China Bio&Media Magnesium Test Kit Ivd Reagent

The Magnesium (Mg) assay kit is intended for the accurate and direct quantitative measurement of Mg in human plasma.
Test principle
In an alkaline environment, free Mg reacts with Calmagite, forming purplish-red complex which shows absorption at the wavelength of 530 nm. The intensity of the color is proportional to the concentration of Mg.
EGTA and TEA are used to eliminate interferences caused by calcium (Ca) and heavy metal, respectively. Protein molecules are stabilized by surfactants, and thus the measurement of Mg can be free from the interference of proteins.
Product Features

1. Linear range of Mg level: [0.04, 2.00] mmol/L

Linear correlation coefficient ∣r∣≥0.990
Linear deviation ≤ ± 10.00%

2. Absorbance of blank ≤ 1.50

3. Sensitivity

The change in absorbance (ΔA) ≥ 0.10 while testing the specific Mg sample of concentration of 1.05 mmol/L.

4. Accuracy

Relative deviation is within ±10%.

5. Precision

Intra CV% ≤ 5.0%; inter CV% ≤ 5.0%.

Technical Parameters

Temperature37ºCOptical path length (OPL)1.0 cmMain wavelength530 nmSecondary wavelength700 nm (Optional) MethodEnd-point method
(single reagent)Reaction directionPositiveSample5 μLReagent300 μLReaction time300 s

Reference range of Ca level: 0.54 - 1.04 mmol/L.
Packing Specifications
R1: 2x50 ml, R2: 2x5 ml
R1: 4x50 ml, R2: 4x5 ml
Storage and stability
Unopened: Store assay kits at 2 - 8ºC protected from light. Stable to expiration date printed on individual vials (for 16 months).
Opened: Store assay kits at 2 - 8ºC protected from light. Stable for 1 month if kept capped from original container and free from contamination.
Do not freeze the assay kit.