Illustration of a vibrant pH scale with litmus paper strips, designed for educational purposes, set against a white background.
Schlüsselwörter
test,
illustration,
ph,
scale,
colourful,
strip,
paper,
chemistry,
education,
scientific,
spectrum,
isolated,
front,
background,
tool,
analysis,
colours,
gradient,
laboratory,
measurement,
solution,
acid
Deutsch
