BS ISO 20759:2017 pdf free.Traditional Chinese medicine一Artemisia argyi leaf. The following requirements should be met before separating the bulk sample into test samples. a) Artermisia argyl leaf shall be clean and free from foreign matter. b) The presence of moldy leaves, external contaminants and living insects which are visible to the naked eye shall not be permitted. 5.2 Macroscopic characteristics The leaves are mostly crumpled or broken, with short petioles and usually without pseudostipule at the base. The leaf blade is broad ovate, rhombic-ovate, or ovate-elliptical, 5 cm to 9(16) cm long, 4 cm to 8(16) cm wide, and pinnatipartite to pinnatifId; segments in two or three pairs, elliptical-lanceolate, or elliptical-oblanceolate, frequently 1 cm to 1,5(3) cm wide, with margin irregularly dentate or lobed or wide serrate, dentate piece or wide sawtooth, mostly asymmetrically ovate-lanceolate, ovate-triangular, or entire. Smaller leaves are fewer, pinnatipartite, tn-cleft, and sometimes entire and elliptical to lanceolate. The upper surface is greyish-green or dark yellowish-green, possessing somewhat sparse pubescences, denser glandular dots and small pits; lower surface is covered densely with greyish-white tomenta. The petiole is usually 2 mm to 8 mm long, and up to 1,3 cm in the cultivated plants. It has a specific,…