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 > Alternative Processes > Alternate printing processes

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

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 15th December 2015, 12:23 AM
robinb robinb is offline
Friend
 
Join Date: Apr 2010
Location: London
Posts: 214
Default Ammonium Dichromate

Hi all

can anybody advise me where i might get some Ammonium Dichromate from

I'm looking at Mike Wares new cyanotype process and it seems i need 0.1g of the stuff
I can find it in 50g packs on amazon but that seems a bit much

anybody got any ideas ?

thanks

robin
Reply With Quote
  #2  
Old 15th December 2015, 10:05 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

If you are trying Mike's new cyanotype process you will probably love it and will want to do more - I did :-)

Dichromates are very hard to source these days so I would order the 50g and keep it in stock, it will come in handy for other alt processes should you decide to try them at a later date.

If you go down this route make up a small amount of the dichromate in to a percentage solution for accurate measurement of the 0.1g. It is critical to get this right for this process.

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 December 2015, 12:38 PM
paulc paulc is offline
Friend
 
Join Date: Jan 2010
Location: Nestled in the foothills of Norfolk.
Posts: 931
Default

If it is only a gramme or two you want, I could measure out a small quantity.... Unfortunately, it is not something that could be posted (I run the risk of losing my job if I tried).
Reply With Quote
  #4  
Old 15th December 2015, 03:12 PM
GoodOldNorm's Avatar
GoodOldNorm GoodOldNorm is offline
Friend
 
Join Date: Oct 2009
Location: Lincolnshire UK
Posts: 1,227
Default

Try http://www.wetplatesupplies.com/cata...ium+dichromate
__________________
"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 15th December 2015, 04:30 PM
Eriktheviking Eriktheviking is offline
Friend
 
Join Date: May 2013
Location: Wick, Caithness, Scotland
Posts: 100
Default

I got my ammonium dichromate from here

http://uklaboratorychemicals.co.uk/

Seem to remember it was a pretty reasonable price.
Reply With Quote
  #6  
Old 15th December 2015, 05:52 PM
Mike O'Pray Mike O'Pray is offline
Friend
 
Join Date: Oct 2008
Location: Daventry, Northants
Posts: 8,968
Default

It appears that wetplate supplies will sell small quantities but you have to be an educational establishment, presumably on safety/fitperson grounds whereas uklaboratory will only sell in the massive quantity of 1KG - well massive if you only need 0.1 g at a time but the good news appears to be that there is no restriction on a "dodgy" chemical if you shop there.

Sounds like the basis for a Marx Brothers film where Hugo Hackenbush, a horse doctor, operates on human patients without restriction, assisted by I think Harpo who has a white coat with "Joe's Quick Fit Brakes" on the back of it

Mike
Reply With Quote
  #7  
Old 15th December 2015, 06:53 PM
Eriktheviking Eriktheviking is offline
Friend
 
Join Date: May 2013
Location: Wick, Caithness, Scotland
Posts: 100
Default

He's the link to UK Labs for a 50g supply

http://uklaboratorychemicals.co.uk/p...-vesuvian-fire

I just added it to the cart and checked out through paypal
Reply With Quote
  #8  
Old 15th December 2015, 10:13 PM
robinb robinb is offline
Friend
 
Join Date: Apr 2010
Location: London
Posts: 214
Default

thanks everybody

I'm trying in vain to stop buying loads of chemicals
but just bought 50g since that seems to be the smallest quantity available
hopefully I'll find a use for it somewhere else

robin
Reply With Quote
  #9  
Old 16th December 2015, 09:26 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

It is probably a bit late now for Robin but this may come in handy for anyone else who is looking in and wants to try this process.

Fotospeed do an excellent kit which includes much more than just the chemicals - worth thinking about if you do not wish to keep a stash of raw chemicals.

But probably more interesting is you can also buy from Fotospeed (and other suppliers) just the sensitiser for around £20 IIRC. The sensitiser contains the dichromate so this avoids the dichromate buying problem. The other chemicals required for Mike Ware's method are easy to find and buy.

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

Neil Souch
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Dichromate solutions numnutz Alternate printing processes 6 25th October 2011 10:19 PM


All times are GMT. The time now is 04:06 PM.


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