We require membrane pore size analyzers meeting these specifications:  
? Measurement principle: Gas-liquid displacement method (bubble point technique)  
? Capable of measuring 0.02μm-500μm pore size with pressure range 0-35 bar  
? Must test maximum/minimum/average pore size, porosity percentage, and permeability  
? Requires dual pressure sensors and automatic range switching  
? Testing speed within 20-60 minutes per sample  
? Sample holders for 13mm/25mm/47mm diameter filters and tubular filters (12-70mm OD)  
? Prefer system using ethanol as wetting liquid with included 500mL supply  
Please confirm compliance with all technical parameters.