Blue Marker Dye
Blue Marker Dye.
Blue Marker Dye is a soluble liquid, highly concentrated, non-permanent blue dye.
Blue Marker Dye is safe to use with all approved pesticides where treated areas need to be clearly identified to prevent repeat treatment or misses during application.
With all pesticide formulations except mineral acid e.g. sulphuric acid or alkalis e.g. sodium hydroxide.