보유장비

Zeta Sizer | 제타전위 나노입도분석기

Zeta Sizer
보유장비 관련 정보
연구실/분야
모델명 Nano ZS
제조사 Malvern
담당자 한선필
연락처 052-217-4174 / okno1234@unist.ac.kr
예약 가능여부 가능
예약단위 0.5hr 1일최대예약시간 4hr
예약Open(~일 전) 5일전 예약취소불가(~일 전) 2시간전
  • 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.

  • 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

  • Applications

    • Size measurement

    • Zeta-potentail measurement