Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,295   Posts: 1,535,607   Online: 1125
      
Page 3 of 4 FirstFirst 1234 LastLast
Results 21 to 30 of 40
  1. #21
    PeterB's Avatar
    Join Date
    Apr 2005
    Location
    Sydney, Australia.
    Shooter
    Medium Format
    Posts
    597
    Quote Originally Posted by polyglot View Post
    Were the filters fresh? Was the mask properly washed before use?
    No and No.

    I never like wearing the mask owing to the increase in deadspace (=>rebreathing CO2) plus the possibility of inhaling whatever was left in there last time. I can't rule out other common causes for diarrhoea (however conincidental) I just can't think of what it was.

    OK, so if it happens again I can blame all the naysayers !!

  2. #22

    Join Date
    Jul 2010
    Shooter
    35mm
    Posts
    144
    Images
    21
    Did you know what symptoms inhalation could cause BEFORE you started mixing?

  3. #23

    Join Date
    Sep 2006
    Location
    UK
    Shooter
    35mm RF
    Posts
    2,695
    Try Rodinal instead or get another of your family to mix up ID68 outside house.
    Hazchms can be dangerous.

  4. #24

    Join Date
    Jan 2005
    Location
    Live Free or Die
    Shooter
    Multi Format
    Posts
    4,377
    Images
    88
    If the filters were not fresh, and the mask not clean, it's possible that it had undesirable stuff growing. Do you use the mask for other things? How much use does it get? How is it stored?

    As for mixing Xtol, it's never been a problem for me, but that doesn't mean anything for your experience. I occasionally wear a nuisance dust mask when mixing, but usually forget.
    Like Sal, I only heat the water to the minimum specified in the directions.

  5. #25
    Rudeofus's Avatar
    Join Date
    Aug 2009
    Shooter
    Medium Format
    Posts
    1,614
    Images
    10
    I may not be the most experienced dark room worker here, but I sure haven't seen anyone mixing a developer outside the dark room so far, and we don't even have a respirator. The fact that PeterB takes quite strong and uncommon precautions (mixes chems outside or with a respirator) indicates to me that he may be overly sensitive to some compounds. As has been mentioned already, some few people react strongly to chemicals that are used by many others without any issues.

    So let's assume for a second that PeterB indeed developed a high sensitivity to SO2: in this case he should avoid ALL powdered developers, the all contain Sulfite in large doses. Gas masks won't block SO2, so unless he can mix in some outside area or a proper fume hood, liquid developers it is from today on. If you like the properties of Ascorbate developers but really have to avoid Sulfite, there is PC-TEA and PC-Glycol.
    Trying to be the best of whatever I am, even if what I am is no good.

  6. #26

    Join Date
    Jun 2003
    Location
    local
    Shooter
    Multi Format
    Posts
    16,142
    Blog Entries
    1
    Images
    1
    Quote Originally Posted by PeterB View Post
    Not impossible but the timing was uncanny. I had nothing unusual or suspicious to eat that day and none of my other 4 family members had diarrhoea.
    huh

    that is weird ...

    people get sensitive to stuff all the time.
    sorry to hear that a developer you love is giving you the huckleberry 2step.

    if it doesn't bother you mixing it in a better ventilated area you might just mix it there
    but then again, it might affect/bother you when you process your film too ...
    then there seem to be only a few choices ... a full hazmat body suit, don't use the developer ( use something else )
    or start wearing diapers


    i hope for the sake of your film, and sanity, it was something you ate, and not the developer
    it stinks having to change everything you are used to ...

    john
    silver magnets, trickle tanks sold
    artwork often times sold for charity
    PM me for details

  7. #27

    Join Date
    Jun 2007
    Shooter
    35mm
    Posts
    898
    Leaving aside whether a particle-mask is a wise idea because of pre-existing known allergies (which you would already have known about), why would you have a dust cloud? Place the slightly opened packet a few millimetres above the water and shake-and-pour gently -- throwing the powders into the mixing container, in handfuls, from the other side of the room (possible slight exaggeration) is not a sensible way to proceed, even if you were only making a cake. Ingestion of the Xtol sounds as though it is unlikely to have caused your symptoms. In best practice, your protective equipment should be completely clean and sterilised before each use - this could well be a source of some fungal trigger for your illness.

  8. #28

    Join Date
    Jul 2006
    Location
    Oklahoma, USA
    Shooter
    Med. Format RF
    Posts
    680
    Quote Originally Posted by Gerald C Koch View Post
    As a chemist let me say that Xtol is probably the most benign of the commercially available developers. There is no free sulgurous acid in the mixed solution as noted in the MSDS. Your symptom is not associated with any of the chemicals in the developer. While I usually advocate taking safety precautions with darkroom chemicals. you fear of Xtol is unfounded and the respirator ineffectual. This is predicated on the assumption that you have never experienced an asthma like reaction before when exposed to sulfites say from drinking wine. In which case you would have tp give up darkroom work. I fear that you may be making too much out of something which probably has no relation to the Xtol. Like Scrooge you may have been suffering from an "undigested bit of beef."
    Gerald said it best. I mix powders outside with a slight breeze at my back. The cut package is nearly submerged when adding to water. I can't imagine XTOL being the cause.
    RJ

  9. #29

    Join Date
    Nov 2005
    Location
    San Clemente, California
    Shooter
    Multi Format
    Posts
    1,078
    Quote Originally Posted by PeterB View Post
    ...I had the solution heated to about 31degC and could feel the fumes slightly acrid in my eyes as I didn't have sealing goggles on...
    Quote Originally Posted by Sal Santamaura View Post
    I'll let those with more expertise continue to discuss the possibility that there's any connection between XTOL and your symptoms, but wonder why you'd mix it at 31 degrees C? I've had no trouble getting Part A into solution at the low end of its instructions' temperature range, i.e. not much above 18 degrees C.
    Quote Originally Posted by bdial View Post
    ...Like Sal, I only heat the water to the minimum specified in the directions.
    Peter, again, why 31 degrees C?

    It's been a loooong time since freshman chemistry. Chemists: wouldn't whatever might be the cause of Peter's problem be produced in greater quantity if the mixing is done at a higher than necessary temperature?

  10. #30

    Join Date
    Jun 2004
    Location
    South Norfolk, United Kingdom
    Shooter
    Multi Format
    Posts
    2,874
    Images
    62
    One of the attractions of XTOL for myself is how easy it is to mix up, a generous interpretation of room temperature distilled water, and no need to get dressed up in safety gear.

    Tom

Page 3 of 4 FirstFirst 1234 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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