understood ten separate repeats were run on the procedure of example 1 comparative example 1 and the control in all but one of those separate repeats the use of significant equitransferent amounts of k sup u2295 failed to provide precision u03c3 mv equal to or better than the control whereas the use of cs sup u2295 did give precision equal to or better than the control in the one repeat that did not demonstrate this no statistically significant difference at the 95 confidence level could be found between the control and k sup u2295 on the one hand or the control and cs sup u2295 on the other hand the inconsistency of this one repeat is not understood and because it was only one out of ten it is disregarded the process of examples 1 4 was repeated except that the tests were of preparation 3 on a cl sup u2296 ise with 15 replicates u03c3 mv was found to be 0 12 well within the goal of u2266 0 17 most of the above noted preparations 1 6 were also tested for precision on co 2 ise 39 s and on k sup u2295 ise 39 s in a similar manner the standard deviations were all within the goals of 0 27 mv for k sup u2295 and 0 35 mv for co 2 to demonstrate that the reference liquid of the invention does indeed remove the liquid junction potential due to the equal solution transference of its ions the process of examples 1 4 was repeated except that on the patient sample side first 0 01m nacl in h 2 o and second 0 1m nacl in h 2 o were tested against the.