Support our Sponsors, they keep FADU free:   AG Photographic   The Imaging Warehouse   Process Supplies   RH Designs   Second-hand Darkroom Supplies  

Notices

Go Back   Film and Darkroom User > Equipment > Darkroom

  ***   Click here for the FADU 2015/2014 Yearbooks   ***

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 15th June 2016, 02:39 PM
Barry's Avatar
Barry Barry is offline
Administrator
 
Join Date: Aug 2008
Location: Mendip Hills, Somerset
Posts: 2,365
Default Pyrocatchetol

If you are a Pyrocat user this may be of interest to you...

Silverprint are now only selling Pyrocatchetol in 500g packs at £37.14. As most users mix only 50g at a time and it does not keep well its a great waste of chemicals and money.

The only option I can see is a 500g buy with someone (me?) splitting it into 50g lots?

Perhaps Ian Grant will comment on the possibility of mixing 500g into Glycol to aid its keeping properties?

I tried a Polish supplier but the chemical was bad.
__________________
Cheers, Barry
Reply With Quote
  #2  
Old 15th June 2016, 02:59 PM
B&W Neil's Avatar
B&W Neil B&W Neil is offline
Friend
 
Join Date: Oct 2008
Location: West Cornwall
Posts: 4,264
Default

Barry,

Just noticed that 100g is available here for 20.70 + other sized packs.


http://www.sigmaaldrich.com/catalog/...FclsGwod92sEoA

Never used this firm myself so I can't speak from experience. They may be worth a punt

Cheers,

Neil.
__________________
"The aim of art is to represent not the outward appearance of things, but their inward significance." Aristotle

Neil Souch
Reply With Quote
  #3  
Old 15th June 2016, 05:34 PM
Barry's Avatar
Barry Barry is offline
Administrator
 
Join Date: Aug 2008
Location: Mendip Hills, Somerset
Posts: 2,365
Default

Thanks Neil,

I will contact them, they may not supply the public?
__________________
Cheers, Barry
Reply With Quote
  #4  
Old 15th June 2016, 06:00 PM
GoodOldNorm's Avatar
GoodOldNorm GoodOldNorm is offline
Friend
 
Join Date: Oct 2009
Location: Lincolnshire UK
Posts: 1,227
Default

If you bought 500g @ £37.14 plus P&P from Silverprint I would be interested in 100g @ cost to you plus P&P to my address.
__________________
"Tea is surely the king of all drinks. It helps against the cold, it helps against the heat,against discomfort and sickness, against weariness and weakness". Heinrich Harrer.
Reply With Quote
  #5  
Old 16th June 2016, 08:19 AM
B&W Neil's Avatar
B&W Neil B&W Neil is offline
Friend
 
Join Date: Oct 2008
Location: West Cornwall
Posts: 4,264
Default

Quote:
Originally Posted by Barry View Post
Thanks Neil,

I will contact them, they may not supply the public?

Barry, very true, I have run into that problem before with some other companies. Best of luck.

Neil.
__________________
"The aim of art is to represent not the outward appearance of things, but their inward significance." Aristotle

Neil Souch
Reply With Quote
  #6  
Old 16th June 2016, 10:17 AM
Lostlabours Lostlabours is offline
Friend
 
Join Date: Apr 2012
Location: West Midlands/Aegean
Posts: 1,988
Default

My experience is that Pyrocatechin keeps reasonably well (over 5 years with no issues), I'd not thought about sissolving it in Glycol.

I've been using Pyrocat HD for over 10 years now, I've only made it up with Glycol once and that was a double strength Part A to take to Turkey (to cut the weight when flying). Normally I just use de-ionised water and the secret is to use reasonably fresh Metabisulphite when making up Pyrocat and also use glass or high density plastic bottles, I use old Ilford or Rodinal developer bottles. It keeps up to 3 years.

I used to have an account with Sigma Aldrich, they are an excellent compoany to deal with. Most chemical suppliers need written confirmation of what chemicals are being used for on headed (company) paper.

Ian
Reply With Quote
  #7  
Old 16th June 2016, 02:48 PM
Barry's Avatar
Barry Barry is offline
Administrator
 
Join Date: Aug 2008
Location: Mendip Hills, Somerset
Posts: 2,365
Default

Quote:
Originally Posted by B&W Neil View Post
Barry, very true, I have run into that problem before with some other companies. Best of luck.

Neil.
They have advised me that they will only deal with companies
__________________
Cheers, Barry
Reply With Quote
  #8  
Old 16th June 2016, 02:49 PM
Barry's Avatar
Barry Barry is offline
Administrator
 
Join Date: Aug 2008
Location: Mendip Hills, Somerset
Posts: 2,365
Default

Quote:
Originally Posted by GoodOldNorm View Post
If you bought 500g @ £37.14 plus P&P from Silverprint I would be interested in 100g @ cost to you plus P&P to my address.
Thanks Norm, if I decide to buy some I will keep you in mind.
__________________
Cheers, Barry
Reply With Quote
  #9  
Old 16th June 2016, 03:34 PM
B&W Neil's Avatar
B&W Neil B&W Neil is offline
Friend
 
Join Date: Oct 2008
Location: West Cornwall
Posts: 4,264
Default

Quote:
Originally Posted by Barry View Post
They have advised me that they will only deal with companies
Oh, well, worth a try - fancy forming up a Ltd company ?


Neil.
__________________
"The aim of art is to represent not the outward appearance of things, but their inward significance." Aristotle

Neil Souch
Reply With Quote
  #10  
Old 16th June 2016, 05:47 PM
Barry's Avatar
Barry Barry is offline
Administrator
 
Join Date: Aug 2008
Location: Mendip Hills, Somerset
Posts: 2,365
Default

Quote:
Originally Posted by Lostlabours View Post
My experience is that Pyrocatechin keeps reasonably well (over 5 years with no issues), I'd not thought about sissolving it in Glycol.

I've been using Pyrocat HD for over 10 years now, I've only made it up with Glycol once and that was a double strength Part A to take to Turkey (to cut the weight when flying). Normally I just use de-ionised water and the secret is to use reasonably fresh Metabisulphite when making up Pyrocat and also use glass or high density plastic bottles, I use old Ilford or Rodinal developer bottles. It keeps up to 3 years.

I used to have an account with Sigma Aldrich, they are an excellent compoany to deal with. Most chemical suppliers need written confirmation of what chemicals are being used for on headed (company) paper.

Ian
Thanks for your comments Ian,

I was concerned as to its keeping qualities, I have had issues in the past. However the last batch I made was a few months ago (in Glycol) and is still as good a new. I was worried about storing the powder as 500g would last me a long time. It's not the money it just seemed a waste.

I'll probably just get some from Silverprint when I need it.
__________________
Cheers, Barry
Reply With Quote
Reply
Support our Sponsors, they keep FADU free:   AG Photographic   The Imaging Warehouse   Process Supplies   RH Designs   Second-hand Darkroom Supplies  

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 11:10 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.