Union, Column Coupler, universal fit 0.25mm through Hole 0.010 inch ID tubing. Color coded blue. PEEK. ARE-Applied Research brand. 1 EA.
Additional Info:
The 47450‑03 Column Union is a precision HPLC column coupler designed to connect two HPLC columns or a guard column and analytical column in series while maintaining consistent internal geometry and low dead volume. This configuration is optimized for 0.010 in (0.25 mm) ID tubing, making it well suited for higher‑flow analytical methods or applications using larger‑ID column configurations.
The entire fluid path is PEEK, manufactured from Ultra‑T™ PEEK tubing to ensure excellent concentricity, chemical resistance, and mechanical stability. This construction helps preserve chromatographic efficiency and minimizes dispersion at the column‑to‑column interface.
A blue polypropylene sleeve color‑codes the internal diameter, allowing fast visual identification during installation, method setup, and troubleshooting—an important UX feature in multi‑ID chromatography environments.
Key Features
Precision Column‑to‑Column Connection
Joins two analytical HPLC columns
Ideal for guard column → analytical column configurations
Universal‑fit design simplifies system reconfiguration
Low Dead Volume Performance
0.010 in (0.25 mm) through‑hole matched to larger‑ID tubing
Reduces extra‑column effects at higher flow rates
Supports consistent peak shape and reproducibility
All‑PEEK Flow Path
Constructed entirely from PEEK (polyether ether ketone)
Uses Ultra‑T™ tubing for improved concentricity
Metal‑free design avoids corrosion and analyte interaction
Compatible with a broad range of mobile phases
Color‑Coded Identification
Blue polypropylene sleeve identifies 0.010 in ID
Minimizes installation errors
Improves organization in labs using multiple tubing sizes
Why Use a Dedicated Column Coupler?
Proper column connections are critical to chromatographic performance. Using a correctly sized, low‑volume union helps avoid unnecessary band broadening, pressure disturbances, and loss of resolution. The 47450‑03 column union provides a controlled, purpose‑built solution for higher‑ID tubing applications, supporting robust and reproducible HPLC workflows.
Typical Applications
Connecting guard columns to analytical columns
Series coupling of two HPLC columns
Higher‑flow analytical HPLC methods
Method development and column switching
Metal‑free chromatography systems