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Topic: Calibration graph (absorption against iodine) problems  (Read 2699 times)

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Offline bssjonny

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Calibration graph (absorption against iodine) problems
« on: December 11, 2011, 05:03:43 PM »
I've drawn out a graph of iodine concentration against absorbtion and found that it doesnt quite go through the origin as expected. How can this be explained?

Offline sjb

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Re: Calibration graph (absorption against iodine) problems
« Reply #1 on: December 12, 2011, 03:09:32 AM »
I've drawn out a graph of iodine concentration against absorbtion and found that it doesnt quite go through the origin as expected. How can this be explained?

What does it suggest if the line doesn't go through the origin?

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