SK1B resin is our “flagship” premium grade, gel-type, strong acid cation resin. It has excellent properties for industrial applications and is recommended for industrial-scale softening and demineralization applications. It has standard cross-linkage. In situations where the raw water contains oxidizing substances, higher cross-linkage resins such as SK110 and SK112 are recommended to provide better performance and longer operating life. SK110 is also recommended for regenerable mixed bed applications.

SK104H has a low (4%) cross-linkage. It is mainly used as a catalyst and in special applications where low crosslinked density is necessary to allow penetration of large organic molecules, or where a faster reaction rate is required.

Grade Name	DIAIONTM SK104H	DIAIONTM SK1B	DIAIONTM SK110	DIAIONTM SK112
Chemical Structure
Ionic Form As Shipped	H-form	Na-form
Whole Bead Count	90 min.
Shipping Density (g/L: approx.)	750	830	845	855
Salt Splitting Capacity (meq/mL-R)	1.1 min.	2.0 min.	2.0 min.	2.1 min.
Water Content (％)	62 – 72	43 – 50	35 – 45	32 – 42
Particle Size Distribution on 1180 μm (%) through 300 μm (%)	5 max. 1 max.
Effective Size (mm)	0.40 min.
Uniformity Coefficient	1.6 max.
Ionic Form Conversion H Form	95 min	－
Operating Temperature (℃)	120 (H-form, Na-form) max.
Crosslinkage (％)	Ca. 4	Ca. 8	Ca. 10	Ca. 12