LPG Analyzer (ASTM D2163)

High-Precision Gas Chromatographic Solution for Liquefied Petroleum Gas (LPG) Composition Analysis

Overview

Liquefied Petroleum Gas (LPG) is a critical hydrocarbon mixture used in domestic, automotive, and industrial applications. Accurate determination of its composition and impurities is essential for product quality control, process optimization, and compliance with international fuel standards.

The JAS LPG Analyzer, configured according to ASTM D2163, provides a complete, automated gas chromatographic solution for the analysis of liquefied petroleum gases and their impurities. Designed for precision, reliability, and operational safety, this system ensures accurate quantification of paraffins, olefins, and trace impurities such as butadiene, propadiene, and isobutylene.

Built on the robust Agilent 8890 GC platform and enhanced with JAS modular valve and sampling technology, the analyzer delivers fast, repeatable, and fully compliant results for refinery, petrochemical, and quality control laboratories.

Method Compliance

• ASTM D2163 – Standard Test Method for Determination of Hydrocarbons in Liquefied Petroleum (LP) Gases and Propane/Propene Mixtures by Gas Chromatography
• ISO 7941 / EN 589 – Analysis of LPG Composition and Impurities
• UOP 539 / DIN 51666 – Supplementary Methods for Hydrocarbon and Impurity Determination

System Configuration

The JAS LPG Analyzer is a multi-channel GC system optimized for precise separation of C1–C5 hydrocarbons and unsaturated impurities.

Core Features:

• GC Platform: Agilent 8890 GC
• Detectors:
  • Flame Ionization Detector (FID) for hydrocarbon quantification
• Columns:
  • Combination of Al₂O₃ PLOT columns for optimal hydrocarbon separation
• Valve Configuration:
  • JAS multi-valve ValveBox with automatic stream switching and backflush-to-vent
• Sample Introduction:
  • JAS Vaporizer for controlled and reliable vaporization of liquefied LPG samples — ensuring accurate phase transfer and reproducibility
  • Compatible with LPG sampling valves and liquid-phase sampling systems

Performance Highlights

• Full compositional analysis of LPG (C1–C5 hydrocarbons and unsaturates)
• Quantification of propadiene, butadiene, and isobutylene impurities
• Consistent and accurate vaporization using the JAS Vaporizer
• Repeatable injection performance ensured by GICU precision control
• Backflush-to-vent technology for rapid column cleaning and extended lifetime
• Typical analysis time: <10 minutes
• Fully compliant with ASTM D2163 repeatability and reproducibility criteria
• User-friendly software interface for automated data acquisition and reporting

Software and Reporting

Powered by JAS Report Generator and Agilent OpenLab CDS, the system provides advanced automation and data management:

• Automatic calculation of component concentrations (mol%, vol%, wt%)
• Total composition balance and impurity profiling
• User-defined and customizable report templates
• Optional BTU / Calorific Value calculation module
• Multi-detector synchronization for parallel TCD and FID acquisition
• Export results in Excel, CSV, or LIMS-compatible formats

Options and Accessories

Enhance analytical flexibility and reliability with JAS-engineered accessories:

• JAS Vaporizer: Ensures precise vapor-phase sampling of LPG, preventing composition bias
• Liquid Sampling Valve (LSV): Enables direct sampling of pressurized LPG liquids
• JAS ValveBox: Compact modular valve oven with heated valves and micro-packed columns
• Extended Column Configuration: Optional setup for enhanced C6+ or unsaturated hydrocarbon separation
• JAS Report Generator Software: Optional module for BTU and Wobbe Index calculations
• 4-Port Valve Option: Can be added for venting high-methane samples or specialized applications

Why Choose JAS LPG Analyzer (ASTM D2163)

• Fully compliant with ASTM D2163 and international standards
• Fast, reliable, and precise LPG composition analysis
• Integrated JAS Vaporizer ensures accurate sampling of liquefied gases
• Modular configuration customizable for refinery or QC applications
• Built on Agilent GC technology with JAS engineering expertise
• Supported globally by JAS technical and application specialists

Applications

• LPG quality control and certification
• Refinery and gas plant product analysis
• Petrochemical feedstock composition testing
• Propane/propene and butane/butene mixture analysis
• On-site and central laboratory operations

JAS LPG Analyzer (ASTM D2163) — Delivering accuracy, reliability, and safety for comprehensive LPG composition and impurity analysis.