RC 200 & 400
RC 100
RC 200 & 400
RC 100

Refillable Cation Exchange Resin Columns

Part #: 7-00816, 7-04037

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Maintain appropriate conductivity measurement while minimizing costs with Sentry's refillable resin columns. 
The Sentry® RC-100 refillable ion exchange resin column make resin replacement easy and economical, minimizing channeling and achieving a higher resin efficiency than competitive columns with inefficient column diameters.

Each of Sentry's resin columns is designed to ensures plug-free flow and reduces channeling. Coming in a variety of sizes, you will be sure to find the correct column to meet your application. 

  • Each resin column comes with an initial charge of pre-measured color-indicating hydrogen-form cation resin.
  • Optional auto shut-off quick disconnect kit with 1/4-inch ID tube connections available.
  • Corrosion-resistant mounting clamps included with W7901x models.
  • The RC-100 is specially designed to minimize the column's dead volume, assuring highly representative sampling. After a chemical upset, the RC-100 can produce a representative sample within four minutes (at a flow rate of 200 cc/min) while others can take as long as 16 minutes.
  • In addition to reducing dead volumn, the RC-100 refillable ion exchange column's design also produces better flow distribution. Poor flow distribution and velocity can skew cation conductivity results by up to 0.1 µS/cm
  • The RC-101 uses the same design but is made of PETG which is resistamt tp high levels of residual ammonia present in the sample or in the atmosphere near the column.
  • The refillable, clear plastic column makes resin replacement economical and easy
  • PETG columns are available for applications where chemical attacks may occur
  • Provides optimum fluid velocity with increased resin efficiency
  • Designed especially for flow rates common to water chemistry analyzers
  • Minimizes lag time required to detect chemical upset
  • No PVC used; wetted materials will not leach chlorides or plasticizers
  • End fittings are 1/8-inch quick disconnects

Model Resin Volume Cation Capacity Flow
RC-100 & 101 565 cc 800 Grains 200 ccm
RC-200 1130 cc 1600 Grains 200 ccm
RC-400 2260 cc 3200 Grains 200 ccm

Part Numbers
RC-100 resin columns with initial change of resin, mounting brackets, and two sets of quick disconnects 7-00816B
RC-101 resin column with initial change of resin, mounting brackets, and two sets of quick disconnects 7-00816N
Cation resin refill bag 2-03972A
Corrosion-proof quick disconnect mounting bracket 4-04869A
Porous Disk 2-03892A
O-ring seal 4-04820C
Acetal barbed quick disconnects (includes two each make and female coupling) 6-02503B

Related Resources

Learn more about how Refillable Resin Columns can benefit your application with the following resources. 

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W7950 Degassing Sparger

Ensure your degassed cation conductivity accuracy with the W7950 Degassing Sparger from Sentry Equipment. The sparger eases sample conditioning, removing impurities and potential hot spots.

Reliable Equipment Trusted Across Industries

Sentry Equipment has been committed to ensuring that processes meet our client’s specifications and worker safety for almost 100 years. Over that time, our ability to listen and adapt to the unique needs of each of our clients has helped us to create innovative solutions and improve the quality of our equipment long-term. Our expertise has grown over the years and continues to grow as our team seeks out and faces new challenges. Top industries that Sentry has worked in include:

  • Oil & Gas
  • Power Generation
  • Liquid & Slurry
  • Bulk Solids
  • Coolant Recycling & Oil Separation
  • Water & Wastewater
  • Nuclear
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