Filter membrane for SDI water quality testing - Novah

Microporous membrane materials include mixed cellulose (MCE), cellulose acetate nylon (PA/NYLON), polypropylene (PP), polyether sulfone (PES), polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE), regenerated cellulose (RC), polycarbonate (PC membrane, core perforated), glass fiber (GF), etc. Mainly used for sample analysis, especially for filtering mobile phases and samples in chromatographic analysis, it has a good effect on protecting chromatographic columns, pipeline systems, and injection valves from contamination. It has been widely used in weight analysis, microanalysis, colloid separation, and sterile experiments.

Material Classification

1. cellulose acetateplain （CA）Strong hydrophilicity, suitable for filtering aqueous solutions, low protein adsorption. ‌
   

2. ‌ Polytetrafluoroethylenealkene （PTFE）Strong hydrophobicity, high temperature resistance (260 ℃), strong acid and alkali resistance, suitable for high-temperature sterilization scenarios. ‌

3. ‌ polypropylenealkene （PP）Strong hydrophilicity, resistant to organic solvents, and extremely low protein adsorption.

4. ‌ polyether砜 （PES）High temperature resistant disinfection and backwashing. ‌
   

5. ‌ Polyvinylidene fluoridealkene （PVDF）Strong hydrophobicity, resistant to organic solvents (excluding halogenated hydrocarbons), low protein adsorption. ‌
   

Application scenarios

• ‌0.22 μ m apertureUsed for sterilization and filtration (such as in biopharmaceuticals). ‌
  

• ‌0.45 μ m apertureConventional sample filtration (such as laboratory analysis). ‌

• ‌1-10 μ m aperturePre processing filtration (such as chemical raw material pre filtration). ‌
  

Core Features

• ‌High porosityUp to 80% or more, with low filtration resistance and fast flow rate. ‌

• ‌chemical corrosion resistancePTFE material can withstand strong acids and alkalis such as 98% concentrated sulfuric acid. ‌
  

• ‌high-temperature stabilityThe long-term use temperature of PTFE can reach 260 ℃.