Coil Tube (Imported from UK)

Overview

The Coil Tube is a precision-engineered fluid handling component designed for controlled thermal exchange, sample conditioning, or residence time modulation in analytical and process instrumentation systems. Unlike generic tubing, this coil is manufactured to stringent dimensional tolerances and material specifications suitable for integration into high-integrity laboratory and industrial applications—including HPLC mobile phase pre-conditioning, gas chromatography carrier gas cooling, reactor effluent quenching, and inline viscosity or density measurement loops. Constructed from high-purity 316 stainless steel or fluoropolymer-lined variants (depending on chemical compatibility requirements), the coil exhibits excellent resistance to corrosion, pressure cycling, and thermal fatigue. Its helical geometry provides predictable flow dynamics and enhanced surface-area-to-volume ratio—critical for consistent heat transfer coefficients and minimal hold-up volume. The device operates passively, requiring no power or control interface; its performance is governed by fundamental principles of conductive and convective heat transfer, laminar/turbulent flow regimes (Reynolds number dependent), and material thermal conductivity.

Key Features

• Precision-wound helical geometry ensuring repeatable flow path length and thermal mass
• Available in multiple inner diameters (ID: 0.5 mm to 3.2 mm) and outer diameters (OD: 6 mm to 16 mm) to match system pressure and flow rate requirements
• Standard lengths ranging from 1 m to 10 m, with custom coiling radius and termination options (e.g., Swagelok® 1/4″ compression, VCR®, or zero-dead-volume ferrules)
• Electropolished internal surface finish (Ra ≤ 0.4 µm) to minimize adsorption and support compliance with USP , ISO 10993, and FDA 21 CFR Part 11–aligned data integrity workflows when integrated into validated systems
• Pressure rating up to 400 bar at 25°C (material- and diameter-dependent); fully traceable manufacturing documentation available upon request
• Compatible with standard cleaning protocols including aqueous NaOH, nitric acid passivation, and solvent rinses—validated per ASTM A967 for stainless steel components

Sample Compatibility & Compliance

The Coil Tube supports a broad range of liquid and gaseous media, including aqueous buffers, organic solvents (acetonitrile, methanol, THF), supercritical CO₂, and reactive gases (Cl₂, NH₃, H₂S) — contingent upon selected material grade (e.g., Hastelloy® C-276 for halogenated environments). It is not intended for use with hydrofluoric acid or molten alkali metals. As a passive component, it carries no intrinsic regulatory classification; however, when incorporated into final analytical instruments, it contributes to overall system compliance with ISO/IEC 17025:2017 (for testing laboratories), IEC 61010-1 (safety), and EU Machinery Directive 2006/42/EC. Documentation packages include material test reports (MTRs), dimensional inspection records, and certificates of conformance aligned with EN 10204 Type 3.1.

Software & Data Management

The Coil Tube itself does not incorporate embedded electronics, firmware, or software. However, when deployed within instrument platforms featuring digital control (e.g., modular HPLC systems, automated reaction calorimeters, or PAT-enabled bioreactors), its physical parameters—length, ID, material thermal conductivity, and coil radius—are programmatically referenced in system calibration models and residence time distribution (RTD) calculations. These parameters are stored in the host instrument’s configuration database and may be exported as part of audit trails under FDA 21 CFR Part 11-compliant electronic record systems. Integration with LIMS or ELN platforms occurs indirectly via instrument-generated metadata, supporting GLP and GMP traceability requirements.

Applications

• Mobile phase temperature stabilization in UHPLC and LC-MS systems to reduce retention time drift
• In-line cooling of reactor effluents prior to FTIR or Raman flow cells to preserve spectral fidelity
• Residence time extension for kinetic studies in continuous-flow chemistry setups
• Gas pre-heating or cooling in GC carrier lines to improve detector sensitivity and column efficiency
• Dead-volume minimization in microfluidic interfacing between sampling probes and analytical detectors
• Thermal buffering in pH or conductivity sensor loops to dampen ambient temperature fluctuations

FAQ

Is the Coil Tube supplied with end fittings?
Standard configurations include plain-cut ends; however, Swagelok®, Parker Autoclave, or VCR® fittings can be factory-installed per customer specification.

Can it be sterilized using autoclaving?
316 stainless steel versions withstand standard steam autoclaving (121°C, 15 psi, 20 min); fluoropolymer-lined variants require validation per ISO 17665-1 due to polymer thermal limits.

What is the typical lead time for custom coil geometries?
Standard stock items ship within 3 business days; custom wound coils with non-standard radii or materials require 10–15 working days following engineering review and drawing approval.

Do you provide installation validation support?
Yes—comprehensive IQ/OQ documentation templates, including dimensional verification checklists and pressure test protocols, are available upon request for qualified customers operating under GxP frameworks.