Crossword clues for the word: PHTEST The word PHTEST has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for PHTEST Showing 1 to 6 of 6 results Clue(s) Assessment of acidity Assessment of alkalinity Basic analysis? It returns a result from 0 to 14 Reason to use litmus paper Something that may challenge our basic assumptions?