Gas Chromatograph for Packaging Solvent Residue GC-05/GC-06

In the printing and lamination processes for food and pharmaceutical packaging films, organic solvents such as toluene and ethyl acetate are widely used. If these solvents are not thoroughly evaporated, residual solvent can migrate into the packaged contents, directly impacting consumer health. As a result, with the continuous evolution of international regulations—including ISO 15320, ASTM F1307, and the upcoming USP <467> (as well as similar pharmacopoeia guidelines in various regions)—solvent residue testing has become an indispensable quality checkpoint for the packaging industry. The core instrument for this testing is the Gas Chromatograph (GC).

In this field, Guangzhou Sonuo Scientific Instrument Co., Ltd. has been deeply engaged for many years. Its two flagship models, the GC-05E and GC-06E, have gained wide application across packaging, food, pharmaceutical, and printing industries globally. While both belong to the GC family, they are positioned differently—let’s start with the GC-05E.

GC-05E: Professional Benchmark – The “Workhorse” for Flexible Packaging Testing

The GC-05E is a professional-grade gas chromatograph tailored for the flexible packaging industry, combining high performance with practicality. It is the first choice for most packaging enterprises.

Core Mission: Precisely detect total solvent residue in printed packaging materials, and accurately analyze the purity and composition of various solvents.

What Substances Can It Detect?

The instrument efficiently separates and detects the main solvent types involved in flexible packaging printing, including: benzene, cyclohexanone, xylene, ethanol, ethylbenzene, isopropanol, propanol, butanol, ethyl acetate, isopropyl acetate, n-butanol, toluene, n-butyl acetate, aniline, 4-methyl-2-pentanone, and more.

Why Is It an Industry Benchmark?

• Smart Interaction: Equipped with a 7‑inch color touchscreen and a next‑gen intelligent OS, offering a smartphone‑like intuitive interface with clear logic.
• Precise Temperature Control: Column oven temperature range from ambient+5°C to 300°C, with control accuracy of 0.1°C. Programmed ramp rates from 0.1 to 25°C/min. An automatic post‑door cooling system enables rapid heating/cooling—from 300°C down to 70°C in under 9 minutes.
• Ultra‑High Sensitivity: FID detection limit of Mt ≤ 1×10⁻¹³ g/s—meaning even trace amounts of solvent residue are accurately measured.
• Flexible Expandability: Compatible with packed column injectors, capillary column injectors, auto‑liquid samplers, gas valve injection, nickel converters, thermal desorption, headspace auto‑samplers, pyrolysis injectors, and more.
• Quiet & Comfortable: Advanced noise‑suppression system virtually eliminates fan noise during operation, creating a pleasant work environment.
• Safe & Reliable: Built‑in self‑diagnosis function that displays fault location and nature at any time; over‑temperature protection stops heating and alarms if any zone exceeds set temperature.
• International Compliance: Fully complies with major global standards including ISO 15320, ASTM F1307, and USP <467> (as well as regional equivalents for packaging materials).

Key Specifications:

In a nutshell: The GC-05E is a complete, reliable, and user‑friendly solvent residue testing solution—ready to go, from hardware to software.

GC-06E: Advanced Technology – For Those Pursuing Ultimate Performance

If your testing requirements are more diverse and you demand higher temperature precision and greater expandability, the GC‑06E is the upgrade choice.

Same Core Mission: Detect solvent residue in packaging prints and analyze solvent purity/content—covering the same list of compounds as the GC‑05E.

Where Does the GC‑06E Excel?

• Wider Temperature Range: Ambient+4°C to 450°C, increment 0.5°C, accuracy ±0.1°C—enabling more complex analytical tasks.
• More Temperature Zones: 8 fully independent temperature control outputs, with up to 16‑stage programmed temperature ramping.
• More Detector Options: Optional FID, TCD, ECD, FPD, and NDP detectors; multiple detectors can be installed simultaneously. FID features auto‑ignition.
• Full EPC (Electronic Pneumatic Control): Supports constant‑flow and constant‑pressure modes, with control accuracy of 0.01 psi for pressure and 0.01 mL/min for flow.
• Enhanced Data Processing: Dedicated workstation can simultaneously support multiple GC units, enabling data processing and instrument reverse control. Built‑in low‑noise, high‑resolution 24‑bit AD circuitry, with baseline storage and subtraction functions.
• Industrial Connectivity: Fully independent proprietary GC microcomputer system with MODBUS/TCP standard protocol (optional) for DCS system integration.
• Faster Ramp Rates: Programmed ramp rate up to 0.1‑80°C/min (high‑speed version).

Key Specifications:

In a nutshell: The GC‑06E is the ideal choice for users who demand ultimate temperature precision, multi‑detector expandability, and industrial connectivity.

The "Golden Partner" for GC: Headspace Sampler

To complete solvent residue testing, a GC must be paired with a headspace sampler.

Sonuo’s SN‑DK series Headspace Sampler is the perfect match. Its principle is simple: place the sample in a sealed headspace vial and heat it, allowing volatile solvents to vaporize; then extract the headspace gas and inject it directly into the GC for analysis. The entire process requires no complex sample preparation—simple, fully automated, and highly efficient.

Key Specifications:

• Sample heating range: 40°C ~ 200°C (customizable to 250°C)
• Simultaneous heating for 10 or 12 vials
• Quantitative repeatability (RSD) ≤ 1.5%

With the headspace sampler, solvent residue testing becomes fully automated and highly productive.

Which One Should You Choose? A Quick Comparison

From the professional reliability of the GC‑05E to the ultimate performance of the GC‑06E—Sonuo’s GC series offers a complete product range for the flexible packaging industry, from entry‑level professional to flagship grade. Whether you are a food packaging, pharmaceutical packaging, or printing enterprise, there is a Sonuo GC that fits your needs.

Choosing the right testing instrument is not just about meeting regulatory checks—it is a commitment to consumer health and product safety worldwide.