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Thread: Conversions, conversions, where's the conversions?

  1. #1
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    Default Conversions, conversions, where's the conversions?

    Help - can somebody post a thread for converting mg/l to ppm and other useful conversions. I remember seeing one in the not to distant past, but can't seem to
    find it again. I thought it was something Randall had posted at one time in Water Works .
    thanks anyone
    Kevin

    ;D

  2. #2
    Registered Member Carol_Roberts's Avatar
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    Default Re:Conversions, conversions, where's the conversions?

    DiscusGeo posted a link to this site recently . .
    http://aqua.ucdavis.edu/tools/treatmentcnf.html

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    Default Re:Conversions, conversions, where's the conversions?

    Thanks Carol, just what I was looking for.
    Kevin

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    Default Re:Conversions, conversions, where's the conversions?

    Conversions & Abbreviations from LaMotte General. Please Carol make this a sticky or something that everyone needs to copy and paste into their Word Processor.
    George

    General:
    Conversions Abbreviations
    ppm = mg/L ppm = parts per million
    1mg/L = 1,000 microgram/L mg/L = milligrams per liter
    1ppm = 1,000ppb ppb = parts per billion
    cc = ml cc = cubic centimeters
    1ml = 1g water g = gram
    1% = 10,000ppm ml = milliliters
    1% = g/100mL ppt or 0/00 = parts per thousand
    1ppt = 1,000ppm ppb = parts per billion
    1% = 10ppt ug/g = microgram/gram
    0.1% = 1g/L 1ug/g = 1ppm
    1000ppb = 1ppm g/L = gram per liter

    Hardness:
    Conversions Abbreviations
    1gpg = 17.1ppm CaCO3 gpg = grains per gallon
    CaCO3 = calcium carbonate

    Alkalinity:
    Conversions Abbreviations
    1dKh = 17.9ppm CaCO3 dKh = German degrees of hardness (also shown as Kh)
    1 meq/L = 50ppm CaCO3 meq/L = milli equivalents per liter

    Weight:
    Conversions Abbreviations
    16oz = 1lb 7000 grains = 1lb
    0.454kg = 1lb kg = kilograms
    454g = 1lb mg = milligrams
    1kg = 1000g g = grams
    1g = 1000mg 28.349g = 1oz

    Conductivity/TDS (total dissolved solids):
    Conductivity Units:
    uS = microSiemens = mhos/cm = micromhos per centimeter
    mS = milliSiemens = mmhos/cm = millimhos per centimeter
    (mhos and Siemens are the same)

    TDS Units:
    ppm = parts per million
    ppt = parts per thousand

    Conductivity/TDS Conversions:
    1mS = 1,000uS
    1ppt = 1,000ppm
    uSiemens x 0.7 = ppm

    Temperature:
    (1.8 x °C) + 32 = °F
    (°F - 32) x 0.56 = °C

    Soil:
    1ppm = 2 lbs/acre = 1.13 Kg/hectare

    Volume:
    15ml = 1/2oz
    250ml = 8oz
    3800ml = 1 gallon
    30ml = 1oz
    500ml = 1pint
    60ml = 2oz
    1000ml = 1quart
    120ml = 4oz
    2000/2500ml = 1/2 gallon
    3.78L = 1gal
    128oz = 1gal
    2pt = 1qt
    4qt = 1gal
    qt = quart
    pt = pint

    Dissolved Oxygen
    Oxygen is critical to the survival of aquatic plants and animals, and a shortage of dissolved oxygen is not only a sign of pollution, it is harmful to the fish. Some aquatic species are more sensitive to oxygen depletion than others, but some general guidelines to consider when analyzing test results are:

    5-6 ppm Sufficient for most species

    <3 ppm Stressful to most aquatic species

    <2 ppm Fatal to most species


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    Default Re:Conversions, conversions, where's the conversions?

    Thanks George - I saved it as a Word doc for future reference.
    Kevin

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    Default Re:Conversions, conversions, where's the conversions?

    Great Keith I am glad it helps.

  7. #7
    Registered Member Carol_Roberts's Avatar
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    Default Re:Conversions, conversions, where's the conversions?

    I stickied it here for now.

    You water boys need to do an index or your whole first page will be stickies pretty soon, lol.

  8. #8
    Registered Member Ardan's Avatar
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    Default Re:Conversions, conversions, where's the conversions?

    Well , there is an index stickied too, but questions keep coming up on the usual stuff too, so I don't know what to unsticky anymore??

    Thanks George!

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    Default Re:Conversions, conversions, where's the conversions?

    Here are some more conversions for you.

    When working with TDS (Total Dissolved Solids) measurements, there is sometimes a need to convert units. Below are a few common measures and conversions to other units.

    1 Grain = 0.0648g (grams) = 64.8mg (milligrams) = 0.00228 oz (ounces)

    Convert grains to grams: multiply grains by 0.0648 gram/grains = grams

    Convert ounces to grams: multiply ounces by 28.35 grams/ounce = grams

    Convert grams to mg (milligrams): multiply grams by 1000 mg/g = mg

    Convert mg to ppm in a liquid: divide mg into liters = ppm

    Convert ppm to ppt: divide ppm by 1000 ppm/ppt = ppt

    Or vice-verse:-

    Convert ppt to ppm: multiply ppt by 1000 ppm/ppt = ppm

    Convert ppm to mg: multiply ppm by liters = mg

    Convert mg to grams: divide by 1000 mg/g = grams

    Convert grams to ounces: divide grams by 28.35 grams/ ounce = ounces

    Convert grams to grains: divide grams by 0.0648 grams/grain = grains

    From the top, an example of converting grains to ppm and ppt:

    5 grains x 0.0648 gram/grains = 0.324 grams

    0.324 grams x 1000 mg/g = 324 mg

    324 mg ÷ 1 liter = 324 ppm

    (if in 2 liters . . . 324 mg ÷ 2 liters = 162 ppm)

    (if in 0.5 liters . . . 324 mg ÷ 0.5 liters = 648 ppm)

    324 ppm ÷ 1000 ppm/ppt = 0.324 ppt

    You may already see the short cut

    0.324 grams in 1 liter = 0.324 ppt (because 1 gram in 1 liter = 1 ppt)

    For ounces, here is how to convert to ppm and ppt:

    5 ounces x 28.35 grams/ounce = 141.75 grams

    141.75 grams x 1000 mg/g = 141,750 mg

    141,750 mg ÷ 1 liters = 141,750 ppm

    (if in 2 liters . . . 141,750 ÷ 2 liters = 70,875 ppm)

    (if in 0.5 liters . . . 141,750 ÷ 0.5 liters = 283,500 ppm)

    141,750 ppm ÷ 1000 ppm/ppt = 141.75 ppt


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    Default Re:Conversions, conversions, where's the conversions?

    Ok, so my KH=5=89.5ppm TDS
    so what about my GH.. does this come in to it?? this is currently 10

  11. #11
    Registered Member RAWesolowski's Avatar
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    Default Re:Conversions, conversions, where's the conversions?

    GH is converted he same as KH or at 17.1 grains per gallon or at 17.9 degrees of hardness. However, GH is general hardne4ss and incorporates all measurable minerals. KH solely measures CaCO3.

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    Default Re:Conversions, conversions, where's the conversions?


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    Default Re: Conversions, conversions, where's the conversions?

    Quote Originally Posted by RAWesolowski
    GH is converted he same as KH or at 17.1 grains per gallon or at 17.9 degrees of hardness. However, GH is general hardne4ss and incorporates all measurable minerals. KH solely measures CaCO3.

    Is there anybody who can explain more about GH and KH?
    Can I measure only TDS or total hardness as ppm and calculate my GH and KH?
    Or I should measure them separately?
    Last edited by aziyaeian; 08-08-2005 at 03:40 PM.

  14. #14
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    Default Re: Conversions, conversions, where's the conversions?

    been looking for this. thank you!!!

    pat.

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    SimplyDiscus Sponsor Stillwater Aquatics's Avatar
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    Default Re: Conversions, conversions, where's the conversions?

    bah all these charts!!! hows about something easy

    http://winecountrydiscus.com/conversions/index.html

    this page is still in the works,some more conversions to be added, but this is where it will reside.

    jon

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