Nanoparticle Size and Zeta Potential (DLS) Analytical Service

Overview

The Nanoparticle Size and Zeta Potential Analyzer (DLS) measures particle size and zeta potential to evaluate size distribution and stability across various systems. It is widely applied in semiconductors, pharmaceuticals, food, ceramics, pigments, polymers, and chemical industries. The key application of this technique includes:

• Semiconductors: Investigating impurity purification and interactions on crystal surfaces.
• Pharmaceuticals & Food: Studying emulsion stability, protein functionality, and surfactant behavior.
• Ceramics & Pigments: Controlling dispersion, aggregation, and surface reorganization.
• Polymers & Chemicals: Managing emulsion stability and optimizing polymer and pulp processes.

Using Dynamic Light Scattering (DLS), the instrument determines particle size and distribution by analyzing Brownian motion. For zeta potential, it measures electrophoretic mobility under an electric field, applying the Henry equation to calculate the zeta potential. The standard dispersants are water and ethanol. The nanoparticle size analyzer is suitable for a range of approximately 1 nm to 3 μm, while the Zeta potential measurement is suitable for a range of 5 nm to 10 μm. Temperature variation measurements can also be performed

Testing Procedure (Only for Reference)

1. Close the lid and power on the instrument. Wait for the indicator light to turn red and start flashing.
2. Launch the Zetasizer software and wait for the indicator light to turn green.
3. Preheat the instrument for 30 minutes.
4. Prepare the sample.
5. Inject the prepared sample into the sample cell.
6. Select an SOP or set manual testing parameters.
7. Insert the sample cell into the instrument, click "Test," and wait for temperature equilibrium.
8. Perform the measurement and save the results after the test is complete.

Sample requirements

Powder Requirements: Provide 20 mg of powder.

Liquid Sample Requirements:

• Provide 5–10 mL per sample.
• The main dispersants are deionized water and ethanol, but other dispersants can be specified (note: results may vary). Avoid using cyclohexane as it corrodes the cuvette.
• The refractive index of the sample must be provided.

Other Special Requirements: After ultrasonic treatment in the specified dispersant, the sample should exhibit a faint color visible to the naked eye, be uniformly dispersed, and free of precipitation or aggregation.

Instrument Models: Malvern Zetasizer Nano ZS90 etc.

Note: The listed price is for reference only. Please request a quote for the final pricing.

Analytical Service Minimum order requirement: $250 per order. A $200 handling fee will be applied if order is below $250.

Please contact sales@msesupplies.com for additional information and instructions on our Analytical Services program. Confirmation of the sample(s) requirements, SDS sheets and additional information is needed prior to processing the Analytical Service order. 

***Please do not ship any samples without authorization from MSE Supplies***