Isobutylene 100ppm

Isobutylene calibration gas is used for the calibration and verification of Photoionisation Detectors (PIDs) used to measure volatile organic compounds (VOCs).

Supplied at a certified concentration, isobutylene provides a stable reference gas for routine PID calibration, bump testing and instrument performance checks. Regular calibration helps ensure reliable VOC measurements during environmental monitoring, contaminated land investigation, occupational hygiene and other field applications.

Isobutylene is widely used as the standard calibration gas for PID instruments, with response factors allowing concentrations of other VOCs to be estimated relative to the instrument's isobutylene response.

Key Features

• Certified isobutylene calibration gas

• Suitable for PID calibration and function checks

• Provides a known reference concentration for accurate VOC measurement

• Suitable for routine field and laboratory calibration

• Available in portable calibration gas cylinders

• Compatible with suitable fixed-flow and demand-flow regulators

• Ideal for use as part of a complete PID calibration kit

Typical Applications

• PID calibration and bump testing

• VOC monitoring

• Contaminated land and site investigation

• Soil gas and vapour monitoring

• Environmental monitoring

• Occupational hygiene

• Industrial emissions and leak investigation

• Instrument servicing and maintenance

Why Isobutylene?

PID instruments can respond differently to different volatile organic compounds. Isobutylene is commonly used as the reference gas against which PID response is calibrated. Instrument-specific response factors can then be applied where measurements for particular VOCs are required.

For best results, the calibration gas concentration, regulator flow rate and calibration procedure should be selected in accordance with the PID manufacturer's recommendations.