Lab Gas Generators — On-Site Liquid Nitrogen, Hydrogen, High-Purity Nitrogen & Gas Mixing for Petroleum and Analytical Labs
Eliminate cylinders. Eliminate deliveries. Eliminate downtime. F-DGSi and AlyTech lab gas generators produce liquid nitrogen, hydrogen, and high-purity nitrogen on demand — delivering a safer, more cost-effective, and uninterrupted gas supply for GC, ICP, TOC, and cryogenic applications. Made in France. 24-month warranty. Gold Service maintenance programme.
Download Brochure
Every Cylinder Change Is a Risk, a Cost, and an Interruption Your Lab Does Not Need
Gas cylinders have been the default supply method for laboratory gases for decades — but the limitations are well understood by every analytical lab that depends on them. High-pressure cylinders are a safety risk. Deliveries are unpredictable. Running out of hydrogen mid-sequence means a failed analysis and recalibration time. Liquid nitrogen deliveries require scheduling, storage management, and handling risks. And the cumulative cost of cylinder rental, delivery fees, and the labour involved in managing gas supply adds up significantly over the life of a laboratory instrument.
On-site gas generators eliminate all of this. They produce gas continuously from air or deionised water, at the point of use, at guaranteed purity, without cylinders and without deliveries. A hydrogen generator for a GC-FID runs 24/7, automatically, at controlled pressure and purity — eliminating both the cylinder supply chain and the interruptions caused by running out of gas mid-run. A liquid nitrogen generator produces cryogen on demand, at -196°C, directly available for cryopreservation, GCxGC cold traps, NMR, or cryotherapy — without a dewar delivery schedule. A calibration gas mixer generates the exact concentration of gas standards needed for multi-point calibration or LOQ/LOD validation, from percent down to ppb levels, on site, without ordering custom gas cylinders.
F-DGSi has been innovating, designing, and manufacturing gas generators near Paris, France, for nearly 20 years — all products designed and manufactured 100% in-house at their R&D and manufacturing facility. AlyTech, also French, has been producing GasMix dynamic gas mixers for over 15 years.
What F-DGSi & AlyTech Gas Generators Deliver in Your Lab
Uninterrupted, On-Demand Gas Supply
Gas generators produce continuously at the point of use — no deliveries, no cylinder changes, no interruptions to analysis sequences. A constant, uninterrupted gas supply of guaranteed purity eliminates the instrument re-calibrations required after cylinder changes, reduces analysis downtime, and removes the operational dependency on scheduled deliveries and cylinder availability.
Improved Safety — No High-Pressure Cylinders
High-pressure gas cylinders carry significant stored energy and handling risks. F-DGSi generators operate at low internal pressures with very limited internal gas volume — the COSMOS H2 hydrogen generator contains less than 50 ml of hydrogen gas at any time. Automatic internal leak checking on start-up, continuous operational monitoring, and automatic shutdown on detection of leaks or malfunctions provide multiple active safety layers that cylinders cannot replicate.
Remote Monitoring & Diagnostic Access
All F-DGSi generators (CRYOGEN, COSMOS, NESO) include remote PC monitoring and diagnostic analysis via USB, allowing operators to carry out checks and maintenance remotely without being physically present at the generator. The CRYOGEN liquid nitrogen generator additionally supports remote connectivity for system status monitoring — a key feature for cryogenic applications where continuous operation is critical.
Exclusive 100% Titanium PEM Electrolytic Cell — COSMOS H2
The COSMOS MF.H2 hydrogen generator uses an exclusive 100% titanium Proton Exchange Membrane (PEM) electrolytic cell — a design decision that provides significantly longer cell life and better hydrogen purity than stainless steel alternatives. The exclusive cold dual dynamic regeneration dryer eliminates all downtime for desiccant cartridge replacement, guaranteeing best hydrogen purity 24 hours a day.
PSA Technology with Energy Saving Mode — NESO N2
The NESO nitrogen generator uses fully regenerative Pressure Swing Adsorption (PSA) technology to separate nitrogen from oxygen in compressed air, producing high-purity nitrogen on demand. The Energy Saving Technology (EST) mode switches off the compressor automatically when gas supply is not required — reducing energy consumption and extending compressor durability significantly over the instrument lifetime.
Certified Calibration Gas Production — GasMix Aiolos III
The GasMix Aiolos III is uniquely capable of delivering a certificate for the produced concentration — not just the gas mixture. Each Mass Flow Controller (MFC) is factory calibrated at 20 set points across its full range for every gas matrix used, with multipoint calibration tables stored in the software. Maximum relative uncertainty is calculated and reported automatically for every delivered concentration. Full audit trail and ISO 6145-7 compliance.
Four On-Site Gas Generation Solutions — Liquid Nitrogen, Hydrogen, High-Purity Nitrogen & Calibration Gas Mixing
CRYOGEN Series — Liquid Nitrogen Generator (F-DGSi)
On-demand liquid nitrogen production at the point of use. The CRYOGEN series eliminates the cost of buying liquid nitrogen, the scheduling of dewar deliveries, and the handling risks of managing cryogenic liquid supply. Produce liquid nitrogen at -196°C wherever power is available.
CRYOGEN.10 — 10 L/day — 35 L dewar — Water cooled
CRYOGEN.20 — 20 L/day — 100 L dewar — Water cooled — 120 x 180 x 60 cm
CRYOGEN.30 — 30 L/day — 100 L dewar — Water cooled
CRYOGEN.40 — 40 L/day — 160 L dewar — Water cooled
CRYOGEN.65 — 65 L/day — 210 L dewar — Water cooled — 180 x 180 x 80 cm
CRYOGEN.80 — 80 L/day — 210 L dewar — Water cooled
CRYOGEN.130 — 130 L/day — 300 L dewar — Water cooled — 200 x 170 x 200 cm
CRYOGEN.240 — 240 L/day — 500 L dewar — Water cooled — 160 x 180 x 280 cm
CRYOGEN.10-RA — 10 L/day — 35 L dewar — Air cooled — 80 x 180 x 80 cm
CRYOGEN.20-RA — 20 L/day — 100 L dewar — Air cooled
CRYOGEN.30-RA — 30 L/day — 100 L dewar — Air cooled — 120 x 180 x 60 cm
CRYOGEN.40-RA — 40 L/day — 160 L dewar — Air cooled
CRYOGEN.65-RA — 65 L/day — 210 L dewar — Air cooled — 180 x 180 x 80 cm
CRYOGEN.80-RA — 80 L/day — 210 L dewar — Air cooled
Produces liquid nitrogen (LN2) on demand — boiling point -196°C (-321°F)
LN2 purity: >99% (< 1% O2)
LN2 pressure: up to 4.0 bar
Two cooling variants: Water Cooled (CRYOGEN.10 to CRYOGEN.240) and Air Cooled (CRYOGEN.10-RA to CRYOGEN.80-RA)
Water cooled output range: 10 L/day (CRYOGEN.10) to 240 L/day (CRYOGEN.240)
Air cooled output range: 10 L/day (CRYOGEN.10-RA) to 80 L/day (CRYOGEN.80-RA)
Integrated liquid N2 dewar (built-in storage): 35 L to 500 L depending on model
Remote connectivity for system status monitoring
CE certified · Made in France · 24-month warranty (Gold Service available)
Cryogenic Safety Equipment (gloves, visors, apron)
Insulated Cryogenic Hoses — for safe LN2 transfer
Range of Dewars — individual laboratory storage
Cryogenic Isolation Valves
Oxygen Depletion Alarm — continuous O2 monitoring in enclosed spaces
Water Chiller — recirculating chiller for water-cooled models
COSMOS MF.H2 — Hydrogen Gas Generator for GC/GC-MS (F-DGSi)
On-site hydrogen production for GC carrier gas (faster and more sensitive than helium), FID/FPD/NPD/TCD detector fuel gas, and high-speed GC methods. Exclusive 100% titanium PEM technology and cold dual regeneration dryer — zero maintenance, guaranteed purity 24 hours a day.
GC-MS and GC-FAST carrier gas
GC-FID, GC-FPD, GC-NPD, GC-TCD detector fuel gas
ICP-MS
THA (Total Hydrocarbon Analyser)
Hydrogenation
Fuel cell applications
Hydrogen produced from deionised water — 100% titanium PEM electrolytic cell
H2 purity: >99.99999% (O2 < 0.1 ppm, dewpoint H2O < -75°C / -103°F)
Delivery pressure: 1–11 bar (14–160 psi)
Flow rates: 110, 170, 260, 300, 400, 500, 600, 1000, 1200, 1350, 1500 cc/min
Exclusive cold dual regeneration dryer (PSA): removes moisture and O2 — no desiccant cartridge replacement required
Optional Cold Palladium Catalyst: reduces O2 < 0.01 ppm and moisture < 1 ppm
LCD touch screen: H2 outlet pressure, flow rate, water quality, water level, alarms, breakdowns
LED indicators: Ready, Stand-by, Alarm, Off
Remote PC monitoring and diagnostic analysis via USB
Automatic internal leak check on every start-up
Cascading mode capability (connect multiple units)
Internal water tank: 2.3 litres; optional external tank: 5 or 10 litres
Water quality: deionised, ASTM II, < 1.0 µS conductivity
Dimensions: 27 x 44 x 38 cm (10.5″ x 17″ x 15″)
Weight: 17/37.5 kg (MF.H2.110/170); 18/29.6 kg (MF.H2.260–600); 20/44 kg (MF.H2.1000/1200); 22/48 kg (MF.H2.1500)
Electrical supply: 220–240 V 50 Hz or 110–120 V 60 Hz
CE, FC certified · Made in France · 24-month warranty · Gold Service available
NESO — High-Purity Nitrogen Generator (F-DGSi)
On-site high-purity nitrogen for GC, ICP, TOC, and DSC/TGA instruments. PSA technology with optional integral oil-free air compressor. Energy Saving Technology (EST) automatically switches off the compressor when gas is not required. Compact, quiet, and mobile on wheels.
NESO.1/0 (no compressor): 1 L/min · 47.5 x 66.2 x 65 cm · 54/119 kg · 150 VA
NESO.1/1 (with compressor): 1 L/min · 47.5 x 66.2 x 65 cm · 58/127 kg · 375 VA
NESO.3/0: 3 L/min · 47.5 x 66.2 x 79 cm · 71/156 kg · 150 VA
NESO.3/1: 3 L/min · 47.5 x 66.2 x 79 cm · 94/207 kg · 850 VA
NESO.5/0: 5 L/min · 47.5 x 66.2 x 79 cm · 91/200 kg · 150 VA
NESO.5/1: 5 L/min · 47.5 x 66.2 x 79 cm · 118/260 kg · 850 VA
GC carrier gas and detector make-up gas
ICP/ICP-MS nebuliser and spray chamber gas
TOC (Total Organic Carbon) analyser gas
DSC/TGA (Differential Scanning Calorimetry / Thermogravimetric Analysis)
N2 purity: 99.9995% (< 5 ppm O2)
Particles: 0.01 µ
Max nitrogen pressure: 6 bar (87 psi)
Three flow rate models: NESO.1 (1 L/min), NESO.3 (3 L/min), NESO.5 (5 L/min)
Each model available with (1) or without (0) integrated oil-free air compressor
Technology: fully regenerative PSA (Pressure Swing Adsorption)
Energy Saving Technology (EST): compressor switches off automatically when gas not required
Fast start-up purity: < 60 minutes
Intelligent colour touch screen: inlet/outlet pressure, N2 flow, system status, remote diagnostic access
Audible alarm, visual maintenance indication with history log
Auto start
Outlet flow indicator
Remote PC monitoring and diagnostic analysis via USB
Soundproofed compressor box with anti-vibration features
Option: Online N2 purity monitoring sensor (O2 sensor)
Compact design with wheels — bench-top or under-bench installation
Max altitude: 3000 m
Max relative humidity: 80% RH at 25°C
Temperature range: 5–25°C (41–77°F)
Electrical supply: 220–240 V or 110–120 V ac / 1 ph / 50–60 Hz
CE certified · Made in France · 24-month warranty · Gold Service available
GasMix Aiolos III — Intelligent Dynamic Gas Mixer & Diluter (AlyTech)
The latest generation of the GasMix family from AlyTech — the intelligent, scalable dynamic gas mixer and diluter for multi-point GC calibration, linearity checks, LOQ/LOD validation, and custom gas standard preparation. Generates calibration gas at desired concentration from % down to ppb, on site, with certified concentration output.
Petrochemical — calibration of GC, µGC, elemental analysers, spectrometers
Environmental — calibration of ambient air monitors and gas detectors
Food & Flavour — quality control gas standard preparation
Specialty Gases — customised secondary standards
Research — generation of complex gas mixtures and reactive gas standards
Mixes and dilutes 2 to 6 gases simultaneously
Concentration range: % to ppb (dilution factors up to 10⁸)
Mass Flow Controller (MFC) based — each MFC factory calibrated at 20 set points per gas matrix
Flow accuracy: ±1% of required value over entire scale
Repeatability: < 0.1% of requested value
MFC range: 2% to 100% of full scale
Number of channels: 2 to 6 (expandable)
Inlet gas pressure: 3 bar(g) to 8 bar(g) maximum
Outlet pressure: atmospheric up to 7 bar(g)
Connections: Swagelok 1/8″
NEW: Built-in second stage dilution (Cascade)
Compatible gases: pure gases, concentrated mixtures, aggressive and reactive gases (contact AlyTech for confirmation)
Dedicated GasMix software (Windows 10+): controls MFCs, calculates flows, handles calibration tables, automatic correction factor calculation, communicates with analyser, stores preprogrammed sequences
Delivers certificate for the produced concentration — unique on the market
Maximum relative uncertainty calculated and reported automatically
Full audit trail (Audit Trail function) — complete traceability
ISO 6145-7 compliant
Fully upgradeable at any time: add gas channels, FReD, Cascade accessories
Software: Ethernet port communication; runs on Windows 10 or higher
Operating temperature: 10–50°C
Power: 90–260 Vac, 1.5–4A, 50–60 Hz
Dimensions: 45 x 22 x 38 cm (or 45 x 22 x 59 cm with options)
Weight: approximately 14 kg (configuration dependent)
Specifications at a Glance
Flow rates
The only dynamic gas mixer on the market that delivers a certificate for the produced concentration — ISO 6145-7 compliant, with full audit trail and automatic uncertainty calculation for every prepared gas standard.
±1% of required value
ISO 6145-7 compliant — certified concentration output
Manufacturer
AlyTech · Made in France
Who Uses Lab Gas Generators
Petroleum Refinery & Petrochemical Labs
GC carrier gas and FID fuel gas supply for high-throughput petroleum GC analysis. The COSMOS H2 hydrogen generator provides uninterrupted H2 supply for DHA, SimDist, RGA, and PIONA GC methods — faster and more sensitive than helium, without cylinder change interruptions. The NESO N2 generator supplies nebuliser and make-up gas for ICP-OES petroleum metal analysis. The GasMix Aiolos III prepares multi-point calibration gas standards for GC and ICP analysers on site.
Gas Chromatography Laboratories
Any GC laboratory dependent on helium carrier gas is exposed to ongoing helium price volatility and supply uncertainty. The COSMOS H2 generator provides the hydrogen carrier gas supply needed to switch GC methods to hydrogen — with the DVLS³ Simply Smart Sensor providing the required safety monitoring inside the GC oven. Run time savings of 25% to 35% without loss of chromatographic resolution are typical when switching from helium to hydrogen carrier.
ICP & Analytical Chemistry Labs
NESO nitrogen generators supply ICP, TOC, and DSC/TGA instruments with a continuous, high-purity N2 supply at the bench — eliminating cylinder storage requirements and the recalibration events triggered by cylinder changes. The COSMOS H2 provides hydrogen for ICP-MS collision/reaction cell operation and for FID-equipped hyphenated GC instruments.
Cryogenic Applications — Medical, Research & Food
The CRYOGEN liquid nitrogen generator serves the full range of cryogenic applications where LN2 is consumed on a regular basis: cryopreservation (biological samples, embryos, sperm, oocytes), cryotherapy (medical tissue treatment), NMR spectroscopy (shielding magnet from external heat), GCxGC cold traps, dermatology, cell preservation, and metal cryogenic hardening. In-house LN2 production eliminates all dewar delivery logistics.
Gas Standard Calibration & Compliance Labs
The GasMix Aiolos III is the solution for labs that need traceable, certified gas standards for multi-point analyser calibration, linearity verification, LOQ/LOD validation, and method qualification — without ordering a separate certified gas cylinder for every concentration point. Reduces calibration gas cylinder consumption significantly, with a full audit trail for regulatory compliance.
Environmental Monitoring & Food Quality Labs
The GasMix Aiolos III generates calibration standards for ambient air monitors and gas detectors (environmental labs) and for food quality gas analysis applications. Compatible with aggressive and reactive gases including trace sulfurs, ammonia, and VOCs.
Why Source Lab Gas Generators Through KB Scientific
Three things that set sourcing through KB Scientific apart from buying direct or through a general lab equipment distributor with no petroleum GC or gas generation background.
Advised by a Former Petroleum Lab Manager
Kevin Batt has managed petroleum and analytical testing labs where gas supply continuity — hydrogen for GC, nitrogen for ICP, liquid nitrogen for cryogenic storage — directly impacts daily analytical output. His guidance on generator selection, flow rate sizing, and the safety considerations of switching to hydrogen carrier gas comes from direct operational experience.
Authorized F-DGSi & AlyTech Representative
KB Scientific is an authorized Midwest representative for F-DGSi and for the AlyTech GasMix range through Windward Analytical. Direct manufacturer relationship means accurate product configuration, correct flow rate and model selection for your application, and access to the F-DGSi Gold Service maintenance programme — structured preventive maintenance and priority intervention throughout the life of the generator.
Local Midwest Support
Based in Fishers, Indiana, serving 10 states. Kevin is reachable directly by phone or email for pre-sale flow rate sizing, application questions, and post-delivery support. Not a national distributor catalogue. Not a multi-day response queue.
Frequently Asked
Questions
What GC lab managers, ICP analysts, and procurement teams ask most often about on-site lab gas generators.
Is it safe to use a hydrogen generator in a GC lab?
Yes — with the right safety measures in place. F-DGSi hydrogen generators (COSMOS MF.H2) are designed with safety as a primary principle: the internal gas volume is less than 50 ml at any time (far below any explosive accumulation threshold), automatic leak checking runs every time the unit starts, and continuous operational monitoring shuts the unit down automatically on detection of leaks or malfunctions. For the GC oven itself, the DVLS³ Simply Smart Hydrogen Sensor (also available through KB Scientific) provides continuous hydrogen concentration monitoring inside the oven — the standard safety precaution for hydrogen carrier gas use that eliminates the residual risk of hydrogen accumulation inside the GC enclosure.
What flow rate do I need for my GC — which COSMOS model should I specify?
The right COSMOS model depends on the number of GC instruments being served and the detector types. A single GC-FID using hydrogen as carrier gas typically requires 200–400 cc/min. A GC-MS in fast mode using hydrogen carrier may require 400–600 cc/min. Multiple instruments served from one generator require their individual flows to be summed, plus a 20% safety margin. Kevin will size the correct COSMOS model for your specific GC configuration — contact him with the instrument models, number of instruments, and detector types.
Can the NESO nitrogen generator be used without an external compressed air supply?
Yes. Every NESO model is available in two configurations: without integrated compressor (model suffix /0 — requires a facility compressed air supply at 8 bar / 116 psi) or with an integrated oil-free air compressor (model suffix /1 — fully self-contained, no external air required). The /1 configuration with integral compressor includes Energy Saving Technology (EST) which switches the compressor off automatically when N2 is not required, reducing energy consumption and extending compressor life.
What is the advantage of the CRYOGEN over ordering liquid nitrogen deliveries?
Liquid nitrogen deliveries require scheduling, dewar management, storage space, handling training, and ongoing purchase costs that accumulate significantly over the life of a cryogenic application. The CRYOGEN produces liquid nitrogen continuously on demand — no delivery schedule, no dewar storage logistics, no waiting for a delivery when you need LN2 urgently. For high-consumption applications (NMR, GCxGC, large cryopreservation programs, cryotherapy), the payback period is typically well under three years. Remote connectivity allows operators to monitor system status without being physically present at the unit.
What makes the GasMix Aiolos III different from a simple gas blender?
A simple gas blender sets a fixed ratio. The GasMix Aiolos III is a dynamic gas mixer with certified output — it uses Mass Flow Controllers calibrated at 20 points across their full range for every gas matrix, calculates maximum relative uncertainty automatically for every generated concentration, and delivers a certificate for the produced mixture. It can generate concentrations from percent down to ppb (dilution factors up to 10⁸), synchronise dilution and injection timing with an external analyser, and store pre-programmed sequences for automated multi-point calibration runs. It is an ISO 6145-7 compliant metrology instrument, not a blend controller.
What is the Gold Service maintenance programme?
Gold Service is F-DGSi’s structured maintenance programme for the lifetime of the generator. It provides programmed preventive maintenance by F-DGSi-approved technicians and priority intervention in the event of a failure — ensuring optimal performance and maximum uptime for generators in critical laboratory applications. The 24-month product warranty is extended to a second year subject to the generator being serviced at the end of the first year per the fixed annual schedule. Kevin can advise on Gold Service options and scheduling through KB Scientific.
Other Instruments You May Need
Ready to Eliminate Cylinders and
Switch to On-Site Gas Generation?
Request a Quote or Technical Consultation
Kevin Batt — former lab manager, authorized F-DGSi and AlyTech GasMix representative — will review your gas applications, instrument types, and daily consumption, and recommend the right generator configuration and flow rate for your lab. CRYOGEN, COSMOS, NESO, GasMix, or a combination. No obligation.