Union, Column Coupler, universal fit 0.18 mm through hole 0.007 inch ID tubing. Color coded yellow. PEEK. ARE-Applied Research brand. 1 EA.
Additional Info:
The 47450‑02 Column Union is a precision HPLC column coupler designed to reliably connect two HPLC columns or a guard column and analytical column in series while maintaining low dead volume and consistent flow geometry. It is optimized for 0.007 in (0.18 mm) ID tubing, a common internal diameter for analytical‑scale HPLC methods.
The fluid path is entirely PEEK, manufactured from Ultra‑T™ PEEK tubing, providing excellent concentricity, chemical resistance, and pressure stability. This construction helps preserve chromatographic efficiency by minimizing dispersion at the column‑to‑column connection.
A yellow polypropylene sleeve color‑codes the internal diameter, allowing fast visual confirmation during installation, method setup, or maintenance—an important UX feature in multi‑method laboratory environments.
Key Features
Precision Column‑to‑Column Connection
Joins analytical columns in series
Ideal for guard column → analytical column setups
Universal fit simplifies method changes and column swaps
Low Dead Volume Performance
0.007 in (0.18 mm) through‑hole matched to analytical tubing
Minimizes extra‑column volume and band broadening
Supports high‑efficiency separations
All‑PEEK Flow Path
Constructed entirely of PEEK (polyether ether ketone)
Uses Ultra‑T™ tubing for improved concentricity
Metal‑free design avoids corrosion and analyte interaction
Compatible with a wide range of mobile phases
Color‑Coded Identification
Yellow polypropylene sleeve indicates 0.007 in ID
Reduces setup errors and speeds installation
Improves organization and workflow clarity
Why Use a Dedicated Column Coupler?
Improper column connections can introduce dead volume, degrade peak shape, and reduce reproducibility. The 47450‑02 column union provides a controlled, low‑volume connection that helps maintain resolution and system performance—especially important in gradient HPLC and LC‑MS workflows.
Typical Applications
Connecting guard columns to analytical columns
Series coupling of two HPLC columns
Method development and column switching
Analytical HPLC and UHPLC systems
Metal‑free chromatography workflows