Brookhaven Instruments Ltd

Address :

Chapel House Stock Wood Redditch
B96 6ST - Worcestershire
United Kingdom
Tél. : 01527 834400

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ZetaPALS – The Zeta Potential Analyser with a Thousand Times More Sensitivity Developed by Brookhaven and based on the work of Professor Brian Vincent at the University of Bristol, the ZetaPALS enables routine measurement of electrophoretic mobilities up to a thousand times smaller than has so far been possible with conventional electrophoretic light scattering methods. In practice this means that for the first time, without the use of extremely high voltages, electrophoretic mobilities and zeta potentials can be determined quickly and easily even in traditionally

y difficult conditions. For instance, particles in low polarity (organic) media, in high viscosity or high salt concentrations or simply where the zeta potential is at its lowest e.g. close to the isoelectric point. But that’s not all. The ZetaPALS is equally at home with the more normal colloidal conditions – low salt, high polarity media – making it ideal for all applications. It comes complete with all the facilities of the ZetaPlus with which it shares all its other specifications – including the easy to use, electroosmosis-free cell design. As with the ZetaPlus, all the capability of the Brookhaven 90Plus dynamic light scattering system for particle size distribution analysis can be added at any time, now or in the future. With a high specification computer built in, the ZetaPALS requires minimal bench space. Its range of sample cells includes low cost disposable plastic cells for use with appropriate samples as well as glass and quartz cells which can be used together with the solvent resistant electrode assembly for more aggressive liquids. For particle sizing where sample availability is limited, special low volume cells are available. Calculation of zeta potentials from electrophoretic mobilities requires a knowledge of the dielectric constant of the suspending medium. For the most frequently used liquids, values are already incorporated into the ZetaPALS software. The Brookhaven BI-870 Dielectric Constant Meter provides a rapid and simple means to determine dielectric constants of other liquids and liquid mixtures which may not be readily available from the literature. NEW! BI-ZTU Autotitrator for pH and additive titrations with ZetaPALS and ZetaPlus ZetaPALS Specifications: Sample Type: Most colloidal particles or droplets suspended in any transparent liquid. Particle Size Range: Material dependent. For electrophoresis, typically 0.005 to 30µm; for particle sizing, 0.002 to 3µm overall. Volume: 1 mL to 1.5 mL, optional 0.2 mL for particle sizing only. pH Range: 1 to 13. Conductivity Range: 0 to 20 S/m. Mobility Range: 10-11 to 10-7 m2/V.s Temperature Range: 50C to 750C +/- 0.20C. Measurement Duration: 10 to 250 s, typically 30 s. Laser: 30 mW: 50 mW option available. Field Strength: 0 to 60 KV/m, either automatic or by manual selection. Electrodes: Palladium with acrylic supports; for aggressive samples, special solvent resistant (Kevlar) electrode assemblies are available. Cells: Disposable plastic, or glass or quartz. Computer: Built-in PC. WindowsTM Software included. Please enquire for latest specifications. External computer optional. Printer: Colour inkjet, standard. Others available. Monitor: >Colour, SVGA graphics card. Input Power: 100/115/220/240 VAC; 50/60 Hz; 300 Watts. Dimensions: 267(H) x 635(W) x 445(D) mm. (excluding monitor) Weight: 37 Kg (excluding monitor)
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