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Related Concept Videos

Simple Staining Technique01:24

Simple Staining Technique

OverviewStaining techniques in microscopy enhance the visualization of microorganisms by increasing contrast and allowing the differentiation of cellular structures. Simple staining is one of the fundamental methods used to observe the basic morphological characteristics of microorganisms, including their size, shape, and arrangement. This method relies on the application of a single dye to stain the entire cell, producing a clear contrast between the cell and the background.FixationFixation is...
Preparation of Samples for Electron Microscopy01:20

Preparation of Samples for Electron Microscopy

To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...

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Related Experiment Video

Updated: May 8, 2026

Visualizing Proteins and Macromolecular Complexes by Negative Stain EM: from Grid Preparation to Image Acquisition
08:01

Visualizing Proteins and Macromolecular Complexes by Negative Stain EM: from Grid Preparation to Image Acquisition

Published on: December 22, 2011

An optimized device for staining electron microscopy grids.

E Mathieu1, K Benmlih, R Fabre

  • 1French National Institute of Health and Medical Research, University of Strasbourg , Faculty of Dentistry, INSERM UMR-1121, 67085 Strasbourg Cedex , France.

Biotechnic & Histochemistry : Official Publication of the Biological Stain Commission
|August 22, 2013
PubMed
Summary
This summary is machine-generated.

A new device enables efficient staining of multiple transmission electron microscopy (TEM) grids using minimal reagents and reducing chemical waste. This innovation offers a practical solution for faster, eco-friendly TEM sample preparation.

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Area of Science:

  • Microscopy
  • Materials Science
  • Biotechnology

Background:

  • Transmission electron microscopy (TEM) requires precise grid staining for high-resolution imaging.
  • Current staining methods can be time-consuming, reagent-intensive, and generate significant chemical waste.
  • There is a need for efficient, environmentally conscious staining techniques in TEM.

Purpose of the Study:

  • To develop and validate a novel device for the rapid and efficient staining of multiple TEM grids.
  • To optimize staining parameters including reagent volume, evaporation, and flow rate.
  • To assess the device's effectiveness in reducing reagent consumption and chemical waste.

Main Methods:

  • Development of a multi-grid staining apparatus.
  • Investigation of uranyl acetate evaporation rates at varying temperatures.
  • Optimization of rinsing volumes and flow rates for efficient staining.
  • Comparative analysis of reagent consumption with existing methods.

Main Results:

  • The new device stains five TEM grids using only 260 μl of reagent.
  • Reagent evaporation was less than 6%, even at 37°C.
  • The apparatus significantly reduces chemical waste and processing time compared to traditional methods.
  • The device offers a cost-effective alternative to expensive commercial staining solutions.

Conclusions:

  • The developed staining device provides an efficient, economical, and environmentally friendly method for TEM grid preparation.
  • It streamlines the staining process, enabling simultaneous processing of multiple grids.
  • This innovation represents a practical compromise between manual, time-intensive methods and costly, reagent-heavy commercial alternatives.