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in the Flame test for sodium ions Procedure is : dip a cleaned flame test wire...

in the Flame test for sodium ions Procedure is : dip a cleaned flame test wire and clean in HCL into each urine specimen, then place the wire loop in a flame. then record the color of the flame... Question: How can you tell if the urine is normal or abnormal by the color of the flame of the sodium ion?

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In flame test, yellow colouration is produced by the presence of sodium ion in urine samples.
There is no proper standard to specify abnormal or normal urine sample by measuring the Sodium level in urine. However, very low and very high content of sodium is treated as abnormal urine sample.
Though flame test is a qualitative analysis technique, we can't quantitatively describe the amount of Sodium in urine sample by seeing the flame.
However, the most intense yellow flame is observed for the highest concentrated urine sample and low intensity is seen for the lowest concentration of sodium in urine sample.

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