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Old 01-06-2006, 08:22 AM   #1
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Just got my new refractometer, but...

how the hell do I use it??? It comes with the manual but heck I don't quite really follow what it means.

Anyone can shade a light how do these things work? It has got the ATC feature but still according to the manual it ask me to caliberate at 20 degree celcius ambient. I thought this thing will adjust to that by itself???
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Old 01-06-2006, 09:11 AM   #2
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All you do is use the pipit to put a drop of water onto the glass(under the plastic cover), then put the plastic cover down and look through the eyehole toward a bright light source. There is a focus adjustment you can use my turning the eyepiece. Before using it on your tank though, you need to calibrate it. To do that, use a drop of RO/DI water. It should read zero. If it doesn't, then you need to use the nifty little screwdriver they supplied and turn the screw a bit til it does read 0. Once that's set, then you can test your sw and get an accurate reading. HTH
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Old 01-06-2006, 09:17 AM   #3
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I just received mine yesterday, from DIYREEF.com model RHS10-ATC. I agree that even though it says auto temp comp. the directions discuss temps. I calibrated mine with reg. water to 1.000 then sampled my tank water wich is 78 degrees. 1.023 just what I wanted, then off to my LFS to have them test a sample with there more expensive refractometer 1.023. So I do not think it matters, almost like a disclaimer or something, good luck.
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Old 01-06-2006, 10:49 AM   #4
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ATC means that you put the drop of water on and wait 30 sec for the temp of the water to come down to the temp of the refractometer, thats all that is. the only way to test it with RO/DI water, and it should read zero. if it's not ro/di water, than it's not a true referance to go from.
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Old 01-06-2006, 11:03 AM   #5
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I thought distilled water could be used as well? Does distilled water have any salt? I use ro\di myself but I know a lot of people buy distilled water for their nano tanks which is why I ask.
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Old 01-06-2006, 11:08 AM   #6
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distilled is ok. sorry forgot to mention it.
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Old 01-06-2006, 11:14 AM   #7
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http://www.drsfostersmith.com/produc...lpartial&Np=1&pc=1&N=0&Nty=1

Here's the "refractometer" I have, it's very easy to use.
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Old 01-06-2006, 11:46 AM   #8
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the refractometer I use is an old lab model I got when they where getting new ones at the high school. just have to find the conversion chart.
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Old 01-06-2006, 12:15 PM   #9
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What about after use? Do you rinse away the saltwater with tap water? Or just wipe off the saltwater and then store it?
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Old 01-06-2006, 12:20 PM   #10
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wipe it off with a slightly damp cloth or clean papertowel to remove all salt water residue and prevent water spots from building up on it.

if you have really hard tap water, then I'd use RO/disitilled water to clean it afterwards.
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