aesthetic problems, irrigating with large amount of iron in the water is not a long term sustainable solution. the short term ( years) trigger value for iron toxicity and soil deterioration is a maximum of mg/l in the water used for irrigation. typical sources of iron fouling are anoxic aquifers containing...
; paints and varnishes; putty and other mastics; inks hs codes chapter chapter codes chapter description chapter- dyeing extracts; tannins and their derivatives; dyes, pigments and other colouring matter; paints and varnishes; putty and other mastics; inks hs codes heading heading description gst rate...