From the application laboratory - Is one measurement enough?

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00:00:00 From the application laboratory - Is one measurement enough?
00:01:36 From the application laboratory - Is one measurement enough?
00:02:06 Abstract
00:03:12 Outline
00:03:56 Definitions (Google)
00:04:23 Definitions (Google)
00:04:31 The science of measurement - Metrology
00:06:15 Scales, rulers, clocks…
00:07:49 Complex instrumentation
00:08:41 The parameter that is invariably forgotten
00:08:57 Definitions (Wikipedia)
00:10:16 Repeatability: different measurements of the same aliquot of a sample
00:10:38 Very unstable dispersion – wet laser diffraction analysis
00:11:17 Very unstable dispersion – wet laser diffraction analysis
00:12:02 Very unstable dispersion – wet laser diffraction analysis
00:12:09 Very unstable dispersion – wet laser diffraction analysis
00:12:15 Very unstable dispersion – wet laser diffraction analysis
00:12:21 Very unstable dispersion – wet laser diffraction analysis
00:13:18 Agglomerating sample
00:14:34 Case study – dispersion and de-agglomeration
00:15:10 Case study – dispersion and de-agglomeration
00:17:00 Case study – dissolving component in the mixture
00:17:35 Case study – one component is dissolving
00:18:30 Case study – one component is dissolving
00:20:07 Repeatability – ISO requirements
00:21:16 Repeatability – real life sample
00:22:08 Repeatability – real life sample
00:22:48 Repeatability – dynamic light scattering
00:23:40 Repeatability – dynamic light scattering
00:25:09 Repeatability – dynamic light scattering – real life sample
00:25:45 Reproducibility: different measurements of different aliquots of a sample
00:25:57 Inhomogeneous sample – dry laser diffraction analysis
00:27:06 Inhomogeneous sample – dry laser diffraction analysis
00:27:44 Inhomogeneous sample – dry laser diffraction analysis
00:28:48 Very homogenous sample – dry laser diffraction analysis
00:29:34 Sample volumes – how much to obtain a 1% precision at the top end
00:31:10 Untitled
00:32:47 Conclusions
00:38:23 Contact Information
Tempting as it might sound, to take just one measurement of your sample is not enough. Why? Simply because making repeat measurements will help you understand what happens to your sample while is being measured.