Measurements of 60-Acrosses

• Litmus test nos
• Acidity nos
• Basic ones are over seven
• Light units: Abbr.
• Acidity-level symbols
• Acidity measures, informally
• Some chem-class measurements
• Factors in chem class
• H.H.S. arm

Wiktionary Word definitions in Wiktionary
n. (plural of pH English)