Stafford, VA 22554 Quantico Corporate Center is conveniently located in Stafford, Virginia, just outside of the south gate to Quantico Marine Corps Base. Access to this eighty-five acre campus is available via US Route 1 or just seconds away from Interstate 95, exit 148.
Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5â8.3 at 25 Â°C (77 Â°F). Neutral litmus paper is purple. Litmus can also be prepared as an aqueous solution that functions similarly. Under acidic conditions, the solution is red, and under basic conditions, the solution is blue. Chemical reactions other than acid-base can also cause a color change to litmus paper.
As the name implies, paper is the primary ingredient in litmus paper. The wood used to make the paper is treated with solvents to get rid of extraneous substances such as lignin and resin; it is then infused with lichen, which is interestingly two organisms--an algae and a fungus--sharing one existence. Two popular varieties of lichen are used in litmus paper, Roccella Tinctoria and Lecanora Tartarea. I is used to determine the pH of a substance (wether acidic or alkaline).