All three cells are compatible with all versions of the Zetasizer Nano series that measure zeta potential. The folded capillary cell (DTS1070) is a disposable cell for the measurement primarily of the zeta potential of samples in aqueous dispersants. It has a flow configuration so can be used for both batch measurements, and for stop-flow measurements using an MPT-2 autotitrator.
The dip cell (ZEN1002) uses a pair of electrodes that dip into a sample in a cuvette, that can either be disposable plastic (DTS0012) or a glass cell (PCS1115). It has a batch configuration that cannot be used with an MPT-2 autotitrator. The dip cell electrodes are designed to be cleaned and reused. It is recommended that separate cells are used for aqueous and non-aqueous applications.
The high concentration cell (ZEN1010) is designed for the zeta potential measurement of samples in aqueous dispersants at moderate to high concentrations. It has a flow configuration so can be used for both batch measurements, and for stop-flow measurements using an MPT-2 autotitrator. The cell is designed to be dismantled and cleaned.
Folded capillary cell | Dip cell | High concentration cell | |
|---|---|---|---|
Sample compatibility | Aqueous samples | Aqueous and non-aqueous samples | Aqueous samples and dispersants with dielectric const >20 |
Applications | Where it is important to eliminate any chance of sample cross contamination | Where there is time to clean the electrodes to reduce the cost of use | Where it is undesirable to dilute the sample or to minimize the dilution required |
Autotitrator compatibility | Yes | No | Yes |
Number of sample measurements per cell | 100's at low conductivity =<10mM, Less at higher conductivities | No limit | No limit |
Cell materials | Polycarbonate, gold plated Beryllium Copper | PEEK, Palladium, cuvette - polystyrene, glass or quartz | PEEK, Palladium, Quartz, silicone tubing. Viton seals |
Sample concentration (Sample dependent) | Low | Low | Low up to 40%w/v |
Zeta Potential Measurements | Yes | Yes | Yes |
Size Measurements | In ZS model only, not in Z or ZS90 models. | In ZS model only, not in Z or ZS90 models. | In ZS model only, not in Z or ZS90 models. |
Results | Zeta potential mean and distribution | Zeta potential mean and distribution | Zeta potential mean only |
Maximum field strength | 25V/cm | 750V/cm | 75V/cm |
