Union, Column Coupler, universal fit 0.50 mm through hole 0.020 inch (0.50 mm) ID tubing. Color coded orange. PEEK. ARE-Applied Research brand. 1 EA.
Additional Info:
The 47450‑04 Column Union is a precision HPLC column coupler engineered for applications using larger‑ID tubing and higher analytical flow rates. It provides a controlled, low‑dead‑volume connection between two HPLC columns or between a guard column and an analytical column, helping preserve chromatographic performance in higher‑flow methods.
The internal fluid path is manufactured entirely from Ultra‑T™ PEEK tubing, selected for excellent concentricity, chemical resistance, and pressure stability. This design minimizes disruption at the column‑to‑column interface and supports reproducible separations across a wide range of mobile phases.
A color‑coded orange polypropylene sleeve identifies the 0.020 in (0.50 mm) internal diameter, enabling rapid visual confirmation during system setup, method changes, or troubleshooting—particularly useful in laboratories that support multiple tubing sizes.
Key Features
Precision Column‑to‑Column Connection
Joins two HPLC columns in series
Ideal for guard column → analytical column configurations
Universal‑fit design simplifies system reconfiguration
Optimized for Larger‑ID Tubing
0.020 in (0.50 mm) through‑hole matched to higher‑flow tubing
Helps reduce extra‑column effects at elevated flow rates
Supports robust, reproducible analytical methods
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
Broad solvent and pH compatibility
Color‑Coded Identification
Orange polypropylene sleeve identifies 0.020 in ID
Reduces setup errors and speeds installation
Improves organization in multi‑method chromatography labs
Why Use a Properly Sized Column Coupler?
Selecting a column union with an internal diameter matched to your tubing is critical—especially at higher flow rates. Undersized or mismatched couplers can introduce pressure artifacts and band broadening. The 47450‑04 column union provides a purpose‑built solution for larger‑ID tubing applications, helping maintain consistent flow and peak integrity.
Typical Applications
Guard column to analytical column connections
Series coupling of two analytical HPLC columns
Higher‑flow HPLC methods
Method development and column switching
Metal‑free chromatography systems