When measuring soils for Soil Mineral Nitrogen, it is important that the samples remain cool in transit, otherwise mineralisation will take place. Insulated boxes can be ordered by filling in the form on this page. Please estimate how many boxes you will require for the whole season and order them all at once to keep delivery costs down. Each sample box can contain up to 6 samples, so if you plan to take, for example, 20 samples this season, please order 4 boxes. Soil augers are charged at £65.00 each.