Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 71,860   Posts: 1,583,159   Online: 741
      
Page 3 of 3 FirstFirst 123
Results 21 to 22 of 22
  1. #21

    Join Date
    May 2005
    Location
    Woonsocket, RI USA
    Shooter
    35mm
    Posts
    2,725
    Quote Originally Posted by dancqu
    That's easy to believe. I do feel safe buying from
    Photographer's Formulary. They are many years in the
    business of being a specialty supplier to darkroom workers.

    They have the anhydrous and the penta thiosulfates.
    Pay for three pounds of the penta or two pounds of the
    anhydrous. With the penta a pound of water is
    included at no extra charge.
    Actually, the "no extra charge" water actually costs a negative amount. Because PF doesn't sell 2 and 3 pound quantities, I can't compare those; but for 10-pound quantities the costs are $55.50 for anhydrous vs. $29.95 for pentahydrate (crystalline). That's $5.50/pound for anhydrous vs. $3.00/pound for pentahydrate; or adjusting for the "no extra charge" water, the 10 pounds of pentahydrate is equivalent to just 6.4 pounds of anhydrous, so the cost is $4.68/pound equivalent -- $0.82/pound less for the pentahydrate form. That doesn't consider shipping costs, though, which will eat into the cost advantage for the pentahydrate. I've also not checked the equivalences for most other sizes.

    FWIW, although the Chemistry Store Web page is unclear at best about the form of their sodium thiosulfate, their cost is $17.70 for a 10-pound pail of the pentahydrate form, or $2.77/pound for anhydrous-equivalent. Again, this doesn't consider shipping.

    Also FWIW, by my calculations, typical sodium thiosulfate fixers cost about $2.50-$3.50 per liter using Chemistry Store chemicals, including shipping. This contrasts to about $2.00-$3.00 per liter for similar commercial fixers (again, including shipping), so mixing your own sodium thiosulfate fixer doesn't make financial sense unless you can find sodium thiosulfate for much less than even the Chemistry Store price.

  2. #22
    lee
    lee is offline
    lee's Avatar
    Join Date
    Nov 2002
    Location
    Fort Worth TX
    Shooter
    8x10 Format
    Posts
    2,913
    Images
    8
    have yall considered Mike at Artcraft for say like 50 lbs?


    lee\c

Page 3 of 3 FirstFirst 123


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin