Collecting an outdoor air sample is a key step in performing air sampling for mold. Since the naturally occurring mold in the outdoor air is constantly changing, it is important to capture the current levels at the time of your assessment. However, we often get questions about testing during abnormal weather conditions and what the best way to proceed is.
We have compiled a short list of conditions that may require some special considerations below. This is by no means an exhaustive list of all the weather you may encounter, but it should give you some good principles to add to your sampling knowledge base.
When the weather is below freezing, it is important to make sure to protect your sampling cassettes from the frigid temperatures. If the cassettes are exposed to the cold, make sure they are acclimated to room temperature before beginning sampling.
When sampling outdoors in periods of high winds, there are a few considerations to take when setting up your sampling equipment. If possible, orient the sampling inlet of the cassette into the direction of the wind.
In areas with seasonal snow cover, there are some important things to remember when collecting outdoor samples. With snow or ice cover on the ground, the outdoor mold levels can be near zero.
In periods of active rain, you want to do your best to keep the sampling cassette out of the rain. Sampling under an umbrella or other cover are good options to keep your equipment dry.
We hope these tips give you some more direction on how to sample during inclement weather. But as always, if you have any specific questions about sampling in inclement weather, please don’t hesitate to reach out.
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