Syringe filters are used to help filter samples containing solid particles, into sample tubes for analysis. These work by using a membrane with a particular pore size to catch any solids within the samples. The Camlab choice coloured filters are available with two different pore sizes, and in three different membrane sizes. Some of these filters come with pre-filters to catch any large particl...
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...
Vacuum filtration, sometimes known as Buchner filtration is used to isolate a solid product or impurity from a liquid filtrate. Any solid product or impurity can be left on the filter paper present within the funnel and easily removed, whilst the filtrate passes through the funnel into the flask at the bottom, to be used further or discarded. Whilst the set-up can be considered simple in itself...
There are two types of filtration which are commonly used in the laboratory and it is important to select the correct type for the work you are doing.
But what is the difference between gravity and vacuum filtration?
How do you choose what type of filtration you need to do?
And what equipment do you need for each type?
Vacuum Filtration - also known as Buchner filtration - for when you nee...
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...
Filtration under vacuum, also known as Büchner filtration, is commonly used to isolate the solid precipitate from a solution.
This technique is used in syntheses, for example when a reaction has yielded a solid, or in analyses including gravimetric analysis of suspended solids.
Although performing the filtration is simple, several pieces of equipment are needed which must all fit together, so...
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...
Vacuum filtrations using a Buchner flask and funnel with a vacuum pump are commonly used to isolate a solid of interest from a liquid.
Most commonly a porcelain Buchner funnel with a filter paper placed on top is used, but in some instances a sintered disc funnel is more appropriate.
But when would you select a sintered disc funnel? And how should a sintered disc filter funnel be cleaned ...
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,...
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...
How do you choose the right size filter paper for your funnel? Use the table below to see what size filter paper you should use Gravity filtration using a filter paper inside a filtration funnel is used to remove precipitates from a liquid. The remaining liquid is known as the filtrate. For standard shaped filter funnels where the walls are at 58 or 60° the table below shows the r...
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...
Thanks for sharing such a great information.. It really helpful to me.. I always search to read the quality content and finally i found this in you post. keep it up!
I came across your article about "DPD Tablets" on Camlab Info, and it's a valuable resource for anyone seeking information about water testing and analysis using DPD tablets. Your explanation of their usage and significance in water quality monitoring is quite informative.
This article on nanocolor tube tests is a gem for analytical enthusiasts. The idea of zero calibration is intriguing, and your detailed explanation makes it accessible. The step-by-step process helps demystify the technique for beginners like me. The use cases you've highlighted, particularly in...
Grant have introduced the new Controlled Rate Freeze Thaw (CRFT), which is a liquid nitrogen and cryogen free controlled rate freeze and thaw system for cryopreservation in a wide range of applications. Cryopreservation is a process where biological materials such as cells, tissues...
A dipslide is a means of testing the microbial content of liquids. This is a common method of monitoring and measuring microbial activity within many systems and commonly cooling systems. Usually the use of a dipslide is the first line of defence for the testing of microbial issues that could be...
Purchasing items using donated funds without the burden of VAT will now save many Millions of pounds each year which can be put to better use in advancing scientific knowledge to provide new treatments and cures that will shape the medicines of the future.
Working with pressure/vacuum conditions in the lab is common but not all products are designed to withstand this. Products with appropriate geometry and wall thickness are suitable for working safely with pressure. For example, filtering flasks, desiccators, or flat flange vessels, as well as...
