Electrochemical assay for brain ascorbate with ascorbate oxidase.

cision is not better than 2% of the maximum concentration of each concentration range. This means that an error of 0.02 mg/L S in the 0-1 mg/L S range corresponds to an error of 1 mg/L S in the 0-50 mg/L S range. For optimum precision, the response of the analyzer should be kept large by selecting the syringe size according to the sulfur content of the analyte and maintaining a reasonably rapid syringe drive speed.