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Old 05-23-2010, 02:39 PM   #1
gicts
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Default Refractometer question

I am talking to a guy on craigslist about a refractometer, and I am not sure if it will serve my functions.
He says it is an old model from a science lab that isn't handheld. He describes the reading capablilites as

"measures....sugar concentration and total solids in preserves; identify organic compounds and more over 1.30 to 1.90 N-range or 0 to 85% sucrose range "

This would be my first refractometer and I'm not 100% sure what I am looking at, however I have done a little research and have a few questions:

1. Wtf is a N-range?

I can't find anything on any refractometer listing about it. Is that a way to measure the organic compounds he is talking about? I asked him to clarify, and he said that is what the part of the manual he has left says. I was thinking maybe he meant specific gravity and mistyped 1.03-1.9 but he didn't.

2. Would this fit my needs seeing as it saying it reads ranges of 0-85% sucrose and can take liquids. He stated he thought the original use had something to do with jam or jelly

I can't imagine this not working, but I figured I should run it by some people who know what they are talking about first!


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Old 05-23-2010, 04:26 PM   #2
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How far is he from you? If he has the manual, I say take a look at it before paying him. I'd also make a sugar solution, measure it with a hydrometer before heading over to him and test the sample.


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Old 05-23-2010, 06:11 PM   #3
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I honestly would say to just look on ebay for a handheld one. That is where I picked up two of them.
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Old 05-23-2010, 06:29 PM   #4
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Quote:
Originally Posted by gicts View Post
1. Wtf is a N-range?
N is the refractive index - the measure of how light is bent while passing through the sample.
Distilled water has N of 1.333 at 20C (68F).
The N of a 20 Brix (1.080) sugar solution is 1.363.
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Old 05-23-2010, 06:43 PM   #5
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I'd be careful or at least know exactly what lab this is coming from. We use these machines when we do large scale sucrose purification of viruses and I would never dream of bringing that into my house.
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Old 05-23-2010, 08:27 PM   #6
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Interesting points. Thanks guys. I'll try to get a little more info!


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