Performing the service of analysis of 14 mineral soil samples (bulk, mixed, mineral soils from 0-0.2 m depth) from bellflower sites in Kampinos National Park. The order is co-financed by the European Union under Measure 2.4 of Priority Axis II of the Operational Program Infrastructure and Environment 2014-2020 POIS.02.04.00-00-0006/17: "FlorIntegral - integrated protection of in situ i ex situ rare, endangered and priority species of flora in Poland".