Zeta Sizer | 제타전위 나노입도분석기
| Laboratory/Field | |||
|---|---|---|---|
| Model | Nano ZS | ||
| Maker | Malvern | ||
| Technician | Yeong Bi Kang | ||
| Contact | 052-217-4168 / ybkang@unist.ac.kr | ||
| Status for Reservation | 가능 | ||
| Reservation Unit | 0.5hr | Maximum Time (per day) | 4hr |
| Open(~ago) | 5일전 | Cancel (~ago) | 2시간전 |
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Description
Particles, emulsions and molecules in suspension undergo Brownian motion. If the particles or molecules are illuminated with a laser, the intensity of the scattered light fluctuates at a rate that is dependent upon the size of the particles as smaller particles are kicked further by the solvent molecules and move more rapidly. Analysis of these intensity fluctuations yields the velocity of the Brownian motion and hence the particle size using the Stokes-Einstein relationship. Dynamic light scattering is a non-invasive and well-establish technique for measuring the size of molecules and particles typically in the submicron region.
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Specifications
• Laser:
- HE-Ne, 4 mW, 633 nm
- Automatic Attenuation 100% to 0.00003%
• Detection angle
- 175 degree
• Temp. range:
- +2 ~ 90 C
• Sample concentration Min. Concentration (MAX Concentration)
< 10 nm -> 0.5 mg/L
10 nm ~ 100 nm -> 0.1 mg/L (5% mass, density 1 g/cm^3)
100 nm ~ 1 um -> 0.01 mg/L (1% mass, density 1 g/cm^3)
> 1 um -> 0.1 mg/L (1% mass, density 1 g/cm^3)
• Particle measurement (DLS)
- Particle size: 0.3 nm ~ 10 um
- volume range of 12 ㎕ ~ 1.0 mL
- sample concentration > 40 % by weight
- min. concentration 0.1 mg/mL
• Zeta potential measurement (ELS)
- Particle size: 3.8 nm ~ 100 um
- Principle : laser doppler velocimetry
- Range : - 150 mV ~ + 150 mV
• Molecular weight measurement (SLS)
- Range: 342 ~ 2*10^7 Da
- Volume: 0.75 mL
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Applications
• Size measurement
• Zeta-potentail measurement