HESON HS-TH-3500 Carbon Black Content Analyzer

Overview

The HESON HS-TH-3500 Carbon Black Content Analyzer is a dedicated thermal gravimetric instrument engineered for precise quantification of carbon black content in polyolefin-based polymers—including polyethylene (PE), polypropylene (PP), and polybutene (PB). It operates on the principle of controlled pyrolysis under inert atmosphere followed by oxidative combustion, enabling accurate mass-loss-based determination of carbon black concentration via ASTM D1603-94, ISO 6964, and GB/T 13021–2023 compliant protocols. The system integrates a programmable high-temperature furnace with dual-atmosphere gas switching (N₂ → O₂), ensuring reproducible decomposition of organic matrix and complete oxidation of residual carbonaceous residue. Designed specifically for QC laboratories in rubber, plastic, cable, and pipe manufacturing sectors, the HS-TH-3500 delivers traceable, GLP-aligned results without reliance on solvent extraction or spectroscopic calibration.

Key Features

• Intelligent programmable temperature control with up to 30 customizable heating segments—each defining ramp rate, target temperature, hold duration, and atmosphere sequence
• 7-inch capacitive touchscreen interface supporting real-time display of setpoint vs. actual temperature, elapsed time, segment progress, and thermal profile status
• Optimized furnace architecture featuring 200 mm heating zone and 100 mm uniformity-controlled isothermal region (±2 °C at 900 °C), with maximum operating temperature of 1100 °C and rated power of 3 kW
• Front-access swing-type furnace door facilitating rapid sample loading/unloading and visual confirmation of crucible positioning within the quartz tube (ID Ø40 × 750 mm)
• Dual-gas manifold with precision mass flow controllers for independent regulation of nitrogen (O₂ < 0.5% v/v) and synthetic air, ensuring strict compliance with IEC 60811-4-1 and GB/T 2951.41–2008 purge requirements
• Integrated thermal stability safeguards including over-temperature cut-off, cooling delay logic, and automatic fault logging for audit-ready operation

Sample Compatibility & Compliance

The HS-TH-3500 is validated for use with solid granular or pelletized polyolefin samples weighing 1.0 ± 0.1 g per test. It supports standardized test methods across global regulatory frameworks: ISO 6964 (rubber and plastics), GB/T 13021–2023 (polyolefin pipes and fittings), GB/T 2951.41–2008 (cable insulation materials), ASTM D1603–94 (carbon black in PE), and JTG E50 T1165 (geosynthetic membranes). All operational parameters—including purge gas purity, flow rate (typically 100–200 mL/min), heating rate (e.g., 20 K/min from 100 °C to 950 °C), and oxidation dwell time—are fully configurable to meet method-specific validation criteria. The instrument’s hardware and firmware architecture supports 21 CFR Part 11–ready data integrity when paired with optional secure software modules.

Software & Data Management

While the base unit operates via embedded firmware with local touchscreen control, optional PC-connected software enables full method storage, automated report generation (PDF/CSV), and electronic signature support. Raw thermal curves, mass loss timelines, and final carbon black % calculations are timestamped and logged with operator ID, sample ID, and environmental metadata. Audit trails record all parameter modifications, start/stop events, and calibration actions—ensuring alignment with GLP and GMP documentation standards. Data export conforms to ASTM E1447 and ISO/IEC 17025 traceability requirements.

Applications

• Quality control of carbon black loading in HDPE/LLDPE geomembranes and pressure pipes
• Verification of pigment dispersion consistency in automotive interior trim compounds
• Regulatory testing of flame-retardant cable sheaths per IEC 60811 series
• Batch release testing for medical-grade polyolefin tubing per USP extractables guidance
• Research-grade thermal stability profiling of carbon-black-reinforced TPOs and TPVs

FAQ

What sample preparation is required prior to analysis?
Samples must be dried to constant weight and homogenized; granules or pellets are weighed directly into pre-ashed ceramic or quartz combustion boats (1.0 ± 0.1 g). No solvent dissolution or grinding is necessary.
Does the instrument include gas delivery hardware?
The HS-TH-3500 includes integrated solenoid valves and gas line connectors but requires external N₂ and compressed air (or O₂) sources with appropriate regulators and filters—gas cylinders and purification systems are user-supplied.
Can the system be validated for ISO/IEC 17025 accreditation?
Yes—full IQ/OQ documentation packages, certified reference materials (CRM) compatibility, and uncertainty budget templates are available upon request to support laboratory accreditation workflows.
Is furnace temperature uniformity verified during factory calibration?
Each unit undergoes multi-point thermal mapping across the 100 mm isothermal zone at 500 °C, 800 °C, and 1000 °C, with deviation reports included in the Certificate of Conformance.
How is data integrity ensured during long-duration tests?
Non-volatile memory retains all run data even during unexpected power interruption; resumed operation restores previous state without data loss or interpolation artifacts.