Two recent papers by Payne et a1.'S2 propose that an isotonic salt bridge of either 150
mmol/L KCl or NaCl may lead to improvements in performance over the hypertonic salt …

There is controversy about whether protein interferes with ion measurements using ion-
selective electrodes. We have investigated the effects of changes in the salt-bridge …

Biomedical, Newton, MA) ion-selective electrode type of analyzer relative to that obtained
with flame photometry. They were concerned because their results were in disagreement …

Five commercial analysers were used to measure ionized calcium in aqueous and protein
solutions which contained the same amount of calcium but had sodium chloride …

The real value of the budget available for clinical chemistry in this country is unlikely to
increase for some years. Any expansion and development must therefore be balanced by …

3. Payne RB. Clinically significant effect of protein concentration on ion-selective electrode
measurements of ionised calcium. Ann Clin Biochem 19, 233-237 (1982). 4. Payne RB, Little …

The ionised calcium concentration of sequential retentates prepared by ultrafiltration of a
human control serum increased with increasing protein concentration when measured with …

Others, using an Orion SS-20 ionised calcium analyser, noted that the ionised calcium
concentration of a native serum sample was 8% greater than that of its ultrafiltrate. The …

Plasma chloride is of value in the assessment of acid/base and electrolyte abnormalities. It is
a component in calculation of both the anion gap and strong ion differences. The analytical …

When the reference electrode liquid junction of a Nova 2 analyser was changed to isotonic
potassium chloride, increasing the ionic strength of aqueous solutions containing a constant …