Repeat analyses with the coulometric
reference method revealed significantly lower chloride concentrations [mean (SD) difference, 3 (3.7) mmol/L] in most cases.
Reversed-phase HPLC separation of plasma norepinephrine, epinephrine and dopamine with three-electrode coulometric
Both pre- and postcolumn cells (E1 and E2) were coulometric
electrodes (ESA Model 5020).
For example, a new method utilizing HPLC with coulometric
electrochemical (EC) detection for the simultaneous measurement of plasma methionine, homocysteine, cysteine, cystathionine, cysteinylglycine, and glutathione could aid in differential diagnoses and in the design of intervention strategies (15).
Type of Titration Performed % Respondents Potentiometric 50% Karl Fishcer 43% Automatic 39% Coulometric
28% Spectrophometric 20% Non-Aqueous 18% Conductometric 15% Amperometric 12% Isothermal 6% Parallel 2% Virus 2% Thermometric 1% Note: Table made from bar graph.
Detection was electrochemical (redox mode), using a coulometric
detector with a dual analytical cell (ESA Analytical).
The large electrode, coupled with coulometric
measurements, allows detection of a large fraction of the glucose collected into the hydrogel pad every cycle.
The OX-TRAN 2/40 utilizes Mocon's industry-standard coulometric
sensor, so no calibration is required, and it complies with ASTM F1307 for OTR measurements.