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What is laboratory dispersion and homogenization?

27 Feb 2024

In the ever-evolving landscape of laboratory technology, digital dispersers have become indispensable tools for achieving precise and efficient sample preparations across various industries such as Cosmetics, Food and Feed, Pharma and Biotech, and much more.

These versatile instruments play a significant role in achieving homogeneous dispersions and high speed mixing of various materials, ensuring effective sample processing, and, consequently, accurate analytical results.

What is dispersion?

Dispersion refers to the process of distributing or spreading a substance, such as particles or components, evenly throughout a medium. In the context of laboratory work, dispersion often involves creating a homogeneous mixture or distribution of particles within a solution or matrix, ensuring uniformity and consistency.

In practical terms, dispersion can take various forms and usually describes a laboratory application in which it is necessary to mix, suspend, emulsify, disintegrate, and dissolve two or more immiscible phases in a fluid to produce a mixture.

How does homogenization work?

In the context of laboratory dispersers, like the OV 625 Digital Disperser, homogenization is facilitated through the mechanical action of a high-speed rotating blade (the rotor) within a stationary stator.

The instrument creates a shearing effect, breaking down aggregates and dispersing particles evenly in the sample solution. The speed and efficiency of this process contribute to the homogeneity of the final mixture and the achievement of the desired particle fineness.

Which dispersing tools can be used?

Various dispersing tools can be used to achieve effective sample dispersion based on a specific laboratory application.

The choice of dispersing tool depends on factors such as the sample type, size, and the degree of dispersion particle fineness required: selecting the proper dispersing tool is crucial to achieving the best performance and high reproducibility.

Different types of dispersing tools are required to process different fluids. Sometimes it is necessary to use two dispersing tools to achieve specific requirements. Together with the convenient quick disconnect and installation system, it is possible to effortlessly change the dispersing tool so you can move onto the next step of the homogenization process.

Watch the IH0316 OV 625 Digital Disperser in action, in the video below.


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What is laboratory dispersion and homogenization?

Mini-UniPrep Syringeless Filters

06 Feb 2024

Cytiva's Whatman Mini-UniPrep Syringeless Filters provide efficient and cost-effective sample preparation for HPLC and other applications.

These syringeless filters combine four products into one solution for efficient chromatography sample preparation across a broad range of applications. They are built for fast and easy high performance liquid chromatography sample preparation and analysis.

Features and Benefits

  • hand holding syringe filterAll-in-one filtration device for quick and cost-effective chromatography sample processing
  • Eliminates the need for separate syringes, syringe membrane filters, vials, and septa - significant reduction in waste.
  • Designed for use with an UHPLC or HPLC autosampler for high-throughput analysis
  • 0.2 µm and 0.45 µm filter pore sizes available to meet filtration sample requirements
  • Compatible with most major autosamplers
  • Amber option to prevent photo-degradation of light-sensitive samples, or translucent for easy visual inspection. Made from polypropylene (PP) material
The Whatman Mini-UniPrep G2, which is a borosilicate glass vial version is also available, eliminating plastic-based leachables that can originate from a polypropylene vial.

How the Mini-UniPrep Syringeless Filters Work?

Mini-UniPrep syringeless filters can be used either manually or with a multicompressor. The multicompressor allows for processing of multiple filtration samples, further reducing sample preparation time for chromatographic analysis.

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Using the Mini-UniPrep syringeless filter is easy. If you are not using a multicompressor, simply place your sample in the Mini-UniPrep device, insert the plunger, and compress. Your sample is filtered rapidly and easily. The unique design allows the liquid sample to be forced into the reservoir of the plunger. Any excess air escapes though the vent hole, until the seal is engaged. The Mini-UniPrep syringeless filter can then be used in an autosampler.

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Mini-UniPrep Syringeless Filters

Introducing new tools for your laboratory.

29 Nov 2023

Glas-Col is a leading manufacturer of laboratory and industrial equipment who produce high-quality heating mantles, laboratory shakers and mixers, air-filtration systems and a wide variety of laboratory products such as glove bags.

Consider using a glove bag instead!

Glove bags are flexible, inflatable chambers with integrated gloves that allow work in an isolated and controlled environment. Depending on the model ordered, the equipment sleeve is sealed with either a zip type closure or a two-piece clip. Cotton gloves and a nylon gas port sleeve are also included for added convenience. Glas-Col glove bags are made from high clarity polyethylene for added strength and visibility.

Convenient

Glove bags are used like a rigid glove box but with greater flexibility. It is made of polyethylene, with integrated gloves. Equipment is placed in through the sleeve ports and the bag is then inflated to work on the inserted items.

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These glove bags are economical enough to be used once and discarded when contaminated, however durable enough to be used over and over if desired.

Versatile

Ideal for keeping sensitive materials from contact with air or moisture. Use it whenever an inert atmosphere is required for particular reactions or in handling reagents.

These glove bags can be used alongside rigid glove boxes, as they can be purged faster with less gas, and can be easily adapted to fit your specific requirements.


Vortexer - Mixer and Shaker
Features and Benefits


Vortexer

Glas-Col mixers are an affordable laboratory vortexer which can be used in conjunction with various types of tubes. Applications include solution phase synthesis, for when a good mixture of heterogeneous solutions is needed. In Solid Phase chemistry the pulsation feature is extremely useful for the full reaction of resins, and other materials.

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The flexibility of different sized tubes.

The cartridge design of Glas-Col’s Multi-Pulse Vortexer allows the user to switch the size of tubes to be mixed simply by changing the cartridge size, thus eliminating the need for extra racks. Cartridges are available for test tube and centrifuge tubes, either capped or uncapped. Each cartridge is constructed of chemical resistant foam and ABS plastic. An optional blank cartridge allows the flexibility to use standard tube racks. The unit easily adjusts for different height tubes and allows them to remain visible during mixing. Additional sample can be added to uncapped tubes without stopping the mixing action.

Features

  • Variable speed for precise mixing.
  • Pulsing feature interrupts vortexing to join upper and lower strata for more thorough mixing of samples.
  • DC motor with filtered control for smoother operation and longer motor life.
  • Interchangeable cartridge system allows units to be adapted to different vessels easily.
  • Vortexers come in different sized models to suit most applications in the laboratory.

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Introducing new tools for your laboratory.
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