The standard deviation is not determined by a specific number of repeat measurements, but rather by evaluating the size distribution curve (measured by means of the Electrical Sensing Zone Method, Coulter Multisizer, 95% confidence interval).
81494
Micro particle size standard based on polystyrene monodisperse
analytical standard, size: 4.0 μm
Synonym(s):
Monodisperse polystyrene latex particles (4 μm), monodisperse polystyrene microbeads (4 μm), monodisperse polystyrene microspheres (4 μm), Size standards
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grade
analytical standard
Quality Level
form
aqueous suspension
particles
crosslinking
0 % cross-linked
concentration
2% (solids)
particle size
4.0 μm std dev <0.1 μm, coeff var <2%
application(s)
glass & ceramic
industrial qc
pharmaceutical
format
neat
storage temp.
2-8°C
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General description
Monodisperse polystyrene based micro particles (size: 4.0 μm) are a size standard, designed to identify the particle size distribution (PSD) of test samples.
Application
Features and Benefits
- suitable for routine instrument calibration checks and corrections
- available in 5 mL & 10 mL pack sizes as neat samples
Analysis Note
For every lot exact values of particle size and standard deviation are determined with an accuracy of 0.001 μm. The size determination of these particles follows procedures described by National Institute of Standards and Technology (NIST, USA) respectively by the Community Bureau of Reference (BCR), esp.:
- Transmission electron microscopy (TEM)
- Scanning electron microscope
- Light microscopy
- Coulter™ counter with MDF-system
Legal Information
Coulter is a trademark of Beckman Coulter, Inc.
Storage Class Code
10 - Combustible liquids
WGK
WGK 3
Flash Point(F)
410.0 °F
Flash Point(C)
210 °C
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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Do the standard deviation/uncertainty numbers come from replicate measurements used to determine an average calibrated particle diameter? Were these derived from a 95% confidence interval from the replicate measurements or a similar method?
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