HC 110

Discussion in 'Talk About Techniques' started by mono, Sep 3, 2016.

  1. mono

    mono Member

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    Hi folks,

    how do you dilute HC 110 direct from sirup?
    I love this developer but have kind of problems to measure the portions even with a syringe ...
    Any better ideas?
    Thank you!
     
  2. Ian-Barber

    Ian-Barber Administrator Staff Member

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    I use both a syringe and child's medicine measuring cup

    I fill the cup to 10ml and then syringe out 3 ml for my FomaPan
     
  3. martin henson

    martin henson Administrator Staff Member

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    Has to be a syringe IMHO
     
  4. Alan9940

    Alan9940 Active Member

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    I've always used a small Paterson graduate. I pour in whatever syrup needed to make the volume of working solution required. The "trick" to getting all the syrup out of the graduate is to save off a small bit of the total volume of water, then partially fill the graduate and shake. I usually do this a couple of times to ensure I've removed all the syrup. Has worked like a charm for nearly 40 years.
     
  5. Keith Haithwaite

    Keith Haithwaite Active Member

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    Syringe for me too.
     
  6. martin henson

    martin henson Administrator Staff Member

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    After the syringe I also half fill the graduate and shake it to get all the measured amount out
     
  7. Ian-Barber

    Ian-Barber Administrator Staff Member

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    But dont you just syringe directly into your working Graduate ?
     
  8. martin henson

    martin henson Administrator Staff Member

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    I don't trust the measuring in the syringe, so I get it out with one then and use a grad to make sure its right.
    The syrup is thick and when you pour it out of the grad it sticks to the sides, it all has to go in to get the amounts correct
     
  9. Bill Martindale

    Bill Martindale Member

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    I do the same as Alan, use the Paterson small graduate to measure the syrup, pour into the bigger one with a small quantity of water already in then rinse out the small one into the big one before making up to the final volume.
     
  10. mono

    mono Member

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    Thank you so much for all your input, so I´ll fight on with a syringe and a graduated cylinder ...
     
    Last edited: Sep 4, 2016
  11. Keith Haithwaite

    Keith Haithwaite Active Member

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    I previously calibrated a small collection of 10 and 20ml syringes with the syrup so now I simply draw in a slight excess of syrup, invert the syringe and eject the air bubble then eject the excess syrup back into the bottle until the syringe plunger reaches the pre-calibrated mark then eject the remaining syrup from syringe into the waiting correct quantity of water. Minimal waste. Simple, quick, accurate and repeatable. But whatever works for you is the best method.:)
     
  12. Dustin McAmera

    Dustin McAmera New Member

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    I use a graduated pipette; not much different from a syringe, but it's long so it reaches into the bottle quite well. Being glass, and long, I've broken a few of them. I originally stole a little stock of pipettes in a range of sizes, from a skip at the university where I used to work. Not sure where to replace them.

    A lot of concentrate tries to stay in the pipette when you blow it out; I fill and empty it with dilution water a few times, then use the pipette as my stirrer to dissolve the concentrate. By then it's washed pretty clean.

    It matters what kind of pipette-filler you use; if there's a large volume of air above the liquid in the pipette, any 'pull' on the filler lowers the pressure of that, and the result is the liquid keeps rising some time after you want it to stop. I use a bulb filler, with a valve at the bottom that isolates the pipette from the volume of air in the bulb.
     
  13. Keith Haithwaite

    Keith Haithwaite Active Member

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    3ml in a 1lt solution Ian (assuming you're using the Mod54 system), what dilution rate is this? Am I missing something?
     
  14. Ian-Barber

    Ian-Barber Administrator Staff Member

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    I use 13ml in total but syringe out 3ml and then pour our 10ml
     
  15. Keith Haithwaite

    Keith Haithwaite Active Member

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    Sorry Ian, I misunderstood your post. :rolleyes:
     
  16. Ian-Barber

    Ian-Barber Administrator Staff Member

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    I am using some cheap syringes though and after several washes, I have noticed the numbers are starting to rub off :(
     
  17. Keith Haithwaite

    Keith Haithwaite Active Member

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    I haven't had this problem yet Ian but here's a tip I have used many times: Borrow a nail file and with the edge carefully file a small groove over the marked graduate lines and then fill them in with one of those pens used for writing on CD's etc and you'll find they last a lot longer. When the lines start to rub off simply go over the grooves again. For the numbers just write them on again with the said pen when they start to fade. Not very pretty perhaps but it works. ;)

    Clean nail varnish over the markings works also but be careful it doesn't remove the number when you apply it.
     
    Last edited: Sep 4, 2016
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  18. alexmuir

    alexmuir Member

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    I use a 150ml Paterson graduate. I decant the syrup into plastic bottles that originally held 250ml of contact lens solution. You can prise the top off to do this. The bottle must be be clean and DRY before filling, as water causes HC110 to oxidise. The fine tip of the bottle allows you to squeeze the syrup out in a very controlled way. I tend to use a variation of Dilution E, by making it 1+49, rather than the proper 1+47. This makes metric dilutions far easier as the graduate has 10ml divisions. I put the syrup in the graduate, half fill with water, then stir to dilute all the syrup into the water. I then use the rinsing out method mentioned by others. If you stir the first dilution well enough, the remaining water easily cleans out the graduate. I use the times for Dilution E, but have adjusted, as I would normally, until I get the desired negative quality. 10ml makes 500ml for 35mm or 120 in a tank and 20ml does 1litre for a MOD54. It is wise to stir the fully diluted developer again before putting it in the tank, just to make sure it is completely mixed. I've tried syringes and pipettes, but was never convinced that all the syrup came out.
    Alex.
     
  19. Ian-Barber

    Ian-Barber Administrator Staff Member

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    For your workflow @alexmuir how much have you adjusted your time by and for what film
     
  20. alexmuir

    alexmuir Member

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    I use 7.00mins for HP5+ rated at 200ASA. I use 7.00 mins for Delta100 rated at 80ASA. Temp is 20c and agitation by inversion, continuous for 1.00 min then 10secs/min. I use the MOD54. This works for me, but can't guarantee it for everyone. I print on a diffuser enlarger with a colour head. I don't generally scan negs as I don't have a proper scanner.
    Alex.


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