1. Alkaline washing: soak the pure solution with 3-5% sodium hydroxide analysis for 30-60 minutes at a temperature of about 40 ° c.Best in ultrasonic cleaner.After soaking, wash with filtered deionized water or injection water inside and outside to neutral, measure the conductivity.Blow dry with pure air ≥ 0.4mpa.
2. Pickling: soak with 5% nitric acid solution for more than 8 hours at a temperature of 40 ° c.Best in ultrasonic cleaner.After soaking, wash with filtered deionized water or injection water inside and outside to neutral, measure the conductivity.Blow dry with pure air ≥ 0.4mpa.
3. The above two methods can be used independently or interchangeably.If there are conditions, can be combined with ultrasonic cleaning machine effect is the best.
4, organic pollution can be combined with surfactant cleaning, cell debris pollution system combined with enzyme cleaning effect is more ideal.
