Salinity tester

Bought a pinpoint monitor a few weeks ago - love it - easy to use - easy to read - would recommend it.

Dave
 
I have a digital tester just like the one You listed as the second choice (digi-lab tss) and I can only recommend it!!! I've tried using hydrometer and refractometer but the digital tester is the best choice. Easy to use, reliable and the tech-factor is totally awesome!
 
<a href=showthread.php?s=&postid=6535440#post6535440 target=_blank>Originally posted</a> by TekCat
I hate guesswork, that is is the blue line over this or that scale line? The electronic stuff costs twice as much as refractometer however no more hurting eyes. Thanks bertoni!

charm: hm... $43 for refractometer or $1,500 for a gadget?...hm... tough one :)

Hehe, I like my refractometer BECAUSE there's no guesswork. As long as you have a good bright light(I usually point it at my kitchen light since my tank is next to the kitchen) You get a nice distinct line, no guesswork there. Now, if you have a very diffuse light source it will be blurred, but then you're doing it wrong.:)
 
ok, so, as long as there a strong light source then it is ok? I've never used one, that's why I am asking.
 
I agree that a strong light source makes it fairly easy to read, depending on your eyesight, I suppose. I just used my refractometer near a lamp and all went fairly well.
 
Ok, now I am convinced that getting refractometer is a pretty good thing, insead of digital salinity measuring device.

Marinedepot has one, so is Drs.F&S, and others. Which is better, that is: more accurate and easier to use, or they are pretty much the same?
 
Refractometers are easy to read when you point it toward a bright light I look out a window during daylight this makes it real easy to read.
 
Most of them seem to be from the same manufacturer. I'd recommend using the calibration formula from the chemistry forum to check the device, in any case.
 
It's been a whle since i pulled this post up. I place it right near a 100 watt bulb, that should be bright enough right? Maybe its me and I'm getting far sighted( is that right?? I forget) It just seems a bit blury and hard to tell where the blue and the white meet. A buddy of mine had a good idea, he told me to measure with one of the swing arm types and the refractometer. My swing arm is consistently .003 off from the refractometer. I still dont do it and squint to see the refractometer.
 
My refractometer has an eyepiece adjustment on it. you twist the end until everything is in focus. It's like the eyepiece on most cameras that way you don't have to put your glasses on to read it.
Fred
 
Mine too, I got the same one everyone else has RHS-10ATC from Dr Fosters. I just feel you have to really strain to tell the difference from say 1.024 to 1.022 range. 1.020 can easily be found only because of the longer line and 1.025 slightly better because the line is longer also..For an instrument that is able to be precise, i feel that the exact salinity is really more of your approximation to a line. Can you really see the small fine lines where the blue and white meets? This is where I have trouble, like I said before maybe i need glasses. They may have been better off doing the lines for the even and marking out the numbers ending in 5. Or even making the odd a diff length than the even numbers and making 5,0 diff lengths also. JMO
 
I bought a refractometer off E-bay for $35 and it works great. Checked it against a friends pin point and we had the same reading. Can't go wrong for the money.
 
Ok, After reading all of this, I ordered refractometer from PremiumAquatics, ...along with other stuff (cant get just one item) :)
Thanks All!!!!
 
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