記録された日時: April 28 2015

Duration: 56 minutes 50 seconds

In this third webinar in the particle sizing masterclass we look at method development and we concentrate on the techniques of laser diffraction and automated image analysis. The most important thing in method development is always to make sure that the results enable you to follow your production process or understand your product’s performance. With that in mind we look at how to work out how much sample you need to measure, the different options available for dispersing the sample (and how you might choose the best one for your sample) as well as how to set the appropriate measurement conditions. We use a couple of case studies to illustrate these three main factors, and after that you should have a good idea of how to start developing methods for your materials.

Why attend? 

To learn about method development for laser diffraction and automated image analysis. 

To find out about the different ways of dispersing particles and how to choose the best one for your application. 

To get some ideas for how to get started with method development.

Table of contents
1. Welcome
01:28
2. Particle Sizing Masterclass 3: Method Development
00:59
3. Overview
00:53
4. What factors do we need to control?
01:55
5. Sampling
00:19
6. How much sample do you need to measure?
00:35
7. How much sample do you need to measure?
01:25
8. Particle segregation effects
00:00
9. Particle segregation effects
01:03
10. Dispersion
00:07
11. Agglomerates or primary particles?
00:53
12. Wet or dry dispersion?
04:54
13. The wet dispersion process
03:06
14. Adding energy to improve dispersion
01:49
15. Adding energy to improve dispersion
01:34
16. Hydro Sight collects images of liquid sample dispersions in-line with the Mastersizer 3000
01:19
17. Following dispersion trends using Hydro Sight
02:38
18. Are the results repeatable?
01:24
19. The dry dispersion process
03:09
20. The effect of air pressure on particle size
01:57
21. The effect of air pressure on particle shape
01:07
22. Verifying the state of dispersion
01:39
23. Are the results reproducible?
00:47
24. Measurement conditions
00:21
25. Measurement conditions
00:46
26. Sample concentration: Signal to noise ratio
00:00
27. Sample concentration: Multiple scattering
01:38
28. Wet dispersion: Stirrer speed
01:29
29. Determine the correct measurement duration
00:33
30. Affect of measurement duration on variability
00:56
31. Sample concentration: Image analysis
01:07
32. Which magnification should I use?
01:25
33. Thresholds and filters
02:00
34. Review
00:40
35. Questions
09:47
36. Contact Information
01:08
37. Find out more
00:00