These micropheres are negatively charged. The charge is usually reported as zeta potential, not a fixed voltage. Typical zeta potentials range from -20 mV to -80 mV, depending on surface chemistry and solution conditions.
95585
Micro particle size standard based on polystyrene monodisperse
analytical standard, size: 0.5 μm
Synonym(s):
Monodisperse polystyrene latex particles (0.5 μm), monodisperse polystyrene microbeads (0.5 μm), monodisperse polystyrene microspheres (0.5 μm), polystyrene monodisperse microparticles (0.5 μm), Size standards
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| Size/SKU | Availability | Price |
|---|---|---|
5 mL | Check Cart for Availability | $246.00 |
10 mL | Check Cart for Availability | $407.00 |
About This Item
grade
analytical standard
Quality Segment
form
aqueous suspension, particles
crosslinking
0 % cross-linked
concentration
2% (solids)
particle size
0.5 μm std dev <0.05 μm
application(s)
glass & ceramic
industrial qc
pharmaceutical
format
neat
storage temp.
2-8°C
General description
Monodisperse polystyrene based micro particles (size: 0.5 μm) are a particle size standard, designed to profile the particle size distribution (PSD) of test samples.
Application
Used to calibrate, qualify and monitor the performance of particle size analyzers, surface scanning instruments and particle counters.
Monodisperse polystyrene latex particles are also used to find the PSD of colloidal dispersions.
Monodisperse polystyrene latex particles are also used to find the PSD of colloidal dispersions.
Features and Benefits
- suitable for routine instrument calibration checks, testing and corrections
- available in 5 mL and 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.
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This Item | |||
|---|---|---|---|
| description analytical standard, size: 0.5 μm | description analytical standard, size: 1.0 μm | description size: 0.2 μm | description analytical standard, size: 0.1 μm |
| particle size 0.5 μm std dev <0.05 μm | particle size 1.0 μm std dev <0.05 μm | particle size 0.2 μm std dev <0.03 μm | particle size 0.1 μm std dev <0.03 μm |
| format neat | format neat | format neat | format neat |
| grade analytical standard | grade analytical standard | grade analytical standard | grade analytical standard |
| application(s) glass & ceramic | application(s) cosmetics | application(s) cosmetics | application(s) cosmetics |
| form particles, aqueous suspension | form particles, aqueous suspension | form aqueous suspension | form aqueous suspension, particles |
| concentration 2% (solids) | concentration 2% (solids) | concentration 2% (solids) | concentration 2% (solids) |
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Storage Class
10 - Combustible liquids
wgk
WGK 3
flash_point_f
410.0 °F
flash_point_c
210 °C
ppe
Eyeshields, Gloves
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Hi,I want to investigate the charging status of polystyrene particles. I know they are negatively charged, but I am not sure about the voltage value. Can you provide it？
1 answer-
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Where can I see how many particles there are per milliliter of the suspension?
1 answer-
The suspension contains approximately 2.6 × 10¹¹ particles per milliliter, which corresponds to 260 billion particles per milliliter.
This value is approximate and may vary slightly depending on handling and measurement conditions.Helpful?
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Are there any surfactants that are used for product 95585?
1 answer-
The calibration product 95585 is provided for calibration purposes as 2% w/v aqueous suspensions with a solids content of 20 mg per ml. For stability reasons, the suspension contains 0.07 wt.-% anionic surfactant (SDS) along with 0.007 wt.-% of a preserving agent (NaN3).
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