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Author Topic: Glucose solution and refractometer  (Read 65 times)

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AliD

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Glucose solution and refractometer
« on: Yesterday at 10:43:12 PM »

Hi,

I hope this is the right place to put this.  I made up a 63 % glucose solution by dissolving 630 g (dry weight) dextrose powder in a final volume of 1L.  My supervisor wanted me to confirm the solution strength by measuring it on a glucose refractometer.  When I did so the refractometer gave me a reading of 43 %.  I also checked on a YSI glucose analyser which gave me a reading of 70 %.  Can anyone explain why I'm seeing such differences?
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Mitch

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Re: Glucose solution and refractometer
« Reply #1 on: Today at 07:35:14 AM »

Have you calibrated the instrument against commercial standards?
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