RKI Instruments 3-Gas Mix H2S/CO/O2 Alum 34L – 72-5357RK

RKI Instruments 72-5357RK 3-Gas Mix H2S/CO/O2 34L Aluminum Calibration System

The RKI Instruments 72-5357RK 3-gas mix reference standard utilizes a specialized 34-liter high-pressure aluminum cylinder and precision reactive gas composition to deliver elite metrological stability for toxic/oxygen monitor audits. Achieving ±2% analytical accuracy, this assembly provides a high-fidelity reference for CO (50 ppm), H2S (25 ppm), and O2 (12%) in a Nitrogen balance. The sophisticated internal architecture maintains chemical stability over a 24-month shelf life, ensuring strict compliance with NIST-traceable standards for environments where LEL detection is not a primary requirement.

Hardware specifications include a standard C-10 (5/8″-18 UNF) valve interface and a 500 psig pressure rating to facilitate rapid stabilization during critical calibration audits. This assembly incorporates laboratory-grade gas fidelity produced in the United States, optimized for industrial environments where a non-flammable UN1956 classified mix is required for premium metrological performance. Safety is prioritized through the high-pressure aluminum construction, allowing technicians to perform precision verification with laboratory-grade signal integrity and full NIST traceability included for immediate site readiness. Experience superior metrological calibration precision with this RKI Instruments assembly, designed for premium performance.

Key Technical Features of 72-5357RK

• Gas Composition: CO (50 ppm), H2S (25 ppm), and O2 (12%) with N2 Balance
• Analytical Accuracy: Precision ±2% metrological reference grade
• Cylinder Volume: 34 Liters high-pressure aluminum capacity for field audits
• Shelf Life: 24-month analytical stability for reactive gas sensitivity
• Pressure Fidelity: 500 psig (at 70°F) stable stimulus delivery logic
• Valve Architecture: Standard C-10 (5/8″-18 UNF) connection interface
• Traceability Logic: NIST traceable reference standard for quality assurance
• Application Fit: Precision calibration for 3-gas toxic and oxygen monitors
• Safety Data: Classified as non-flammable compressed gas (UN1956)
• Manufacturing Origin: Precision produced in the United States (USA)

Included Components:

• 34L 3-Gas Calibration Cylinder
• NIST Traceable Reference Certificate
• Integrated C-10 Valve Assembly
• Individual Analytical Data Report

This reference standard is best applied for the routine calibration and sensor verification of 3-gas toxic/oxygen monitors in industrial hygiene and safety programs. This product is provided with a limited warranty specifically covering the analytical shelf-life and cylinder integrity as characterized by the manufacturer.