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Related Experiment Video

Updated: Jun 28, 2026

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices
10:22

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices

Published on: September 2, 2009

Application of a multichannel dropping dispenser in segmented continuous flow analysis.

V Kuban1, L G Danielsson, F Ingman

  • 1Department of Analytical Chemistry, Masaryk University, CS-61137 Brno, Czechoslovakia.

Talanta
|February 1, 1992
PubMed
Summary

This study introduces a microbatch technique using a dual channel dispenser for precise sample analysis. It enables simultaneous reactions in an organic solvent flow, preventing carryover for accurate measurements.

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Area of Science:

  • Analytical Chemistry
  • Chemical Engineering

Background:

  • Traditional analytical methods can suffer from carryover and require larger sample volumes.
  • Developing microscale techniques is crucial for efficient and sensitive chemical analysis.

Purpose of the Study:

  • To present a novel "microbatch" technique for performing chemical analyses on a microlitre scale.
  • To demonstrate the versatility of this method for various analytical applications.

Main Methods:

  • A dual channel dropping dispenser introduces aqueous sample and reagent into a continuous organic solvent flow.
  • Each aqueous segment is encapsulated by the organic phase, creating isolated micro-reaction systems.
  • Analytical signals are measured directly on homogenized reaction mixture segments.

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A Microfluidic Platform for Precision Small-volume Sample Processing and Its Use to Size Separate Biological Particles with an Acoustic Microdevice
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A Microfluidic Platform for Precision Small-volume Sample Processing and Its Use to Size Separate Biological Particles with an Acoustic Microdevice

Published on: November 23, 2015

High Throughput Single-cell and Multiple-cell Micro-encapsulation
16:19

High Throughput Single-cell and Multiple-cell Micro-encapsulation

Published on: June 15, 2012

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Last Updated: Jun 28, 2026

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices
10:22

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices

Published on: September 2, 2009

A Microfluidic Platform for Precision Small-volume Sample Processing and Its Use to Size Separate Biological Particles with an Acoustic Microdevice
11:32

A Microfluidic Platform for Precision Small-volume Sample Processing and Its Use to Size Separate Biological Particles with an Acoustic Microdevice

Published on: November 23, 2015

High Throughput Single-cell and Multiple-cell Micro-encapsulation
16:19

High Throughput Single-cell and Multiple-cell Micro-encapsulation

Published on: June 15, 2012

Main Results:

  • The technique effectively prevents carryover between aqueous segments.
  • Demonstrated applicability for determining light-absorbing species.
  • Successful implementation for sample dilution, one-standard calibration, and micro-titrations.

Conclusions:

  • The "microbatch" technique offers a simple yet effective approach for microlitre-scale chemical analysis.
  • This method provides precise control over reaction volumes and prevents cross-contamination.
  • It is a versatile tool applicable to diverse analytical challenges in chemistry.