MUNKTELL filter paper no. 1288 Filtration Properties: Fast filtering, wide pores, hardened Applications: For coarse and voluminous precipitates such as ironhardened aluminum- and chromium hydroxide; Si-determination in steel and pig iron analysis (Typical properties) Basis weight (g/m²) 84 Filtration time for distilled water (s) 45 Wet bursting strength (kPa) >30 Dicke Thickness (mm) 0.21 Ash Content (%) <0.1