The H2SD: Inter-laboratory test results
This study involves three High Speed Stickiness Detectors (H2SD) located in three different laboratories. The goal is first, to determine between-measurement variability for each of these devices and second to compare the mean count in each device with the others. Fifteen cottons covering a wide range of 1 to 60 sticky spots were mixed twice using a laboratory opener, and were then dispatched to the laboratories. Each laboratory made 10 measurements with its H2SD on the 15 cottons following a randomized block design. The entire measurement procedure was replicated twice. The square of the number of sticky spots was analyzed using a mixed linear model, with fixed laboratory and long-term time effects, and random short-term time effects. The residual variability within the laboratories was approximately the same for all three. Some short term or longer-term drift was observed, depending on the laboratory. Significant differences were observed between the laboratories, though the correlation between the results was very high (R2=0.96, 0.97 or 0.99). The usefulness of a calibration is discussed.
| Main Authors: | , , , , |
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| Format: | conference_item biblioteca |
| Language: | eng |
| Published: |
NCCA
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| Subjects: | Q60 - Traitement des produits agricoles non alimentaires, coton, fibre végétale, fibre textile, propriété physicochimique, mesure (activité), instrument de mesure, http://aims.fao.org/aos/agrovoc/c_1926, http://aims.fao.org/aos/agrovoc/c_5966, http://aims.fao.org/aos/agrovoc/c_7695, http://aims.fao.org/aos/agrovoc/c_1521, http://aims.fao.org/aos/agrovoc/c_4668, http://aims.fao.org/aos/agrovoc/c_12457, |
| Online Access: | http://agritrop.cirad.fr/527196/ http://agritrop.cirad.fr/527196/1/ID527196.pdf |
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