Who in the world – well you now know it’s us?

July 30, 2012

The Van Walt team is expanding – we’re definitely up for the challenge – new country and new opportunities!

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Van Walt Guidelines for sampling for PFAS in Groundwater

November 13, 2024

We 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, 2023

Environmental 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, 2023

The interest in Nitrates is nothing new. One way or another we have been measuring them for half a century.

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