Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 69,970   Posts: 1,523,517   Online: 845
      
Page 1 of 3 123 LastLast
Results 1 to 10 of 24
  1. #1
    tbm
    tbm is offline
    tbm's Avatar
    Join Date
    Jun 2004
    Location
    Southern California
    Shooter
    35mm
    Posts
    365

    Need measuring scale for powder chemicals

    I need a metric-based scale that I can use to measure powder chemicals I will be using to make several film developers from recipes in Steven Anchell's book. Can anybody solve my problem, which is not being able to find a provider of that device in the U.S. on the Web? Thanks immensely for your help!

    Terry

  2. #2
    glbeas's Avatar
    Join Date
    Sep 2002
    Location
    Roswell, Ga. USA
    Shooter
    Multi Format
    Posts
    3,307
    Images
    109
    I got mine on Ebay, a used Ohaus balance. Others have gotten small digital scales, some made for powder reloading. You need to be a little more broad in your search parameters, theres a ton of stuff out there.
    Gary Beasley

  3. #3

    Join Date
    May 2004
    Shooter
    4x5 Format
    Posts
    61
    Hi,
    The scale I have is a RCBS 5-0-5 that is sold for weighing gun powder.
    It is calibrated in "grains". 15.432 grains = 1 gram. You can weight very tiny
    amounts more accurately than a gram scale. It's limitation is 33 grams. Just have to weight heavy stuff two or three times. They also sell a weight set to check the scale if you are in doubt that it's set correctly. Nice thing is it's mechanical, simple, no electronics to go out of wack.

    Jennifer

  4. #4
    juan's Avatar
    Join Date
    May 2003
    Location
    St. Simons Island, Georgia
    Shooter
    Multi Format
    Posts
    1,637
    Images
    4
    I use a digital (oops) postal scale I bought at Office Depot. It only measures whole grams, so I sometimes have to make larger amounts of stock solutions to round up the numbers. For instance, the recipe for Pyrocat-HD calls for .2g phenidone, but the recipe makes only 100ml of stock solution. I make 1-liter of stock solution, which requires 2g of phenidone - easily measured on my scale.

    It's not the best solution, but it's rather inexpensive and will work if you think ahead and are careful.
    juan

  5. #5
    VoidoidRamone's Avatar
    Join Date
    Aug 2004
    Location
    New York City
    Shooter
    Multi Format
    Posts
    490
    They sell scales from photographers formulary... here http://www.photoformulary.com/Deskto...ID=48&langID=0 -Grant

  6. #6
    KenM's Avatar
    Join Date
    Apr 2003
    Location
    Calgary, Alberta
    Shooter
    4x5 Format
    Posts
    800
    I'm with Jennifer - in fact, I think I have the same scale. Works fine. But, as she says, if you're measuring large (ish) quantities, you have to do it in multiple batches.
    Cheers!

    -klm.

  7. #7

    Join Date
    Mar 2003
    Location
    Greenville, SC
    Shooter
    Large Format
    Posts
    4,813
    Images
    5
    Quote Originally Posted by tbm
    I need a metric-based scale that I can use to measure powder chemicals I will be using to make several film developers from recipes in Steven Anchell's book. Can anybody solve my problem, which is not being able to find a provider of that device in the U.S. on the Web? Thanks immensely for your help!

    Terry
    Try this site. http://www.balances.com/ They typically have some of the best prices anywhere.

    A good scale for what you want to do is one that has a maximum capacity of around 500 g, with a reading accuracy of 0.1 g.

  8. #8
    David A. Goldfarb's Avatar
    Join Date
    Sep 2002
    Location
    Honolulu, Hawai'i
    Shooter
    Large Format
    Posts
    17,165
    Images
    20
    I highly recommend www.balances.com. I found a decent compact scale at a good price, and it was shipped quickly (and I also use it for weighing letters and counting pennies using the "parts counter" function).

  9. #9
    galyons's Avatar
    Join Date
    May 2003
    Location
    San Francisco Bay Area
    Posts
    273
    Images
    2
    I use a My-Weigh digital. (200g X .1g). Very rarely have I had to split weigh more chems than 200 g. It has survived about 4 years of somewhat frequent use. Seems to be accurate and easy to calibrate. (It came with a 100g Calibration weight.) Easily changes weight mode, grams, ozs, ??? I think that there is a 3rd, but I'm too lazy to walk downstairs and check! It is about the size of a Palm Pilot.

    Available from the previously mentioned vendors.

    Inexpensive, well built and same batteries for 4 years! It has my continuing vote!
    Cheers,
    Geary

  10. #10
    David A. Goldfarb's Avatar
    Join Date
    Sep 2002
    Location
    Honolulu, Hawai'i
    Shooter
    Large Format
    Posts
    17,165
    Images
    20
    My scale has a capacity of 250 g. Occasionally I need to do more, so I just measure in two parts when necessary (PMK solution B, for instance, is 300g Sodium Metaborate/l, but I don't need to mix it that frequently, since the stock is diluted 1+2+100).

    If you plan to make your own fixer or if you need to weigh out plain hypo, definitely go for the larger size (500 or 1000g). For most developers, 250 g seems to take care of most needs.

Page 1 of 3 123 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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