Universal Indicator Blue was created in 1992.
Universal Indicator Green was created in 1995.
Universal Indicator Yellow was created in 1993.
Universal Indicator Red was created in 1993.
When an alkali is added to universal indicator, the color of the indicator will typically change to blue or purple, indicating a high pH. Alkalis are substances that have a pH above 7 and tend to turn universal indicator towards the blue end of the spectrum.
Alkalis turn universal indicator blue or purple.
When universal indicator is put in water soluion of alkalis (base) it indicates significant blue colour.
A base typically turns universal indicator solution blue or purple.
Alkalis turn universal indicator blue or purple.
Universal indicator turns shades of blue or purple in an alkali.
The gas that turns a universal indicator blue is usually chlorine.
The universal indicator in saliva typically appears green or blue in color.
The color of a universal indicator in a basic solution is usually purple or blue.