What is the standard recommended pH range for water-based coolants used for steel machining?
9-9.5 - pH is a compromise:
- it must be high to limit bacterial growth (>8.5)
- it must be low in order to avoid skin irritation (<10)
9-9.5 - pH is a compromise:
- it must be high to limit bacterial growth (>8.5)
- it must be low in order to avoid skin irritation (<10)