Einige Versuchsergebnisse

Publication Sponsored by the Society's Fastness Tests Co–ordinating Committee – XLIV

“…Because of the spread of the results, there is no statistical evidence of any upward (or other) trend of r with decreasing fastness within the five dyeings of fastness below 4, but the 8'BP' r are in the lower half of this group, whereas the R results for 8'BP' are well towards the highest values. Evidence from the bulk trials [2] also supports the view that the repeatability, r gradient may not continue unchanged below GS 3 (with the biggest potential rating spread) but might be flat to GS 2 and then descend again to GS 1.…”

“…One is the precision of grey-scale assessment, which is unlike that of, say, reading a level in a burette. The practical background paper [2] contains the statement that the new test method [ I ] was 'at least as precise as use of the Grey Scales': the derivation of the evidence for this is not discussed in the BSI recommendations [3] and will be described in a separate short account [S] .…”

“…Recently a new colour-fastness test was proposed [I] and practical background information was provided [2] . The test contains two entirely novel sections for any SDC/BSI colourfastness method, aimed principally at technologists and managers responsible for decisions on testing programmes and production quality control.…”

Publication Sponsored by the Society's Fastness Tests Co–ordinating Committee –XLVI

“…A recently published test method [ I ] and the associated practical background paper [2] both state that the test method was 'at least as precise as use of the Grey Scales'. Derivation of the precision of the test method as a whole has been described already [31.…”

“…There are two components to the overall precision: The evidence available for statistical analysis consisted of Grey-Scale (GS) assessments from an interlaboratory trial [ 2 ] . Nine wool dyeings were tested in ten laboratories.…”