The Sentry RC refillable ion exchange resin columns make resin replacement easy and economical, minimizing channeling and achieving a higher resin efficiency than competitive columns with inefficient column diameters. Three models (RC-100, RC-101, RC-200 and RC-400) meet your specific requirements, withstanding the demands of power plants. Column(s) provide optimum fluid velocity with increased resin efficiency.

Color-changing resin gives quick visual indication of resin depletion level. Twist-off cap for easy resin refill with available pre-sized Sentry resin refill packets. No PVC; wetted materials will not leach chlorides or plasticizers.

RC-100 & RC-101

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 volume, 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 resistant to high levels of residual ammonia present in the sample or in the atmosphere near the column.

RC-200 & RC-400

The RC-200 and RC-400 refillable ion exchange resin columns are designed to minimize the column’s dead volume, assuring highly representative sampling, and meet the demands of special applications, such as the need for large volumes of resin to extend the time between resin replacement or regeneration.

The resin columns have removable caps at both ends of the column to assist in refilling or regeneration of the resin. Additionally, porous discs are installed at both ends to contain the resin, assist in flow distribution and reduce channeling

Benefits

• Refillable, clear plastic column makes resin replacement economical and easy
• 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

PART NUMBERS
RC-200 resin column with initial change of resin, mounting brackets, and two sets of quick disconnects 7-04037A Sentry 

RC-400 resin column with initial change of resin, mounting brackets, and two sets of quick disconnects 7-04037B Sentry 
cation resin refill bag (0.022 ft3) 2-03972A Sentry 
(2 required) 2-03972A SENTRY 
(4 required)
corrosion-proof quick disconnect mounting bracket 4-05263A Sentry 

standard cap 2-07030C Sentry 
kit (includes two each O-rings and porous disks) 6-02503D Sentry