... objects of the investigation were parts of the bark and buds of sprouts of arboreous plants of 12 species growing under natural conditions in the vicinity of the Department of Biology of MSU: Siberian cedar (Pinus sibirica), larch (Larix sibirica ...
... At acid pH, the main absorption band of phenol red is around 430 nm (yellow solution), at alkaline pH it is around 559 nm (red or purple solution). ...