Do you have a refractometer?

Discussion in 'Water Parameters and Additives' started by viper357, 8 Jul 2009.

Voter count: 124
?

Do you have a refractometer?

Poll closed 5 Dec 2009.
  1. Yes

    75 vote(s)
    60.5%
  2. No

    28 vote(s)
    22.6%
  3. No, but I use a professional hydrometer

    21 vote(s)
    16.9%
  1. viper357

    viper357 Admin MASA Contributor

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    Please vote on the poll, thanks.:)
     
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  3. Reef Maniac

    Reef Maniac MASA Contributor

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    Yes... AND a "professional" hydrometer. Use the refractometer for "everyday" readings, but check it often with the glass float hydrometer, especially before believing an "off" reading on the refractometer.

    Hennie
     
  4. Junz

    Junz

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    YES YES YES! i just got a refractometer yesterday for my B'day!
     
  5. Neil H

    Neil H Moderator MASA Contributor

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    how about an option for want a refractometer ???????
     
  6. martin

    martin Reef Adict

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    Got 2 and double check salinity.
     
  7. Nemos Janitor

    Nemos Janitor

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    Ok :) i got me a Refractometer (ATC) i also got a Tropic marin pro Hydrometer and a Hanna HI9828 as well as the aquatronica density probe.

    The refractometer(S) are used multiple times every day and are calibrated every fortnight. They are more than accurate enough for our/my application. The Hanna and Aquatronica are calibrated monthly.

    Now what does a refractoneter and pro Hydrometer actually read, :) and what is the difference?
    1) Conductivity
    2) Salinity
    3) Specific Gravity
    4) Density

    I should add that a refractometer and a hydrometer read different parameters. Or do they?
     
  8. Tony

    Tony

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    Mine doesn't have ATC so I have to float a vial of RO water in the tank to bring it to temp before calibrating and taking a reading. Major PITA
     
  9. dallasg

    dallasg Moderator MASA Contributor

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    i have a red sea swing arm one and a floating one
     
  10. FransSny

    FransSny

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    I have refract, swingarm jobby and hydrometer
     
  11. Sentari

    Sentari

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    Whats the meaning of a proffesional hydrometer? also is a refractometer REALLY worth it...

    Also what is better a swing arm or floating one?
     
  12. FransSny

    FransSny

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    Sentari I think what is meant is not the small R 20 models but the LARGE ones similar to those used in the wine making industry
     
  13. viper357

    viper357 Thread Starter Admin MASA Contributor

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    Yip, Frans is right, here is a pic of what I mean, on the left is the standard floating hydrometer you get, I think they cost about R20 or so, the one on the right is a much bigger and much more accurate hydrometer, my one has a resolution of 0.0001, these are much more accurate than a refractometer, they give you a much more precise reading.

    [​IMG]
     
  14. riyadhessa

    riyadhessa

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    viper thank you for sharing this with us...now i to understand especially with the pic
     
  15. viper357

    viper357 Thread Starter Admin MASA Contributor

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    Interesting question, I have just read the info on the box of my "High Precision Hydrometer" and it states that it measures the salt content as "Specific Gravity", whereas if you wish to measure the "Density" then you need the "High Precision Areometer". I would imagine delving into this any further would be rather mind boggling.:p
     
  16. Andreas

    Andreas

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    I dont have one but was hoping that you would sponsor me one seeing that the poll closes just before christmas:yeahdude:
     
  17. Jaco Schoeman

    Jaco Schoeman MASA Contributor

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    DAMN!!! So size DOES count?!?!?!?!?! :lol::lol::lol:...:nono:

    I had one of those small ones. That gave me a reading of 1.016-1.019 - so I kept doing top up with salt water. Reading stayed the same. Took water to exotic to test with a refractometer and the reading came to 1.031 - oops...

    Never ever use the small one, I personally think it must be taken off the shelf :razz:
     
  18. Sentari

    Sentari

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    Is anyone selling the professional hydrometers?
     
  19. Mtroboer

    Mtroboer

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    Yip and will never use an ordinary hydrometer again! I also ran my tank at 1.31 for 2 years before I took some water to the LFS for testing- I nearly fell on my back! I would like to get my hands on one of those professional hydrometers though...
     
  20. Manic

    Manic Moderator

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    I got mine from Idol Marine: Think it cost around R550 but is more accurate than a refractometer and doesn't ever need calibration.
     
  21. Sentari

    Sentari

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    Woah thats alot. Gonna have to invest in one. Will speak to the guys there next time i go there.
     
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