stock.

ID-68:

Sodium Sulphite (anh) 85 g
Hydroquinone 5 g
Borax 7 g
Boric Acid 2 g
Poassium Bromide 1 g
Phenidone 0.13 g
Water to 1 litre

See how similar they are?
Yes, very much so. I suspect it would be very difficult if not impossible to tell the results apart from these two formulas.

Re: Is my Microphen formula correct?

Posted: Fri Aug 10, 2018 1:28 pm
by pentaxpete
yrs -- that IS the Formula I was given many years ago together with the 'Perceptol' one -- I have used it but as i have NO Tripolyphosphate I use de-ionised water as used by Wife for her Steam Iron, not our 'Hard' tap water here in Essex. I use it diluted 1+1.

Re: Is my Microphen formula correct?

Posted: Wed Mar 20, 2019 12:53 pm
by Yak_Forger
I've used this formula and it has worked fine for me with various cameras and types of film, I've developed parts of the same film with commercial microphen and homebrewed one and have obtained similar results.

Thanks for the recipes! I don't always find microphen for sale locally and have to order it online, but at least, now, I know I can do it with what I find in hardware shops.