This study aimed to assess the interlaboratory reproducibility at four university hospital laboratories in the southeast region of France of the Etest technique for the determination of caspofungin (CAS) and amphotericin B (AMB) MICs and to compare it to the CLSI broth microdilution reference method. Consecutive clinical yeast isolates (n = 198) were included in the study. AMB and CAS MICs were...

This paper presents an interlaboratory comparison of radiated emission measurements in the frequency range 30-1000 MHz. A tubular dipole was specifically designed and employed as a reference emitting source. The most important for is stability testing process. not performance sample, but signal sample stable. In addition, two ways determining value electromagnetic field strength are considered....

Abstract Infrared Radiofluorescence (IR-RF) is a relatively new method for dosimetric dating of the depositional timing sediments. This contribution presents an interlaboratory comparison IR-RF measurements sedimentary feldspar from eight laboratories. A variability instrumental background, bleaching, saturation, and initial rise behaviour signal was carried out. Two endmember samples, naturall...

Success in programs of interlaboratory comparisons is based on two basic pillars. In addition to the inseparable share laboratory and quality activities performed, organized program comparison also affects final success. Organizing tests a time consuming process. It includes several important stages that precede laboratory's participation itself. One most selection an object suitable for purpos...

Since 1980, ASTM has required that test methods include statements on the precision and bias of each method. E384 and B578, each committee responsible for these documents, E04 and B08, initiated new interlaboratory comparison studies, commonly referred to as round-robins. These studies involve circulating standard materials to each of several chosen laboratories for measurements. Considerable a...

Stochastic modeling and analysis of international key comparisons (interlaboratory comparisons) pose several fundamental questions for statistical methodology. A key comparison (KC) is specifically designed to derive the key comparison reference value and to assess conformance of calibrations by participating national metrology laboratories at a few, “key”, settings for a particular measurement...

This paper has two primary purposes. First, it provides an elementary description and tutorial overview of the refracted-ray method of measuring fiber index profiles. Second, it presents new results concerning the theoretical foundation, the linearity and precision, and other aspects of the method. In particular, we find that index differences may be measured to 5% or better and conclude by sho...