ARIES FilterWorks, a division of ResinTech, Inc. * 160 Cooper Road * West Berlin, NJ 08091
Phone: (856) 768-9600 * Fax: (856) 768-9601 * www.arieswater.com
2.0 GLOSSARY of TERMS
The following terms are used throughout this text. Please take a few moments to familiarize yourself with them
so that the information and instructions within are clear.
TERM
DESCRIPTION
LED
Light Emitting Diode, is a semiconductor indicating device used for the status indicators
on the operator control panel of this unit.
LCD
Liquid Crystal Display, is a semiconductive display device used in the operator
control panel of this unit.
TOC
Total Organic Carbon. The identification of organic carbon in water is helpful to
assure successful water system operation. Trace organic chemicals can interfere
with highly sensitive reactions and alter biological processes.
TDS
Total Dissolved Solids conduct electricity. This conductivity allows you to measure the
concentration of salts directly in parts per million (ppm). Higher TDS increases the load on
the deionizing cartridges.
SDI
Silt Density Index, is a scale for determining the amount of suspended solids in water that
exceed 0.45 microns in size. A regulated flow is passed through a 0.45 membrane and
the flow, time, and pressures are plotted to arrive at the index number. Higher SDI
numbers result in premature fouling of resin and filters.
HPC
Heterotrophic Plate Count, formerly known as the standard plate count, is a
procedure for estimating the number of live heterotrophic bacteria in water and
measuring changes during water treatment and distribution.