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#1
01-02-2003, 05:18 AM
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Refractometer
Anybody using a refractometer, if so how do you like it. Curious as to the resolution/divisions on the scale.
From what I have been able to find most have 1 ppt or 0.001 Specific Gravity. From this scale can you distinguish if your sample is 1.0250 vs 1.0255 if it only has a division of .001.
__________________
-=Bryan=- 
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#3
01-02-2003, 06:18 AM
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Ordered mine from Saltwater Connections; Milwaukee autotemp for $119. The increments for SG are .001 but since it is analog you can tell when it is in between though not necessarily to a .0005 accuracy.
I'm partial to the refractometer concept over a digital meter since the latter has issues with probe life.
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#4
01-03-2003, 03:54 AM
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I have both the pinpoint and a refractometer (purchased on ebay) used.
I still like the standard sg container for $9.99 and every once in a while check it with the refractometer. As for the pinpoint it needs to be calibrated often and it has been sent back twice to pinpoint. Wendell
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#5
01-03-2003, 05:01 AM
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I have been having problems with my Pinpoint salinity as well. I do have a quality Tropic Marine floating hydrometer which is supposed to be very accurate which I can use to calibrate one of the cheap plastic floating types..
Quote:
__________________
-=Bryan=-
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#6
01-03-2003, 05:38 AM
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I purchased my refractometer from northcoastmarines (shipped via mail). I see they have the new ones with the stronger pins.....
 I only use it to make sure the SeaTest is working mostly, or when I want a really precise measurement. It is important to note that not all hydrometers are temp corrected. (The SeaTest is) http://www.northcoastmarines.com/REFRACT.htm
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#7
01-03-2003, 06:03 AM
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Quote:
 8)
__________________
Brad
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