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The Laboratory People

Camlab's blog and information database

Category: Filtration

What syringe filter is the best for my application?

September 7, 2020 Sarah Brudenell Leave a comment

There is a huge selection of syringe filters available in all kinds of material, pore sizes and diameters.  When it…

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A complete vacuum filtration apparatus setup

Vacuum Filtration- How do I secure the funnel to the flask?

July 25, 2019July 25, 2019 Sarah Brudenell

Vacuum filtration, sometimes known as Buchner filtration is used to isolate a solid product or impurity from a liquid filtrate….

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What is the difference between gravity and vacuum filtration?

March 12, 2019September 7, 2020 Karen Lemon 1 Comment

There are two types of filtration which are commonly used in the laboratory and it is important to select the…

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Filter papers

Am I using the right filter material and size for my filtration?

October 10, 2018October 8, 2018 Karen Lemon

Selecting the right filter for your lab filtration will help to ensure you get the desired results. After considering whether you…

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Filter papers

Whatman No 1 filter papers- why are they so frequently used?

September 10, 2018 Karen Lemon

Whatman No 1 filter paper is made of cellulose fibres for routine applications with medium retention and flow rate: The…

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What equipment do I need to perform a vacuum filtration?

July 17, 2018September 10, 2020 Sophie Bryant

Filtration under vacuum, also known as Büchner filtration, is commonly used to isolate the solid precipitate from a solution. This…

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Which filter should I use for suspended solids tests?

June 7, 2017February 18, 2020 Sophie Bryant

Suspended solids tests are conducted as a water purity indicator, and to form part of discharge consent. The gravimetric method…

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Buchner funnel with sintered disc

Sintered disc or sintered frit filtration funnels – how to care for sintered discs? When to select a sintered disc funnel? What do sintered disc grades mean?

February 15, 2017February 13, 2017 Sophie Bryant

Vacuum filtrations using a Buchner flask and funnel with a vacuum pump are commonly used to isolate a solid of…

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How can I stop my syringe filters getting blocked up?

October 31, 2016October 24, 2016 Sophie Bryant

Syringe filtration is a great, quick method of filtering samples prior to further analysis by HPLC, UV-VIS analysis or other…

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How can I cut down HPLC sample preparation time?

July 11, 2016July 6, 2016 Sophie Bryant

The preparation of samples prior to HPLC or UHPLC analysis can be very time consuming, particularly in laboratories which analyse…

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filters for suspended solids analysis

How do I measure suspended solids? How is the gravimetric method different to other methods?

February 29, 2016March 2, 2016 Sophie Bryant

The measurement of Suspended Solids is often required for discharge consent, and values may be reported to the Environment Agency…

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What size filter paper do I need for my funnel?

September 24, 2014October 10, 2014 Sophie Bryant

How do you choose the right size filter paper for your funnel? Use the table below to see what size…

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