34 L
0.495 L water capacity. The workhorse size for portable 4-gas detectors.
Precision Gas Mixture
Calibration gas your detector can trust.
VGAS blends span and calibration gases gravimetrically, fills them into disposable aluminium cylinders and ships them with a traceable certificate of analysis — so every bump test and every calibration starts from a known value.
21Gas components
±3%Blend accuracy
34 · 60 · 112 LCylinder sizes
up to 36 moShelf life
What we make
Three families, one production standard
Every cylinder is filled to order from certified source gases and verified before it leaves the plant.
Multi-gas mixtures
Two to five components in one cylinder — the classic 4-gas confined-space mix (H₂S, CO, CH₄ or LEL hydrocarbon, O₂) plus CO₂ and SO₂ variants.
Read moreSingle gases
One active component in a nitrogen or air balance, from 5 ppm reactive gases up to percentage-level hydrocarbons and oxygen.
Read moreZero & purge gases
99.999 % nitrogen and synthetic zero air for baseline setting, sensor purging and instrument verification.
Read more
Gas range
21 components, blended to your concentration
Concentrations shown are our standard stock points. Any concentration within the sensor range can be blended to order.
Toxic
Combustible
Oxygen
Inert / zero
Cylinder sizes
Three disposable cylinder sizes
Seamless aluminium alloy 6061A, brushed and clear-lacquered, with a 5/8"-18 UNF (C10) valve inlet to ISO 11118. Every cylinder is labelled with its component list, batch number, fill pressure and valid-until date.
60 L
Longer service interval for a busy calibration bench or a shared cylinder.
112 L
1.8 L water capacity. Fixed-system calibration and docking-station duty.
Valve inlet 5/8"-18 UNF (C10) as standard. Fill pressure 500 or 1000 psi (25 – 70 bar) depending on the mixture.
Why VGAS
Built around one number: the one on your certificate
Gravimetric blending
Components are weighed, not estimated. Blend tolerance is ±3 % of the stated concentration.
Traceable certificate
Every cylinder carries a batch number, fill date and expiry date printed on the label, matched to its certificate of analysis.
ADR-ready transport
Disposable cylinders are classified, labelled and packed for road transport, including UN 1954 / UN 1956 flammable and non-flammable mixtures.
Detector-agnostic
Mixtures are specified by gas and concentration, so they work with any brand of portable or fixed detector.
How it works
From your sensor list to a filled cylinder
Tell us the sensors
Send the gas types and target concentrations, or the part number you use today.
We confirm the blend
We check chemical compatibility, cylinder material and realistic shelf life, then quote.
Filling and analysis
The mixture is blended gravimetrically, analysed against a reference and labelled.
Shipped with documents
Certificate of analysis and safety data sheet travel with the shipment.
Where it is used
Wherever a gas reading has to be right
Maritime & offshore
Oil, gas & petrochemical
Confined space entry
Fire & rescue services
Water & waste treatment
Laboratories & QC
Need a mixture that is not on the list?
Send us the sensor configuration and we will quote a custom blend, cylinder size and regulator as one package.