Specifications

23G-Series RO System
3024270 Rev G 109 14Oct13
8.5 Conductivity Calibration Procedure
8.5.1 Measuring the Conductivity of Feed and Permeate Samples
NOTE:
The 23G displays conductivity in microSiemens (S).
NOTE:
Use a hand-held, recently calibrated conductivity meter. The meter should
read in microSiemens (S).
NOTE:
Some hand-held meters are not temperature compensated and, therefore
only accurate at 77°F (25°C).
1. Take a sample of the feedwater [about 8 ounces (0.24 L)] from
the feed sample port on the inlet of the machine. Measure the
conductivity with a recently calibrated conductivity meter.
2. Take a sample of the permeate [about 8 ounces (0.24 L)] from
the permeate sample port on the machine. Measure the
conductivity with a recently calibrated conductivity meter.
Be sure to rinse the conductivity meter thoroughly in a stream of
water from the feed sample valve before taking feed sample
reading and permeate sample reading. Follow the manufacturer’s
instructions for calibrating with a conductivity meter.
8.5.2 Verifying the Percent Rejection Reading on the ECM-100
Calculate the ECM-100 percent rejection using the following
equation:
% Rejection =
1-
Permeate Conductivity
x 100
Feed Conductivity
If the percent rejection reading is inaccurate, the feed or permeate
conductivity probes may need to be calibrated.