Laser Diffraction Masterclass 3: Developing dry powder dispersion methods

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00:00:00 Masterclass 3: Developing dry powder dispersion methods
00:01:12 Masterclass 3: Developing dry powder dispersion methods
00:01:39 The laser diffraction masterclass
00:02:28 Overview
00:03:43 Method development for laser diffraction
00:04:26 Laser diffraction measurement process
00:05:42 Sources of error in particle size measurements
00:07:54 Dry Dispersion
00:08:21 Introduction to dry dispersion
00:09:26 Bulk powder dispersion: force of adhesion
00:10:01 Dry powder dispersion mechanisms
00:12:21 Dry powder dispersion: Disperser design
00:14:04 Dry method development process
00:15:51 Step 1: Setting up the feed rate
00:17:54 Controlling the feed rate
00:19:37 Step 2: Measure a pressure titration
00:21:23 Step 3: Compare dry results to wet
00:22:06 Step 3: Compare dry results to wet
00:22:51 Step 4: Optional – change venturi type
00:23:54 Comparing standard and high energy venturis
00:25:21 Sampling, reproducibility and robustness
00:25:48 Definitions of repeatability, reproducibility etc.
00:27:33 What precision values are reasonable?
00:29:01 Particle segregation effects
00:29:01 Particle segregation effects
00:29:05 Errors associated with sampling techniques
00:30:00 How much sample do you need to measure?
00:30:59 Reproducibility: Sampling
00:31:36 Robustness: Measurement duration
00:32:22 Conclusions
00:33:03 Thank you for your attentionAny questions?
00:49:54 Contact Information
  • This webinar presented by Dr. Anne Virden, covers method development for samples measured in dry dispersion.
  • Dry dispersion offers the advantage of measuring larger sample masses much more quickly as well as different disperser options for fragile or robust samples.
  • Discover the processes you can use to assess the state of dispersion and reproducibility of dry measurements to enable you to set up a robust method.