Posts tagged 'whatman'

Cytiva and TerraCycle
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Cytiva and TerraCycle

Cytiva have collaborated with TerraCycle to recycle filtration devices to help reduce how much ends up in landfills. TerraCycle was started in 2001 to help eliminate waste by making worm poop plant food from leftover food waste, and then was packaged in waste such as used soda bottles. Since 2001 TerraCycle has prevented over 8 billion pieces of waste ending up in landfills. Image of Terra...
Soxhlet extraction apparatus
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How do I set up Soxhlet extraction apparatus?

Soxhlet extraction is used for extracting a compound of low solubility from a solid sample (typically natural or environmental samples such as soil, sediment and more). It was invented by Franz von Soxhlet in 1879 for the extraction of a lipid from a solid sample and has since become widely used the world over. The Soxhlet extraction method uses a number of different glassware pieces. A Soxhlet...
What syringe filter is the best for my application?
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What syringe filter is the best for my application?

There is a huge selection of syringe filters available in all kinds of material, pore sizes and diameters.  When it comes to selecting the most appropriate one for your application this can make it seem like a bit of a minefield. We break the process down into a number of steps to help simplify selection. 1. Match pore size with your application Most types of syringe filters come in a selec...
Filters for air quality monitoring
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What types of filters are used for air quality monitoring?

Levels of airborne particulate pollution is measured as a means of monitoring air quality. Airborne particulates (PM) can be solid particles or liquid droplets. They come in different sizes, compositions and origins (i.e. natural or synthetic). This means they can all have differing effects on human health. PM2.5 and PM10 are two standard particle sizes that are monitored: Coarse particles...
Filter Papers
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Am I using the right filter material and size for my filtration?

Selecting the right filter for your lab filtration will help to ensure you get the desired results. After considering whether you need vacuum or gravity filtration, you then need to select a suitable filter material and size. [caption id="attachment_9504" align="aligncenter" width="300"] With so many types and sizes of filter paper available, make sure you choose the right one for the tas...
Filtering water samples
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Which filters are best to prepare samples for heavy metals analysis?

Filtering water samples before ICP-MS or HPLC analysis for heavy metals testing is good practice - to help protect these delicate instruments from damage caused by larger particles. However some filters can introduce interferences which may affect the results - so what type of filter is best for heavy metals analyses? Why filter samples? Samples taken in the field are often high in...
Suspended solids tests
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Which filter should I use for suspended solids tests?

Suspended solids tests are conducted as a water purity indicator, and to form part of discharge consent. The gravimetric method of suspended solids testing requires filter papers to be used, but these must be of the correct grade to ensure correct results. We've taken a look at which filter paper grades are approved for suspended solids tests.   Which filter paper should I u...
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How can I stop my syringe filters getting blocked up?

Syringe filtration is a great, quick method of filtering samples prior to further analysis by HPLC, UV-VIS analysis or other analytical techniques. Some samples which have a high amount of solid particulates in them can block up syringe filters, slowing down the process. GE Whatman have designed two specialist syringe filter ranges with a clever filter structure which aims to combat this,...
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How can I cut down HPLC sample preparation time?

The preparation of samples prior to HPLC or UHPLC analysis can be very time consuming, particularly in laboratories which analyse a high volume of samples. Filter manufacturers Whatman have developed a range of unique devices which can cut sample prep time by 1/3, and could even save money too - the UniPrep Vials [caption id="attachment_9638" align="aligncenter" width="300"] The UniPrep V...
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Filtration and filter paper types - what's the difference between filters?

When looking for filters there are a lot of different options available to suit different applications. It is important to ensure you choose the best type for your work, but what do the different terms mean? Paper or Cellulose Filters - these are manufactured from cellulose fibres and are used for general filtration. The particle retention level can go down to 2.5 µm. This type of filter pap...

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