1)Difenacoum 96%TC,0.25% 0.5% 2.5%TK 2)Quality ... Pestic. Plant Growth Regul., 1988, 16, 151) or by u.v. spectrometry (details from Sorex (London) Ltd). Residues determined by hplc ... to leach; no leaching in 30 cm lab. columns. Difenacoum 96%TC,0.25%,0.5%,2.5%TK