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Van Walt
Van Walt Guidelines for sampling for PFAS in Groundwater
November 13, 2024We need to make clear, that at the time of writing, there are no ISO or EN standards which deal with the sampling of groundwater for PFAS.
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Spot measurement v. continuous environmental monitoring
August 25, 2023Environmental monitoring has developed considerably over the years. From the time when a consultant went out monthly or quarterly with a dip tape to monitor the groundwater level in a borehole, wind forward...
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Measuring Nitrates (NO3, NO3-N) in the field
June 20, 2023The interest in Nitrates is nothing new. One way or another we have been measuring them for half a century.
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Van Walt Environmental Equipment
A small selection of our environmental equipment