LabCompanion SH-60 Salt Spray Test Chamber

Overview

The LabCompanion SH-60 Salt Spray Test Chamber is an engineered environmental test system designed for standardized accelerated corrosion testing of metallic and coated components. It operates on the principle of continuous or cyclic salt fog generation under controlled thermal and humidity conditions, simulating aggressive atmospheric corrosion environments in accordance with internationally recognized test protocols. The chamber utilizes compressed air atomization—guided by Bernoulli’s principle—to produce a stable, uniformly dispersed sodium chloride aerosol that settles gravitationally onto test specimens at a reproducible rate. This method enables quantitative assessment of protective coating integrity, electroplating quality, passivation efficacy, and rust-inhibiting oil performance across industrial sectors including automotive, aerospace, electronics, marine hardware, and fastener manufacturing.

Key Features

• Robust Chamber Construction: Inner chamber fabricated from 8 mm thick PVC board with integrated circumferential reinforcement bands, ensuring dimensional stability, chemical resistance to acidic chloride mists, and zero warpage over extended operational cycles.
• Precision Thermal Regulation: Dual independent PID + PWM + SSR control loops govern both test chamber temperature (±0.3 °C accuracy) and saturated air tank temperature, minimizing thermal drift and enabling strict adherence to ASTM B117 and ISO 9227 setpoints (35 °C ± 1 °C for Neutral Salt Spray; 50 °C ± 1 °C for Copper-Accelerated Acetic Acid Salt Spray).
• Controlled Fog Generation: Optimized nozzle geometry and air-pressure calibration deliver consistent salt deposition rates between 1.0–2.0 mL per 80 cm² per hour, with inter-test variation maintained within ±0.3–0.9 mL/80 cm²·h via calibrated collection funnels and real-time monitoring.
• Intelligent Fault Detection: Modular LED status indicators provide immediate visual diagnostics for heater failure, water level depletion, temperature excursion, or compressor interruption—enabling rapid troubleshooting without system shutdown.
• Operator-Centric Safety Design: Fully flush-mounted exterior housing eliminates protruding edges; dual redundant safety systems (EGO thermal cutoff + PT100 sensor) protect against overheating in the test chamber; transparent acrylic lid incorporates rapid demisting functionality post-test.
• Flexible Water Management: Front-access modular drainage system separates reservoirs (solution tank, saturated air tank, overflow pan), reducing cross-contamination risk and simplifying maintenance. Manual/auto water fill options ensure uninterrupted operation during municipal supply interruptions.

Sample Compatibility & Compliance

The SH-60 accommodates flat, angular, or irregularly shaped specimens up to 450 × 600 × 400 mm (W × D × H), mounted on adjustable PVC or non-corrosive polymer racks. It supports standard test specimen orientation per ASTM B117 (15°–30° from vertical) and ISO 9227 (20° ± 5°). All internal wetted surfaces are inert to 5 wt% NaCl solution, preventing secondary contamination. The system meets essential requirements for GLP-compliant laboratories: traceable temperature calibration (NIST-traceable reference sensors), audit-ready operational logs (via optional RS-232/485 interface), and mechanical interlocks that halt spray generation during lid opening. Regulatory alignment includes full compatibility with ASTM B117, ISO 9227, JIS Z2243, DIN 50021, and CNS 12217—ensuring data acceptance in global supplier qualification programs and third-party certification audits.

Software & Data Management

While the SH-60 features a standalone digital controller with intuitive keypad-based parameter entry (time: 0–9999 h/m/s; temp: 0.1 °C resolution), it supports integration into centralized lab management systems via optional serial communication modules. Logged parameters—including chamber temperature, saturated tank temperature, elapsed test time, and fault event timestamps—are exportable as CSV files for trend analysis and regulatory documentation. When paired with LabCompanion’s optional PC-based DataLogger Suite (sold separately), users gain automated report generation compliant with FDA 21 CFR Part 11 requirements—including electronic signatures, audit trails, and user-access-level permissions—facilitating GMP-aligned validation protocols and ISO/IEC 17025 accreditation readiness.

Applications

• Evaluation of electrogalvanized, zinc-nickel, and cadmium plating adhesion and porosity on steel substrates
• Validation of epoxy, polyester, and polyurethane powder coating performance on aluminum extrusions
• Corrosion resistance benchmarking of stainless steel grades (e.g., 304 vs. 316) under chloride-laden environments
• Quality assurance of anti-rust oils applied to machined cast iron components prior to packaging
• Accelerated aging studies for automotive brake calipers, suspension arms, and fasteners exposed to road de-icing salts
• Supplier qualification testing per OEM specifications (e.g., Ford WSK-M2G224-A2, GMW14872, VW PV1210)

FAQ

What standards does the SH-60 comply with?
It fully supports ASTM B117, ISO 9227, JIS Z2243, DIN 50021, and CNS 12217 test methodologies, including precise control of temperature, pH (6.5–7.2 for NSS), and salt deposition rate.
Can the SH-60 perform cyclic corrosion testing (CCT)?
Yes—the controller allows programmable alternation between salt spray, drying, and humidification phases when configured with optional humidity control and compressed air drying modules.
Is the chamber material resistant to long-term exposure to 5% NaCl solution?
Yes—PVC construction (8 mm thickness) and SUS#304 saturated air tank provide proven chemical inertness and structural longevity under continuous saline fog conditions.
How is salt solution concentration verified during operation?
Users verify concentration using conductivity meters or refractometers; the system includes calibrated collection funnels and standard measuring cylinders (supplied) for deposition rate validation per ASTM B117 Annex A1.
What electrical supply is required for the SH-60 model?
Standard configuration uses 220 V / 50 Hz single-phase power (1.5 kW); 380 V / 50 Hz three-phase is available upon request for higher-capacity models.