Dow Water & Process Solutions

DOWEX™ MARATHON™ A LB

A uniform particle size, strong base anion exchange resin specifically designed for layered bed applications.

Product Name	Type	Matrix	Functional Group
DOWEX MARATHON A LB	Type I Strong Base Anion	Styrene-DVB, Gel	Quaternary Amine

Guaranteed Sales Specification	Units	Cl- Form
Total Exchange Capacity, min.	eq/L	1.2
Total Exchange Capacity, min.	kgr/ft3 as CaCO3	26.2
Water Retention Capacity	%	50 - 56
Uniformity Coefficient		1.1 max.

Typical Physical and Chemical Properties	Units	Cl- Form
Whole Uncracked Beads	%	90
Mean Particle Size	μm	650 ± 50
Total Swelling (Cl- → OH-), approx.	%	20
Particle Density	g/mL	1.09
Shipping Weight**	g/L	670
Shipping Weight**	kgr/ft3 as CaCO3	42

** As per the backwashed and settled density of the resin, determined by ASTM D-2187.

For additional particle size information, please refer to the Particle Size Distribution Cross Reference Chart (40KB PDF).