For a particular application, the right choice of filter cap is essential for your measurement and assures the best results for long term performance.
Upon initial purchase of your particular relative humidity/temperature probe, you will be able to select the filter along with the probe together. To purchase a filter cap separately, the following table below is a complete list for you so you can do that. It might be a good idea in some cases to have spare filters on hand, or you might need a replacement filter. Whatever the reason, select the one you want and add to your cart for purchase!