STANDARD RESIN ANALYSIS

MECO LABORATORY

ION EXCHANGE RESIN TESTING

STRONG ACID CATION:

• Total Capacity
• Moisture Holding Capacity
• Iron Fouling
• Whole Bead Count
• Picture of Resin
• Comments

WEAK ACID CATION:

• Total Capacity
• Moisture Holding Capacity
• Iron Fouling
• Whole Bead Count
• Picture of Resin
• Comments

STRONG BASE ANION:

• Total and Salt Splitting Capacity
• Moisture Holding Capacity
• Iron fouling
• Whole Bead Count
• Picture of Resin
• Comments

ACRYLIC STRONG BASE ANION:

• Total Dry and Wet Capacity
• Dry Strong and Weak Base Capacity
• Moisture Holding Capacity
• Iron fouling
• Whole Bead Count
• Picture of Resin
• Comments

WEAK BASE ANION:

• Total Free Base Capacity
• Moisture Holding Capacity
• Iron Fouling
• Organic Fouling
• Rinse Requirements
• Whole Bead Count
• Picture of Resin
• Comments

MIXED BED:

• Ease of Separation
• Cleanliness of Backwash
• Test listed for Resin in Mixed Bed (Strong Acid, Strong Base, etc.)

ADDITIONAL TESTS:

• Percent Regeneration
• Wet Screen Analysis
• Mixed Bed Composition (Measure of Cross Contamination)

ION EXCHANGE RESIN TESTS DESCRIPTION

BACKWASH:

This test is performed according to MECO Method 2001 and is part of the resin pretreatment to classify the resin and to observe the effluent for debris and/or suspended solid content of the resin sample.

MOISTURE HOLDING CAPACITY, MHC:

Also referred to as water retention capacity, WRC: This test is performed according to MECO Method 2002 and it covers the determination of the amount of water retained by ion-exchange resins. The water retention capacity, expressed as percent moisture, of the resin is proportional to its pore volume. Increases in water retention capacity of used material as compared with the values for new material serve as an indicator of polymer decrosslinking; decreases may indicate either loss of functionality or fouling of the resin. The numeric value is directly dependent on the ionic form of the resin and will be noted as to what ionic form the resin is in for comparison to new resins. The resin will be considered having high capacity if the moisture is greater than 3% of the typical range indicated for new resin.

EXCHANGE CAPACITY:

This test is performed according to MECO Method 3000 and covers the determination of the available sites the resin has for ion exchange purposes. The resin’s capacity is expressed as milliequivalents per milliliters (volume capacity) of resin or milliequivalents per gram (weight capacity) of resin and is compared to new resin’s typical values. There are two types of capacity we report, TEC (Total Exchange Capacity) and SEC (Salt Splitting Capacity). For strong acid cations, they are the same.

TOTAL ION EXCHANGE CAPACITY (TEC):

The total capacity is a measure of the total number of ionizable groups. For strong base anions, the TEC determines the sum of the exchangeable strong and weak bases anions. For weak base anions, the wet volume capacity determines the total number of milliequivalents of exchangeable hydroxide. For strong acid cations, the TEC determines the total number of milliequivalents of exchangeable hydrogen.

SALT SPLITTING CAPACITY (SEC):

Reported for anion resins only, the SEC is a measurement of the exchangeable strong base anion groups only.

ORGANIC FOULING – ANION RESIN:

This test is performed according to MECO Method 5002.1 and covers a qualitative analysis of organics on anion exchange resin only. This method covers the color throw of a brine solution after it has filtered through an anion resin. The color is then compared to a given Varnish Color Scale.

TOTAL ORGANIC CARBON (TOC) – ANION RESIN:

This test is performed according to MECO Method 5002.2. This method covers the measurement of the total organic carbon concentration extracted from the resin via a brine caustic solution. This measurement is performed by the use of an organic carbon analyzer. Results are reported in mg/L-resin.

IRON FOULING:

This test is performed according to MECO Method 5001 and covers the quantitative determination of iron via Atomic Absorption. Results are expressed in mg/L-resin.

MICROSCOPIC BEAD EXAMINATION:

A sample of the resin is placed under the microscope for determination of the physical integrity of the resin and contamination of the bead. Photographs are taken and included in the report.

ION EXCHANGE RESIN

LABORATORY TESTING PRICE LIST

(Includes Separation and Analysis of Cation and Anion Components)

Additional Testing As Needed:

Please submit a one quart sample properly labeled
with contact, company name, address and complete resin information.

Samples can be expedited for a 20% up charge.

10% Discount for 10 or more samples submitted at one time.

Terms: Net 30 Days