Precautions for the use of stainless steel sintered porous materials：

1. During installation, disassembly and clean avoid scratches, collisions and falls on hard objects.
2. When using, the filtrate is filtered from the outside in to avoid the reverse direction.
3. Avoid instant pressurization when the filter element works.
4. When the filtration efficiency is less than 50%, the filter element should be cleaned in time.
5. When cleaning the filter element, the first back blow with pure gas, back blow pressure is 1.5 times of the working pressure, each time for3-5 seconds, and 4-6 times, then backwash with clean liquid for 3-5 minutes, repeat 2-3 times.
6. If the filter element is not good after online back blowing and backwashing, it should be removed and cleaned in time.

Method for cleaning stainless steel sintered porous materials：

1. The decarbonization filter elements in the pharmaceutical and chemical industries are mainly back blown and back washed, and the ultrasonic cleaning is the best.
2. The filter elements of the water industry are mainly rinsed with 5% concentration of nitric acid.
3. According to the chemical properties of the filtered impurities, the filter elements of the original liquid shall be respectively soaked in pickling (5% nitric acid) or alkaline washing (3-5% sodium hydroxide) and then washed with ultrasonic cleaning.