Felite™ FMB401 is the mixture of Felite™ FC108-H (hydrogen form strong acid cation resin) and Felite™ FA127-OH (hydroxide form type I strong base anion resin) with the ratio 2:3, and is a higher level of Felite™ FMB401-L.
Felite™ FMB401 is designed to produce very high water quality and is intended to use in all mixed bed deionization applications that require high resistivity and high capacity.
Felite™ FMB401 is particularly well suited for portable exchange and other polishing applications. It’s supplied ready to use form, and the resistivity can reach up to 18megohms.
Mixed Bed Demineralization;
Sulfonic Acid / Type I Quaternary Ammonium
Ionic form, as shipped
99% H+ / 90% OH-
Total Capacity (mmol/ml)
2.0 min. (Na+) / 1.4 min. (Cl-)
2 : 3
50 - 60%
Particle Size Range (mm)
0.3 - 1.2
(≤0.3mm, 1% max.; ＞1.2mm, 5% max.)
Uniformity Coefficient (max.)
Shipping Weight (g/L, approx.)
705 - 740 (44 lb/ft3)
Temperature Limit (Regenerable Bed)
Temperature Limit (Non-Regenerable Bed)
Stability, pH Range
0 - 14
SAC / SBA, Gel
Ratio: 2 : 3
H+ / OH- form