Principle
Magnesium ions react with xylidyl blue in an alkaline medium to form purple coloured complex. The intensity of the purple color is directly proportional to the concentration of magnesium in the specimen.
Procedure
Reaction type ……………… End-Point
Reaction time …………. 10 mins. at 37°C/20 mins. at R.T. (25-30°C)
Wavelength ………………….. 510 nm. (500 – 530 nm.)
Zero setting with ………………… Reagent Blank
Blank absorbance limit ………… < 0.300 Abs.
Sample volume …………………………… 0.01 ml (10 jul)
Reagent volume …………………… 1.0 ml
Standard concentration ……………. 200 mg%
Linearity ………………… 800 mg/dl
Quality Control
To ensure adequate quality control, it is recommended that each batch should include normal and an abnormal commercial reference control serum. It should be realized that the use of quality control material checks both instrument and reagent functions together. Factors which might affect the performance of this test include proper instrument function, temperature control, cleanliness of glassware and accuracy of pipetting.
Mrunal Thakur –
We are using the accurex products since 15 years. Its to give accurate result.