5320 ELCD | Electrolytic Conductivity Detector

The Model 5320 is our third-generation Electrolytic Conductivity Detector. It combines three key components: a reactor assembly, cell-solvent assembly, and detector controller. Its principal mode of operation is the halogen mode (X), but sulfur (S) and nitrogen (N) modes are also available. Each detection mode kit contains all of the required materials (except the solvent) to operate the ELCD in a specified mode.

The Electrolytic Conductivity Detector is designed for high sensitivity measurement of halogenated compounds. Interfacing an ELCD with a PID as tandem detectors are prescribed in USEPA methods 502.2 and 8021 for the measurement of chlorinated and aromatic volatile organic compounds (VOCs) in drinking water and wastewater samples. 

The ELCD converts halogen compounds eluting from a GC column to an ionizable gas (HX) using reductive conditions in a high-temperature catalytic microreactor. Gaseous reaction products carried into the detector cell become dissolved in a deionized solvent, which increases the electrolytic conductivity of the mixture. The detector amplifies this instantaneous change in conductivity, producing a signal proportional to the mass of halogen in the original compound.

Electrolytic Conductivity Detector Capabilities:

• Quick-change reactor design, disposable resin cartridge, and reliable solvent system
• Analog-controlled reactor temperature and solvent flow
• Detector base optimized for capillary columns
• Solvent venting using GC timed-event relay
• Direct interface with most GC makes and models
• Direct interface to the OI Analytical Model 4430 PID without a transfer line; tandem design occupies only one detector port

Principal Applications:

• USEPA Methods (502.1, 502.2, 601, 608, 611, 8010, 8021)
• VOCs • Pesticides • Halogenated Compounds
• QA/QC • Petroleum Products
• Process Control, Testing, and Analysis
• Fluorinated and Chlorinated Contaminants in Process Streams