
Isobutylene (C₄H₈)
- NIST Traceable certified accurate blends
- Cylinders from 17 to 250 ft³ available
- Custom gravimetric blending in-house
NIST Traceable Gas Standards
ISO 17025 Accreditation Compliant
Isobutylene (C₄H₈) calibration gas at 100 ppm is a NIST-traceable hydrocarbon standard used for calibrating gas detectors, analyzers, and chromatography equipment. Produced by SpecGas Inc. using proprietary gravimetric blending techniques, these precision mixtures serve petrochemical, research, electronics, and industrial process control applications.


Isobutylene is the standard reference gas used to calibrate photoionization detectors (PIDs). It is the industry-recognized standard for PID response factor calculations, making a 100 ppm isobutylene mixture the go-to calibration gas for these instruments.
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Used for process control instrumentation calibration and monitoring in petrochemical refining and manufacturing plants.

Provides stable hydrocarbon reference standards for gas chromatography and analytical instrument calibration in research labs.

Supports process monitoring and equipment calibration in electronics and semiconductor fabrication environments.

Serves as a reference standard for PID and hydrocarbon analyzers used in emissions and ambient air quality monitoring programs.
Talk to our experts for custom solutions and tailored guidance.
Every isobutylene calibration gas mixture is NIST traceable and produced via proprietary gravimetric blending for verifiable, repeatable accuracy.
All mixtures are blended in-house at our Bridgeport, PA facility, enabling industry-leading turnaround and rush service when your timeline demands it.
Founded by research chemist Alfred Boehm with decades of specialty gas R&D experience, SpecGas delivers technical depth and quality assurance larger suppliers cannot match.
Submit your requirements and a SpecGas specialist will respond promptly with pricing, cylinder options, and custom blending details.
For immediate assistance, feel free to give us a direct call at (215) 443-2600. You can also send us a quick email at website-inquiries@specgasinc.com.
For immediate assistance, feel free to give us a direct call at (215) 443-2600. You can also send us a quick email at website-inquiries@specgasinc.com.