Interlaboratory Study Articles & Analysis
8 articles found
Abstract Endocrine-active substances can adversely impact the aquatic ecosystems. A special emphasis is laid, among others, on the effects of estrogens and estrogen mimicking compounds. Effect-based screening methods like in vitro bioassays are suitable tools to detect and quantify endocrine activities of known and unknown mixtures. This study describes the validation of the Arxula-Yeast Estrogen ...
For instance in the AOAC scientific journal article entitled “Enumeration of Probiotic Bacilli Spores in Animal Feed: Interlaboratory Study” attempts were made to study the variation in plating enumeration between 14 different laboratories. In this study, using high speed blenders for a specified amount of time was ...
ASTM is committed to validating its test methods and assists technical committees in doing so through its Interlaboratory Study Program. What value does this validation have to EPA? ...
A series of interlaboratory comparison exercises were conducted to assess the accuracy of dialkyl phthalate ester (DPE) concentration measurements in environmental and biological samples. Five laboratories participated in analyses to determine DPE concentrations in standard test solutions; marine sediments; three certified reference materials (CRMs), including CARP‐2 (fish muscle) and BCR‐07 ...
Abstract A European interlaboratory collaborative study was conducted to validate a method for the quantitative determination of lipophilic marine biotoxins based on high-performance liquid chromatography–tandem mass spectrometry. ...
In order to verify the quality of such tests, the National Institute of Chemistry organised an interlaboratory comparison. Seven interlaboratory trials named 'PT-Waste Water' were organised in the last four years. Toxicity with the Daphnia magna- mobility inhibition test (ISO 6341) was included in three rounds and about 20 laboratories, mostly from Slovenia, took ...
The Institute for Standards Research interlaboratory study of rock properties has provided precision statements for two additional ASTM rock-property test methods, D 5407 (Young´s modulus and Poisson´s ratio) and D 2664 (ultimate strength), both in confined compression. Three types of intact rock, Barre Granite, Berea Sandstone, and Tennessee Marble, were used in ...
An interlaboratory study has been conducted using four ASTM rock-property test methods (longitudinal and transverse pulse velocity, indirect tensile strength, unconfined compressive strength, and uniaxial elastic modulus) on four types of intact rock (Barre Granite, Berea Sandstone, Salem Limestone, and Tennessee Marble). ...