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Brookhaven - Model BI-ZTU -Autotitrator
The BI-ZTU Autotitrator option for the NanoBrook zeta potential analyzers is ideal for automatic determination of the isoelectric point (IEP) of colloidal materials. Four pumps provide unparalleled flexibility for optimizing reagent use. The dramatic savings of reduced labor costs allow for larger scale studies that produce more valuable results.
In addition, the BI-ZTU can be used to evaluate the effect of salt concentration on zeta potential. Also, the surfactant costs can be minimized. Use the BI-ZTU to find the minimum concentration at which the zeta potential does not significantly change.
Easy Operation
The BI-ZTU Autotitrator is simple to set up and to use:
- Attach the power supply to the rear of the BI-ZTU
- Connect the BI-ZTU to the zeta instrument using the standard USB cable
- Fill the four 100 mL standard reagent bottles
- Insert the tubes
- Replace the plug-in electrode assembly with the flow cell
- Ready to go!
When the BI-ZTU option is added to a NanoBrook zeta potential instrument, the titrator command appears in the main menu bar. The software automatically guides the user through an autotitration experiment. User friendly dialog boxes guide even the inexperienced operator through each step.
Example of pH titration measurement resultsData was collected and analyzed automatically, saving labor and time.
In the SLS mode, time-averaged intensity measurements are made - at either fixed or variable angles - in the range from 8° to 155° and analyzed with software provided for the methods of: Zimm, Berry, Debye, Guinier, Kratky etc. Such evaluations using measured angular or concentration dependencies of the intensity of the scattered light provide key information for those interested in the such topics as:
Mw Molecular weight determinations
- Rg Radius of gyration
- A2 Determination of second virial coefficient
- Micro-emulsion technology
- Colloid behavior
- Complex fluid characterization
- Emulsion polymerization
- Particle size growth
- Determine isoelectric point with acid/base or reagent titration
- Optimize surfactant concentration
- Measure effect of salt concentration (ionic strength) on zeta potential
- Range: pH 2 to pH 12.
- Cell: Flow cell included. Fits into instrument square cell holder. For use with NanoBrook: 90Plus Zeta, 90Plus PALS, ZetaPlus, ZetaPALS, and the Omni.
- Tubing: 1.00 mm (0.040″) I.D. Teflon tubing.
- External Fittings: Luer Lock
- Includes: pH probe and 4, 100 mL, screw-cap bottles.
- Size: small footprint, HWD 310 x 180 x 290 mm wide
- Power: 110/115/220/240 VAC, 60/60 Hz, 25 Watts
- Certifications: CE Marked