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Electrokinetic Analyzer for Routine Solid Surface Analysis: SurPASS™ 3 Eco

Your gateway to solid surface charge analysis

SurPASS™ 3 Eco is the entry-level instrument for routine surface analysis featuring fully automated zeta potential measurements of macroscopic solids at real-life conditions. SurPASS™ 3 Eco employs the classical streaming potential and streaming current method for a direct analysis of the surface zeta potential. The zeta potential is related to the surface charge at the solid/liquid interface and is a key parameter for understanding surface characteristics and developing new specialized materials.

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Key Features

Electrokinetic analysis at the push of a button

Electrokinetic analysis at the push of a button

  • Direct analysis of the zeta potential at the solid/liquid interface, derived from streaming potential and streaming current measurement
  • Zeta potential measurements down to a few millivolts
Ideal for quick routine measurements

Ideal for quick routine measurements

  • Single-point surface zeta potential measurements
  • Zeta potential analysis of reactive materials
  • Zeta potential analysis of samples in buffer solutions
Measuring cells for any sample geometry

Measuring cells for any sample geometry

  • Cylindrical Cell for powders (min. particle size 25 µm ) and fibers
  • Clamping Cell for non-destructive measurement of planar solids
  • Adjustable Gap Cell for small samples
  • Sample-specific measuring cells for contact lenses, hollow fiber membranes, and flexible tubings
High efficiency and sample throughput

High efficiency and sample throughput

  • Quick exchange of measuring cells: plug-in and go
  • Zeta potential measurement in <2 minutes
Upgrade options for a future-proof investment

Upgrade options for a future-proof investment

  • Unlock software features and add a titration unit for automated pH scans and analyses of the isoelectric point
  • Enable recording of liquid-on-solid surface adsorption kinetics

Technical Specifications

Measuring range
Streaming potential ± 2000 mV ± (0.2 % + 4 μV)
Streaming current ± 2 mA ± (0.2 % + 1 pA)
Cell resistance5 Ω … 20 MΩ ± (2 % + 0.5 Ω)
Pressure measurement1200 mbar ± (0.2 % + 0.5 mbar)
pH valuepH 2 … pH 12 
Conductivity0.1 ... 1000 mS/m
Temperature20 … 40 °C
Sample size requirements
Clamping Cell Min. 35 mm x 15 mm or min. 17 mm in diameter
Max. thickness 40 mm
Cylindrical Cell Particle size > 25 μm
Adjustable Gap Cell 20 mm x 10 mm, max. thickness 2 mm
Adjustable Gap Cell for Disks Diameter 14 mm, 15 mm, max. thickness 2 mm
Technical Requirements
Mains supply AC 115…230 V, 50…60 Hz, 200 VA
Dimensions600 mm x 432 mm x 245 mm (D x W x H)  
Footprint: 612 mm x 536 mm (D x W)
Clearance: 360 mm
Weight24 kg
Software requirements  
  • Microsoft Windows® 7 32/64 bit with SP1 or later is required. Windows 7 Starter is not supported.
    Microsoft Windows® 8 32/64 bit
    Microsoft Windows® Server 2008/2008 R2 32/64 bit with Service Pack 2 or higher is required for Windows Server 2008
    Microsoft Windows® 10 32/64 bit
  • Intel® Core™ i3 CPU
  • 4 GB RAM (depends on operating system)
  • 20 GB free disk space
  • 1 free USB port
  • Screen resolution of at least 1024 x 768 at True Color (32 bit)
 

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