About Instrument and its Applications:
For measurements of low mobility, the unique, Brookhaven Instruments ZetaPALS is the answer. There is nothing else like it.
With concepts developed at Bristol University and Brookhaven Instruments, the ZetaPALS determines zeta potential using Phase Analysis Light Scattering (PALS): a technique that is up to 1,000 times more sensitive than traditional electrophoretic light scattering. Electrostatic repulsion of colloidal particles is often the key to understanding the stability of any dispersion.
A simple, easy measurement of the electrostatic mobility - even in nonpolar liquids-yields valuable information. Measurements in water and other polar liquids is easy and fast with the Brookhaven Instruments ZetaPlus.
Such measurements cover the range of typically 9 - 100 mV, corresponding to a range of nobilities of 0.5 - 8 x 10-8 m2 /V · s. Measurements in low dielectric liquids, or in high viscosity oils, or in high salt concentrations, or even very near the I.E.P. involve mobilities 10, 100, and even 1,000 times smaller.
Traditional approaches simply fail under these circumstances or suffer from poor repeatability. With the ZetaPALS such measurements are made in typically 30 - 50 seconds, and the repeatability is typically 1 - 2%.
An optional feature of the ZetaPALS is the measurement of particle size by dynamic light scattering. Based on the well-established technique used in the Brookhaven Instruments 90Plus, particle size and distribution information are obtained in minutes.
General Information-
Make - Brookhaven Instruments
Model –ZetaPals
Year of Installation - 2014
Specifications-
Particle Size Size Range: 0.3 nm to 3 microns
Sample Volume: 3 mL
Concentration Range: 0.1 mg/mL to 10% v/v
Zeta Potential Size Range: 1 nm to 100 µm
Mobility Range: 10-11 to 10-7 m2 /V · s
Zeta Potential Range: -220 mV to 220 mV
Maximum Sample Concentration: 10% v/v
Sample Volume: 2000 µL
Maximum Sample Conductivity: 30 S/m
Sample Requirements-
Minimum 3 ml volume shall be required.