Measurment of nanoparticles

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jackiemorris01's picture
Measurment of nanoparticles

Good afternoon, below is a post that I put in the Microscopy Forum section but no-one has replied and I wondered if anyone in this group can help me. The equipement I have used is a Malvern Nanosizer for my particles. Thanks, Jackie

Good afternoon,
please could someone explain why - or point me in the direction of the information - why an angle of 173 degrees is used to measure backscatter in a DLS monitor. I have found information that explains that (some) equipement uses 90 degrees and suggests that this is historical.
thank you, Jackie