Is my Microphen formula correct?

Film Photography & Darkroom discussion

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Keith Tapscott.
Posts: 515
Joined: Tue Jan 17, 2006 8:58 am
Location: Plymouth, England.

Re: Is my Microphen formula correct?

Post by Keith Tapscott. » 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.


Ornello
Posts: 863
Joined: Thu Jan 19, 2006 9:49 am

Re: Is my Microphen formula correct?

Post by Ornello » 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?

Keith Tapscott.
Posts: 515
Joined: Tue Jan 17, 2006 8:58 am
Location: Plymouth, England.

Re: Is my Microphen formula correct?

Post by Keith Tapscott. » Tue Aug 07, 2018 7:04 am

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.

pentaxpete
Posts: 87
Joined: Thu Jan 12, 2006 7:19 am
Location: BRENTWOOD,Essex,(UK)

Re: Is my Microphen formula correct?

Post by pentaxpete » Fri Aug 10, 2018 1:28 pm

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.
Got COMPUTERISED and 'slightly Digitised Pentax K10D' but FILM STILL RULES !

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