Efficient Sample Management with Zetasizer Sample Assistant

The new Sample Assistant attachment, included with every Zetasizer Advance system, significantly enhances system utilization. It liberates operators from the need to manually change samples.

What's the result? Increased efficiency while still maintaining the exceptional data quality and flexibility that users expect from the Zetasizer Advance.

Features and Benefits

  • Enhances system efficiency by reducing the amount of time lost between samples.
  • More effective sample management without sacrificing the accuracy of the data.
  • The Sample Assistant complements existing methods to streamline method transfer. If users need a different approach, they can easily create one using the Method Builder.
  • Use multiple methods, even on the same sample tray.
  • The straightforward workflow guides users through maintenance with ease.


  • Tray bays: You can hold any tray in a configuration that works for you. Up to six different positions can be held.
  • Tool holder: Stores datum tools and cell adapters securely; ready for when the Assistant requires them.
  • Space for your Zetasizer: Holds your Zetasizer in the correct position for the co‑bot, allowing walk-up use as and when it is needed.
  • Sample trays: Three types of trays are available, all of which support Standard and Universal sizing cells and Zeta cells.
  • Co-bot: Works safely around people. Changes samples autonomously with smooth and precise movements.
  • Bespoke grippers: Nimble and precise: allows the Assistant to hold your samples securely.
  • Baseboard: Everything has its place on the baseboard: the instrument, co-bot, and storage.

Tray Bay Options

  • Standard Tray: Up to 24 cuvettes can fit on the standard tray when samples are provided in 10×10 mm disposable cuvettes like the DTS0012 cuvettes.
  • Zeta Cell Tray: Up to 12 Zeta capillary cells, such as DTS1070, can be placed in the proper orientation on the zeta cell tray.
  • Universal Cell Tray: The universal cell tray maintains the standard geometry of ANSI/SLAS 96-well plates and can hold up to 96 universal disposable sizing cells. This design enhances compatibility with multi-pipettes and fluid handling systems.

Providing Operator Flexibility

A key advantage of the Zetasizer is its holistic system design. Every component, from the instrument to the sample cells, is crafted to deliver optimal data quality. But what was missing from this setup?

Until recently, users had to be present to operate the equipment and acquire such high-quality data. Thanks to the Sample Assistant, users can now get the same high-quality data without having to attend to the instrument, allowing them to complete other work while the Assistant processes the samples.

The Sample Assistant effectively resolves two critical challenges: it guarantees high-quality sample data that inspires confidence, and it removes the need for constant attendance. Moreover, it is straightforward to upgrade, requiring no modifications to the instrument and no downtime for cleaning between samples, and it eliminates the risk of cross-contamination.

Improve Utilization

  • It minimizes the downtime between samples, as it is always ready for use.
  • It extends the working week or day by allowing users to leave their Zetasizer operating unattended with the Sample Assistant.
  • It reduces the time spent on cleaning flow cells between samples.

Operates Safely

  • The system is designed to adapt to the user's environment by detecting obstacles and safely stopping to avoid accidents.
  • Enables quick recovery from system failures, ensuring that data remains secure and the last known state is preserved.


General Specification. Source: Malvern Panalytical Ltd

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Weight Without Zetasizer: 45 kg
With Zetasizer: 65 kg
Dimensions (L x W x H) 600 x 900 x 734 mm
Power 110 – 240 V AC, 50/60 Hz
Via Ethernet
(USB – Ethernet converter supplied)


Configuration and Accessories. Source: Malvern Panalytical Ltd

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Zetasizer Sample Assistant includes: baseboard, stands, 2 x tray holders, 1 x standard tray, 1 x Zeta cell tray, tool holder with datum tool, tray datum tool and all fixings
Universal Sizing
Cell kit
1 x tray holder, 1 x Universal Cell Tray, 2 x Universal Cells, Cell Sealing Jig, 1 x pack cell sealing film (25 sheets)
Zeta cell tray Cell tray to hold DTS1070 cells
Standard Cell tray Cell tray to hold standard 10x10 mm cuvettes
Universal Cell Tray 96-position cell tray
Tray holder Additional tray holder with fixings

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