Whatman™ Filters for Water, Air and Soil Testing
Accurate and reliable analytical results are important when monitoring air, water and soil for Environmental testing. GE knows that you need to be sure your filtration step is efficient, reproducible and preserves the integrity of your sample. Whatever you are using one of our glass papers, syringe filters or other Whatman™ products, you can count on GE to understand that quality matters.
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| NEW RTU* filters available! *Ready-To-Use |
40 Years of Environmental Sample Prep and Testing Experience in 21 Minutes
Whatman™ Filters for Water Testing
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With Whatman™ filters you can test your samples according to the environmental water testing requirements. The following testing have to be performed:
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Whatman™ has developed specific filters to guarantee reliable results and to let you perform easily each analysis even starting from critical samples.
For example, with the 934-AH RTU glass fiber filters, which are supplied in a prewashed and preweighed format, enable a considerable time saving when performing suspended solid analysis.
The GD/XP syringe filters, including an integrated prefiltration with dual-layer prefilter stack and one final 0.45 micron membrane, allow an easy filtration of hard-to-filter samples. Futhermore the pre-filter in polypropylene minimizes ion extractables making them suitable for metal trace analysis by ICP-MS. Find out how Anotop™ IC, Puradisc Aqua 30, Puradisc, Spartan, GD/XP and GD/X™ and Mini-Uniprep can help you!
Customer testimonial: Whatman™ filters for Water Quality Testing
New: the RTU (Ready-To-Use) family is now extended with the filters
GF/C RTU for Dissolved and Suspended Solids in accordance with EN872
934-AH RTU for Volatiles in accordance with US EPA Lab Standard Method 2540 C and D
Ready-to-Use: Pre-washed, dried/ignited, cooled, desiccated, weighed to 4 decimal places and placed in labelled/barcoded pan and barcoded box
Request Whatman filter samples for WATER
Total suspended, dissolved and volatile solids have to be determined by using glass fibre filters. The 934-AH RTU glass fiber filters are ready for use!
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Glass microfibre filters without binder, grade GF/C, Whatman Application: Highlight 1: Highlight 2: Standard Method Compliance: Filter type: |
Glass microfibre filters without binder, grade 934-AH, Whatman Application: Highlight 1: |
New RTU for volatiles available Glass microfibre filters, 934-AH™ RTU, Whatman Application: Highlight 1: Highlight 2: Standard Method Compliance: Filter name: 934-AH RTU Filter Type: Glass fiber filter |
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Glass microfibre filters without binder, grade GF/C RTU, Whatman Application: Highlight 1: Highlight 2: Standard Method Compliance: Filter name:GF/C RTU Filter Type: Glass fiber filter |
Demo of Glass microfiber filters, 934-AH™ RTU, Whatman
Chemical analysis are commonly performed using analytical instrumentation. Filtration of water samples prior to analyis is good practice in order to remove unwanted particles from the analysis and to protect delicate instrumentation from potentially damaging compounds.
In this section you can find filters for:
- dissolved heavy metals determination (GD/XP™ Syringe filters, In-line filters Polydisc™ GW and Polycap™ GW)
- dissolution ions sample preparation (Anotop™ IC syringe filter)
- dissolved organic carbon (DOC) determination (Puradisc™ Aqua 30 syringe filter )
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Syringe Filters, Anotop™, Whatman Application: Highlight 1: |
Syringe Filters, Puradisc™ Aqua 30, Whatman |
HPLC/UHPLC, and other analytical techniques
To protect your instruments and your sample, use the following filters:
Demo of Whatman GD/X™ syringe filter
Demo of Whatman Mini-UniPrep™
Microorganisms in a water sample are collected using a microfiltration membrane filter.
The membrane can be transferred onto a microbiological culture medium for further identification and/or quantification of microorganisms. The appropriate membrane filter choice will depend on the methodology being followed.
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Membrane Filters, Mixed Cellulose Ester, Whatman |
Membrane Filters, MicroPlus and ME, Whatman |
Membrane Filters, Polyamide Membrane, Whatman Application: |
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Membrane Filters, Nuclepore™ Black, Whatman Application: |
VWR can provide you a complete product range of consumables, equipments and reagents for Environmental analysis. Use the search tool in our home page or contact your sales representative.
Whatman™ Filters for Air Testing
Air quality monitoring is getting more and more important because of the presence of high amount of air pollutants in the ambient air. The sources of emission can be natural or caused by industries, agriculture or transport traffic. Ultrafine particles (UFPs) have become a key area of interest in environmental monitoring and related studies as they have been shown to have potentially significant impacts on air quality and health.
Heavy metals, organics and inorganics chemicals such as ozone, volatile organic carbons, SO2, NO2, CO, benzoate, or asbestos has to be monitored too.
Whatman™ can support you with dedicated filters for particulate monitoring both manual and automated; for sampling in normal or aggressive enviroments; for radioactivity, metals or asbestos testing.
Make your choice between 13 different types of Whatman™ filters for air sample testing:
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Request Whatman filter samples for AIR
Manual sampling in normal environments
Manual sampling in aggressive environments
Automated sampling
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Glass Microfibre Filters with Binder, Grade GF 10, Whatman Application: Highlight 1: |
Sampling for radioactivity and metal analysis
Filters for the determination of metals in ambient particulate
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Membrane Filters, Mixed Cellulose Ester, Whatman Application: Highlight 1: |
Air pollution monitoring from stacks, flues and aerosols requires a filter that can whithstand chemically harsh environments and high temperatures. High-purity is also required for this application.
Filters for heavy metals analysis
Filters for other organic or inorganic chemicals
VWR can provide you a complete product range of consumables, equipments and reagents for Environmental analysis. Use the search tool in our home page or contact your sales representative.
Whatman™ Filters for Soil Testing
From an environmental point of view, soil is a primary element of the ecosystem, together with water, air and living organisms, and therefore needs to be protected and preserved by possible degradation phenomena. On the other hand, the use of fertilizers for agricultural activity is a powerful means of increasing the productivity of the soils and therefore yields of crops.
Soil sample analysis requires that chemical compounds are first extracted from their matrix using pH and heat modulation and concentrated. Nitrogen, pesticides, phosporous, retained solids and clarified solutions, pH have to be determined in soil samples. Whatman™ can provide you the right product for each testing.
Request Whatman filter samples for SOIL
Kjeldal nitrogen analysis
Soil nitrogen content is typically done with Kjeldal techniques, which involve the sampling of an exact amount of soil before transfer to a digestion tube. For this aplication you need to use the Whatman™ low nitrogen content weighing boats and then filter the sample with qualitative paper.
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Qualitative Filter Papers, Standard Grades, Grade 4 and 4V, Whatman Application: |
Kjeldahl Weighing Boats, Whatman Application: |
Prior to analysis by, for example, gas chromatography (GC), soils may be prepared using Soxhlet extraction or microwave digestion. Extraction thimbles are widely used for this technique. To remove fine particles and protect your GC instrument use specific syringe filters.
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Most trace element tests are based on extracting soil and measuring the concentration of trace elements in the soil-free liquid phase using for example inductively coupled plasma atomic emission spectrometry (ICP-AES). The sample then generally needs to be filtered through a qualitative filter paper or glass fiber filter to make sure it will not clog nebulizers or interfere with injection into the analysis instrument. If digested with acqua regia, the sample may be filtered through an ashless filter paper.
Demo of Whatman GD/X™ syringe filter
Demo of Whatman Mini-UniPrep™
Through soil phosphorus testing, the amount of phosphorus fertilizer required to achieve maximum plant growth can be determined. To determine the soil phosphorus content, the soil is extracted with a chemical solution and the phosphorus content in the extract is measured by colorimetry. Filtration of the extract through a qualitative filter paper is generally needed before analysis. If an automated method is used for determining phosphorus concentration, acid-resistant filter paper may be needed.
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Quantitative Filter Papers, Ashless Grades, Grade 41, Whatman |
The pH of soil is vital for how well it holds minerals. Some plants have very particular pH requirements. There are many different ways of measuring soil pH. Litmus/pH paper is a quick and inexpensive method to test soil pH when a pH-meter is unavailable or when highly precise values are not necessary. When preparing your soil sample, use a weighing paper to weigh the soil before adding water. Filter papers can be used to remove unnecessary particles from the suspension.
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Various test methods require that liquid components of a solution be separated from suspended solids prior to analysis. GE offers a wide choice of cellulose filter papers with different levels of flow rate, loading capacity, and chemical resistance to support these applications.
VWR can provide you a complete product range of consumables, equipments and reagents for Environmental analysis. Use the search tool in our home page or contact your sales representative.