... price good service high quality Specification: ITEMSTANDARD42%TK20% SLPurity≥42%≥20% SLFree 4,4-bipyridylMax. 1g/kgMax. 1g/kgTotal terpyridinesMax.0 ... .001g/kgMax.0.001g/kgPH2.0 to 6.02.0 to 6.0All other specificationsAccording to FAO standardAccording to FAO ... , citrus, and sugarcane. Paraquat 42%TC,30.5%TC, 27.6%SL, 20%SL, 24%SL