Litmus "Lecanora tartarea" (Norway, Sweden), "Variolaria dealbata", "Ochrolechia parella", "Parmotrema tinctorum", and "Parmelia". Currently, the main sources are "Roccella montagnei" (Mozambique) and "Dendrographa leucophoea" (California). The main use of litmus is to test whether a solution is acidic or basic. Wet litmus paper can also be used to test for water-soluble gases that affect acidity or alkalinity; the gas dissolves in the water and the resulting solution colors the litmus paper. For instance, ammonia gas, which is alkaline, turn the red litmus paper blue. Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or
Test of Adolescent and Adult Language Test of Adolescent and Adult Language The Test of Adolescent and Adult Language: Third Edition (TOAL-3) is a standardized, norm-referenced assessment of receptive, written and expressive language. The TOAL-3 was published in 1994. The test used to help identify individuals who may have a language disorder, and to help determine in what area(s) the dysfunction lies. Though the test is commonly administered by a Speech and Language Pathologist (SLP), it can also be administered by anyone who has some training or practice administering language or psychology type tests, and has familiarized him/herself with the test and scoring procedures. The TOAL-3