ZetaSizer Ultra - Malvern (ZETASIZER)


Guarantor:
M.Eng. Lizeth Katherine Tinoco Navarro

Instrument status:
Operational Operational

Equipment placement:
CEITEC Nano - B1.15


The ZetaSizer Ultra from the Malvern company provides the ability to measure the size and zeta potential of particles, molecules or micelles in a liquid medium. The unique features of the ZetaSizer for measurements over a wide concentration range and precise temperature control give reproducible, repeatable and accurate results. This device utilizes Multi-Angle Dynamic Light Scattering (MADLS®) technology for the highest resolution of sizing data.

The ZetaSizer works in the sample temperature range of 0–120 °C. The minimum sample volume is 3 μL for the particle size and 20 μL for the zeta potential measurement. The minimum sample concentration for particle size measurement depends on the technique used, starting from 0.1 mg/mL for Dynamic light scattering (Non-Invasive Back-Scatter) to 1 mg/mL for MALDS, the same concentration as for zeta potential. The size range is 0.3–10 μm for size determination and 3.8 nm–100 um for zeta potential measurement.


Publications:

Photogallery

Specification

A) Particle size and molecular size

Measurement principle

Non-Invasive Back Scatter (NIBS) Dynamic Light Scattering
Dynamic Light Scattering (90° and 13°)
Multi-Angle Dynamic Light Scattering (MADLS)

Measurement angle173°, 13°, 90°
Measurement rangeDiameter: 0.3 nm – 15 μm  (2) (9)
Minimum sample volume3 μL
Concentration range

Minimum sample concentration:  

Blue Label: 0.2 mg/mL 15 kDa Protein

Red Label: 0.1 mg/mL 15 kDa Protein

MADLS: 

0.1 mg/ml 15 kDa Protein

MADLS Particle Concentration Enabled?

Blue Label: No

Red Label: Yes

Maximum sample concentration (3):

40% w/v 


B) Zeta potential

Measurement principle

Mixed-Mode Measurement phase analysis light scattering (M3-PALS)

Size range3.8 nm – 100 μm
Minimum sample volume20 μL (4)
Concentration range

Red Label: 1 mg/mL (5) to 40% w/v (6)

Blue Label: 10 mg/mL (5) to 40% w/v (6)
Sample conductivity range

Maximum: 260 mS/cm 


C) Static Light Scattering (molecular weight)

Molecular weight range

300 Da – 20 mDa

Measurement principleStatic Light Scattering with Debye Plot
Accuracy+/- 10% typical


D) Particle concentration

Measurement principle

Blue Label: N/A

Red Label: MADLS - Particle Concentration (Mie)

Concentration range

Blue Label: N/A

Red Label: 1x108 to 1x1012 particles/mL
Calibration type

Blue Label: N/A

Red Label: Single point system calibration only


E) System

Detector

Avalanche Photodiode

Laser safety

He-Ne (633 nm)
Blue label: 4 mW Max

Red label: 10 mW Max
Temperature control range0°C to 120°C (7)
Ambient conditions

+10°C to +35°C, 35 - 80% RH (non-condensing)


F) Notes

Notes

(1) Water as dispersant
(2) Indicative data available for particle sizes greater than 10 μm when using Extended Size Range analysis and low volume disposable sizing cell accessory. 
(3) Sample dependent
(4) Using patented diffusion barrier technique
(5) Measured using 15 kDa protein
(6) Measured using bile acid
(7) Dry nitrogen cell purge required for temperatures below dewpoint 
(8) Accuracy 0.1°C at 25°C, 0.2°C at 0°C, 0.5°C at 90°C
(9) Recommended upper size range for MADLS is 500nm diameter

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