A professional who tests and maintains strength of chemical solutions used in treating cloth. Respnsibilities include:

• Dips sample of solution from finishing machine and titrates solution against known acid or alkali to determine strength, using burettes and chemical indicator, or tests specific gravity of solution, using hydrometer.
• Turns valve to admit liquid chemicals or scoops dry chemicals into finishing machine to maintain specified strength.
• Records test results.
• May be designated according to chemicals tested as acid-strength inspector; caustic-strength inspector.