Is this a good refractometer?

[Joshsmit56001]

http://cgi.ebay.com/Salinity-Refractometer-pH-Meter-Tester-Aquarium-ATC_W0QQitemZ230207378587QQihZ013QQcategoryZ20755QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

I am currently using a hydrometer and need something better.

Thanks,
Josh

[jeweldamsel]

I have a similar one and mine works pretty good.

[reefergeorge]

Looks just like mine I got off ebay. Make sure to get some calibrating fluid with it, and don't use ro like in the directions say.

[Roy G. Biv]

This on is difficult to read because you are measuring 1.020 - 1.028. It is a very small area on this scale. You may need to break out the specticles on this one.
http://gainexpress.com/EbayWeb/NewProducts_Rosell/RHS-10ATC/reticle.jpg

[reefergeorge]

<a href=showthread.php?s=&postid=11481365#post11481365 target=_blank>Originally posted</a> by Pmolan
This on is difficult to read because you are measuring 1.020 - 1.028. It is a very small area on this scale. You may need to break out the specticles on this one.
http://gainexpress.com/EbayWeb/NewProducts_Rosell/RHS-10ATC/reticle.jpg
Looks a little high you should bring it down to 1.025.:D

[Joshsmit56001]

Better than a hydrometer though

[garygb]

I suggest you get some Pinpoint Salinity Calibration Fluid to set it. It seems that when using purified water, as lots do, to calibrate, the refractometer is off by a few thousandths (1.022 when I thought my water was 1.025). I bought the fluid through MarineDepot myself. The fluid is at 35ppt. The exact name of the fluid is: Pinpoint Salinity Monitor 53.0mS Calibration Fluid. I learned about it in the Chemistry Forum here on RC. There is a thread somewhere on it.

[Slice of Ocean]

I bought mine off ebay and it works great.
http://cgi.ebay.com/NEW-Heavy-Duty-ATC-Salinity-Refractometer-4-Aquariums_W0QQitemZ320201787478QQihZ011QQcategoryZ20755QQtcZphotoQQcmdZViewItem

[Joshsmit56001]

I will probably use RO water for no until I can buy some of the calibration liquid. Thanks for all the input guys.