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Thread: Handling Muriatic Acid

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    Join Date
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    Handling Muriatic Acid

    I usually use Dry Acid (which can be expensive) to lower the Ph in my pool because Muriatic Acid (which is easier to find) gives me the Hebe-Gebes. My biggest concern is how to measure the acid and then store the partial bottle.

    What type of measuring containers can be used with Muriatic acid. I'm assuming that glass will work, but are there any plastics that can be used?

    How long can you store Muriatic and what are the dangers of off gassing once you have broken the seal under the lid (and, yes, the lid is screwed on tight).

    Thanks

    Frank

    21' AGP
    Pentair Sand Filter
    Frank Jurgens
    21' AG, 11000 Gal Vinyl Liner
    Sand Filter

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    TripleB4me's Avatar
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    Re: Handling Muriatic Acid

    I use a plastic measuring cup I got at WalMart years ago, it works fine. Fumes aren't an issue if the lid is on tight. Fumes are a big issue when you upcap and pour. Only do this in an outside area and be aware of wind direction, you don't want it blowing in your face. I keep my acid in a shead but I would keep it in the garage if an outside shead isn't available.
    20x40 IG Vinyl, 1.5 HP Whisperflo, Sta-Rite System 3 (300) Sq. ft Cart
    Intellichlor IC40 SWCG, 125,000 BTU Pentair heatpump, Polaris 280
    7' IG FG Spa, 2 HP Whisperflo, Pentair Dynamic III Cart (100) Sq. ft

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    Re: Handling Muriatic Acid

    Ok, Thanks. I was not sure if the Muriatic would disolve plastic (which would have been embarassing and dangerous).

    I keep my pool supplies in an outside shed that is very well venitlated so I guess the fumes wont be a problem.

    Thanks for the advice.

    Frank
    Frank Jurgens
    21' AG, 11000 Gal Vinyl Liner
    Sand Filter

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    ivyleager's Avatar
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    Sep 2007
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    Re: Handling Muriatic Acid

    I had the heebie jeebies about muriatic acid too. Been using it this season (have had pool for 6 years). It's great! So much cheaper. One gallon cost me $6 and lasts a month. Lots of rain this year which has been messing with my pH.

    I too use a 2cup plastic measuring cup. (I initially used an old metal cup...bad idea, but what the heck did I know!) I handle it armed for bear. I use my old, scratched shooting glasses to protect my eyes, Playtex gloves to protect the hands and arms, AND I make sure I have my rubber boots on. Yeah, yeah....overkill I'm sure. But I'm a safety girl!

    Hope this helps!
    CaryB
    36 x 18 IG vinyl, 25K, 1 HP pump, sand filter
    1 skimmer, 2 returns, no main drain
    Old school: PoolSolutions test kit

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    JesseJames's Avatar
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    Re: Handling Muriatic Acid

    I wear gloves and also have the eye protectors, but often forget to use them.
    13K Gal., Plaster, SWG, Intellichlor IC 20, Sta-Rite 1 HP Pump, Sta-Rite PLM 300 Filter, Pentair LED, Solar, Screened Enclosure, Great White, TF-100

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    JasonLion's Avatar
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    Re: Handling Muriatic Acid

    Eye protection is a lot more important that gloves. Acid on your hand can itch, or if you have a cut it will burn, but doesn't normally cause any serious damage. Acid in your eyes can blind you permanently.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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  7. Back To Top    #7

    Re: Handling Muriatic Acid

    I used it this year as well- believe me, the containers will have spill proof, child proof caps. That stuff is NASTY though! I used a plastic measuring cup and it worked just fine. I agree with the comments about eye protection- very important. Have fun!
    Lori
    Hayward S180T Sand Filter
    15 X 30 Above Ground Pool (10,600 Gallons)

  8. Back To Top    #8

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    Re: Handling Muriatic Acid

    I've gotten MA on my hands before. It just felt kinda warm. The real danger when handling MA is, as Jason said, getting it in your eye(s). Real damage would be done in that case. It will also damage certain surfaces so be careful with it on the deck.

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    guamguy's Avatar
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    Re: Handling Muriatic Acid

    You definitely need to be careful with this stuff on deck surfaces, not to mention the obvious heath risks. I spilled a little bit on the grout line on my tile deck while pouring it into a measuring cup. I didn't notice it until a few minutes later. It burned up quite a bit of the grout that I had to fix later.
    12,800 gallon IG plaster kidney-shaped pool, waterslide, 800 gallon spa.
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