| 摘要 |
A heavy metal-free composition and its method of use in an ion selective electrode-based assay are disclosed. The heavy metal-free composition includes a borate compound and an alkalinity adjusting compound, and is used to dilute a test sample; buffer the test sample; and substantially reduce the affects of interferents present in the test sample on the ion selective electrode-based assay. The heavy metal-free composition and its method of use are especially useful in an ion selective electrode-based assay for carbonate ion concentration in a test sample, like blood serum, blood plasma, urine or cerebrospinal fluid. |
