The report summarizes results from reference measurements at a chemical Field Trial held in Umeå 2010. The field trial was performed by the Swedish Defence Research Agency (FOI) at the Swedish Armed Forces field trial area Brånet, north of Umeå. the reference measurements include concentration readings of triethyl phosphate and sulphur dioxide at six different locations by AP2C (Proengin), and of ethyl lactate and ammonia by Gasmet DX-4030 (Gasmet Technologies Oy) at the centre of the field. Smoke was used as an interferent and referenced by a particle sizer (APS from TSI Inc.). Weather data (temperature and wind speed) from each day is also provided in the report.