NanoBrook ZetaPlus

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High Purity Northwest Inc.

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NanoBrook ZetaPlus

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Features at a glance

Zeta potential in low salt aqueous solutions/suspensions
Accurate, rapid, easy to make zeta potential determinations
One piece, easy-fill disposable sample cells
No cell alignment or calibration
Zeta potential at 15°
Temperature control, -5 °C to 110 °C
Customizable reports, two parameter plots, graphical overlays
Can resolve multi-modals
Built in automatic procedures and parameters SOP

Reliable, Accurate, and Accurate Analysis
The NanoBrook ZetaPlus is the simplest and most accurate particle electrophoresis system available. This revolutionary instrument has been designed to eliminate the short coming inherent in other zeta potential instruments. The ZetaPlus software is simple and intuitive to operate but yet offers flexibility and a full range of means for those that whish to tune their experiments to specific circumstances.

The screen image shown below indicates the clear and concise presentation. Information obtained from the sample is updated in real time and the user can select from several display formats. A table of physical constants for many common suspending fluids is provided but the user may provide their own values if desired. Printed reports are fully customizable.

Comprehensive Information
The NanoBrook ZetaPlus measures complete electrophoretic mobility distributions in seconds including multimodals (an example of bimodal zeta potential sample can be seen on the result screen from analyzing a mixture of charged particles.)

In the example below the result of analyzing a mixture of alpha and gamma Aluminas in 1 mMolar KCI at pH10 is displayed. The left peak is identified with the green cursor and shown to have a zeta potential of -75 mV. If the other peak is chosen the value given is -5.00 mV. The ability of the NanoBrook ZetaPlus to provide this information distinguishes it from other methods which provide only an ensemble average.

Derive Extended Information
The user can tabulate or graph any appropriate pair of parameters allowing, for example, the determination of the iso-electric point (IEP) as in the example below. The NanoBrook ZetaPlus is provided with a pH probe.

Unique Cell Design
The unique cell configuration eliminates the electroosmotic effect: No stationary levels, no alignment, and no calibration are required; as evidenced by the excellent agreement with NIST1980, a standard reference material. The NanoBrook ZetaPlus uses low cost, disposable sample cells. There is no assembly or maintenance required: Cross contamination is eliminated. Glass and quartz cells are available optionally. The same basic cell design is used with the NanoBrook 90Plus Zeta, ZetaPALS, 90Plus PALS, and Omni

Sample Type	Most nanoparticle, polymer and colloidal-sized materials, suspended in any non-absorbing liquid, with relative permittivity (dielectric constant) > 20 and viscosity < 5 cP
Size Range	1 nm to 100 µm diameter, sample dependent
Mobility range	10-9 to 10-7 m2 / V * s
Zeta potential range	-220 mV to 220 mV, sample dependent
Sample cells	180 µL, 600 µL, 1250 µL
Maximum sample concentration	40% v/v, sample dependent
Maximum sample conductivity	7.5 mS/cm
Signal processing	Electrophoretic Light Scattering, ELS
Precision	± 3%, depending on salt concentration
Temperature control range	-5 °C to 110 °C ± 0.2 °C
Condensation control	Purge facility using dry air, nitrogen preferred
Standard laser	35 mW red diode laser, nominal 640 nm wavelength
Scattering angle	15°
Data Presentation	Doppler Frequency Shift, electrophoretic mobility, zeta potential suing Smoluchowski Hückel, or Henry
Power Requirements	100/115/220/240 VAC, 50/60 Hz, 150 Watts
Diemensions	23.3 x 42.7 x 48.1 cm (HWD)
Weight	15 kg
Environmental Characteristics	Temperature 10 °C to 75 °C Humidity 0% to 95%, non-condensing
CE certification	Class I laser product, EN 60825-1:2001, CDRH