GASCO 74L-438 Calibration Gas (Hydrogen Sulfide 25 ppm in Nitrogen)
The GASCO Calibration Gas: Nitrogen (MPN 74L-438) is a disposable calibration gas for portable gas detectors, featuring a mixture of Hydrogen Sulfide 25 ppm with a background gas of Nitrogen and +/-5% accuracy…
SKU 3G-OTH-549149
Also listed as: 74L438 · 74L 438
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
The GASCO Calibration Gas: Nitrogen (MPN 74L-438) is a disposable calibration gas for portable gas detectors, featuring a mixture of Hydrogen Sulfide 25 ppm with a background gas of Nitrogen and +/-5% accuracy. Designed for use with all OEM gas detectors, this product supports reliable sensor calibration across industrial safety applications.
Frequently Asked Questions
What is GASCO calibration gas 74L-438 used for?
GASCO 74L-438 is a disposable calibration gas used to verify and adjust the accuracy of portable gas detectors in industrial safety applications. It contains 25 ppm Hydrogen Sulfide in Nitrogen, ensuring reliable sensor response for confined-space entry, refinery, and chemical plant environments.
What are the specifications of GASCO 74L-438 calibration gas?
GASCO 74L-438 is a disposable calibration gas with +/-5% accuracy, containing a mixture of C3H8, CO, H2S, and O2 in a Nitrogen background. The Hydrogen Sulfide concentration is 25 ppm. It is designed for use with all OEM gas detectors and carries MPN 74L-438.
Where to buy GASCO 74L-438 calibration gas worldwide?
3G Electric supplies GASCO 74L-438 calibration gas to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this disposable calibration gas for portable gas detectors.
How to use GASCO 74L-438 calibration gas for sensor calibration?
Attach the GASCO 74L-438 disposable cylinder to your gas detector’s calibration adapter, open the valve, and allow the 25 ppm Hydrogen Sulfide mixture to flow over the sensor. Follow the detector manufacturer’s calibration procedure. Dispose of the cylinder after single use per safety guidelines.
GASCO Products
3G Electric supplies GASCO calibration gases for portable gas detectors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
