ProSelect Tannin Resin

Specialty Resin

	ProSelect™ Tannin

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FILTRATION MEDIA INDEX | SPECIALTY RESINS INDEX | DOWNLOAD PDF

ProSelect™ Tannin (P/N ER20001) is the choice for color, organics, and tannin contaminated waters. It works as an organic screen, either as a stand-alone prefilter for a softener, or in some applications as a media which is simply added to an existing softener. ProSelect Tannin will sit on top of the existing softening bed to protect it and remove organic (heme) iron as well. ProSelect Tannin is iron resistant, regenerates with salt, and is the resin of choice for heme iron applications.

APPLICATIONS:
•	Remove Naturally Occurring Organics
•	Remove Tannin
•	Remove Organic Color

PRESSURE DROP — The graph above shows the expected pressure loss per foot of bed depth as a function of flow rate at various temperatures.

BACKWASH — After each cycle the resin bed should be backwashed at a rate that expands the bed 25 to 50 percent. The graph above shows the expansion characteristics as a function of flow rate at various temperatures.

CAPACITY — The graph above is based on 2 gpm/cu.ft. flow rate, pH near neutral, and 36 inch minimum bed depth. Capacity is for TOC plus sulfate. No engineering downgrade has been applied.

ADDITIONAL INFORMATION:
SWT Ion Exchange Resin Guide
Iron Removal Comparison Chart

ProSelect™ is a trademark of Safe Water Technologies, Inc.

	Features:
	•	Complies with USDA & FDA regulations (paragraph 21 CFR173.25) for potable water applications *
	•	Reversible exchange of organics
	•	Superior physical stability
	•	Certified to NSF/ANSI Standard 61

*	Prior to first use for potable water, resin should be backwashed for a minimum of 20 minutes, followed by 10 bed volumes of downflow rinse.

er20001 proselect tannin & Organic removal

PHYSICAL PROPERTIES
Part Number	ER20001
Polymer Structure	Styrene/DVB
Functional Group	Trimethylamine
Physical Form	Spherical beads
Resin Color	Amber
Ionic Form (as shipped)	Chloride
Total Capacity Chloride Form	0.65 meq/mL minimum
Water Retention Chloride Form	70 to 80%
Screen Size Distribution	20 to 50 (U.S. mesh)
Fines Content (<50 mesh)	1% maximum
Sphericity	93% minimum
Uniformity Coefficient	1.6 approximate
Approx. Ship. Wt.	41 lb/cu.ft.

SUGGESTED OPERATING CONDITIONS
Max Continuous Temperature Chloride Form	170°F (77°C
Minimum Bed Depth	24 inches
Pressure Loss (See graph left)	20 psi maximum
Backwash Rate (See graph left)	25 to 50%
Operating pH Range	4 to 10 SU
Regenerant Concentration † Salt Cycle Optional Hydroxide Addition	5 to 10% NaCl 0.1 to 0.5% NaOH
Regenerant Level	10 lbs/cu.ft. minimum
Regenerant Flow Rate	0.1 to 0.5 gpm/cu.ft.
Regenerant Contact Time	60 minutes minimum
Displacement Flow Rate	Same as Dilution Flow
Displacement Volume	10 to 15 gal/cu.ft.
Rinse Flow Rate	Same as Service Flow
Rinse Volume	35 to 60 gal/cu.ft.
Service Flow Rate Average Flow Peak Flow	1 to 2 gpm/cu.ft. 7 gpm/cu.ft. maximum

NOTE: Physical properties can be certified on a per lot basis, available upon request.

† CAUTION: DO NOT MIX ION EXCHANGE RESINS WITH STRONG OXIDIZING AGENTS. Nitric acid and other strong oxidizing agents can cause explosive reactions when mixed with organic materials such as ion exchange resins.

This information has been gathered from standard materials and or test data that is believed to be accurate and reliable. Nothing herein shall be determined to be a warranty or representation expressed or implied with respect to the use of such information or the use of the goods described for any particular purpose alone or in combination with other goods or processes, or that their use does not conflict with existing patent rights. No license is granted to practice any patented invention. It is solely for your consideration, investigation and verification.

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Safe Water Technologies, Inc. 996 Bluff City Boulevard Elgin, IL 60120 USA
	tele: +1.847.888.6900 fax: +1.847.888.6924 email: info@swtwater.com https://www.swtwater.com Last Updated: January 26, 2026