LNI Schmidlin SA, based in Geneva, Switzerland, is a leading European organisation in gas calibrators, blenders, generators and linearisation systems. The company develops, manufacture and sell products for Air Pollution Monitoring, Emission & Process, Automotive and Laboratories. The product portfolio includes: - High precision calibrators for gas applications - Hydrogen, zero air, and nitrogen 19` rack generators for APM and CEM - Hydrogen, zero air, and nitrogen generators for GC and LCMS applications - Ozone Generators for low concentrations LNI Schmidlin SA maintains ISO 9001 for corporate activities, research and manufacturing. In order to satisfy high metrological requirements, LNI Schmidlin SA, has been working since several years with its own accredited ISO 17025 calibration laboratory.

About Us

Our Business : Creator of Gas Mixers and Gas Generators

'High-tech' specialist in gas calibrators, mixers and generators, LNI Schmidlin SA is based in Geneva, Switzerland.

For more than 100 years we export our products worldwide. Using the latest technologies to provide high quality products allowing our customers the highest productivity and competitiveness.

Since the 1st of January 2011, we built a partnership named Triangolo with D.B.S. Instrumenti Scientifici S.r.l. and Schmidlin Labor & Service AG who did strenghten our position on the market.

Our Quality Policy

Swiss Quality Products

The swiss quality starts with competent manpower.

At LNI Schmidlin SA, electronic specialists, programmers, engineers and commercials come from the best swiss schools. Faithfull to the company, they acquired a large experience in instrumentation and gas analysis. 

To insure the highest quality, LNI Schmidlin SA has got ISO 9001-2008 certification and ISO 17025 accreditation of its Gas Flow Standard laboratory.

We also got the ISO 13485 – 2003 and CE certification for our medical gas mixers.



Nowadays on-site gas generation has shown many benefits when compared with pressurized gas cylinders:

  • Economical: no more renting or logistics costs
  • Safe: lower stored volume at a lower pressure
  • Convenience: generation on demand, no more heavy handling
  • Environnement friendly: reduced carbon footprint, use of renewable resources air, water and energy
Air Pollution Monitoring

The measurement of pollutants such as O3, NO, NO2, CO, SO2 and HC to ppb’s and ppm’s require very sensitive analysers. Over the time or according regulations and devices requirements, calibration operations are required for each measured compound.

As low concentration gas standards are expensive, may be unstable or not storable, like for ozone, on-site reference gas generation with Sonimix calibrators reduce costs, logistics troubles and keep analysers performances at their higher level.

Emission and Process

CO2 taxes and regulations oblige power plants and incinarators owners to regulary measure and calibrate the emissions of their installations.

The Sonimix gas mixers allow to fulfil the regulation EN 14181 (with their QAL 1, QAL 2 et QAL 3) and to determine with precision what are the atmospheric emissions.

The Sonimix gas mixer allow to considerably diminish the cylinder's number, lowering the calibration costs as well as the handling efforts.


The specialists words are 'measuring is good but measuring right is better'.

At the moment the thought of an homologation happen for a new or existing engine development, the precision of gas measures is a crucial point.

In order to fulfill the various normalisations, the Sonimix gas mixers are the essential tools. They provide the precision, reliability ans verstility. Linearity and calibration of test bench become very simple.


Sonimix - Model 3080 - Hydrogen Generators

The SONIMIX 3080-plus is composed of a hydrogen generator and a zero Air Generator (as option). The SONIMIX 3080-plus has been specially designed to aliment in H2 and Air all the gas analyzer and gas chromatographs using a FID detector. The internal program and processor assure trough a simple and intuitive use the control of both generators and allow to check on line various functioning’s parameters such as: water level, water purity, outlet ...

Sonimix - Model 2106 - Gas Mixer

The binary gas divider from 0 to 100% in fixed steps, Sonimix 2106 is based on the principle of gas stream through sonic nozzles and is built according to the ISO 6145/6 normalization.


Calibration Services

LN Industries SA has its own ISO 17025 accreditated Laboratory for flow measurements as well as a large analyser's parc in order to provide a calibration certificate with analytical verifications.

Repair Services

Over the lifetime of your device you may need different support to keep its performances at their highest level. By contacting our service department you will get the different level of service. Prior to shipment, a Return Authorization form will define with you the whole process: timing, operations to be done, etc. Revisions and calibrations are done exclusively into our facilities. When for repair, the replacement of the defective part is enough to ...


GasCal - Gas Calibration System Software

GasCal is a complete PC software that able the user to enhance the functionality of the SONIMIX calibration system. With GasCal you will not spend time for complex programming any more. GasCal will help you in your daily work. With it’s friendly interface you are now able to manage all the accessories of your gas divider or calibration system. You will be able to store all your cylinders parameters and test procedures and recall them when ...


View more



Company details

Business Type:

Industry Type:
Monitoring and Testing - Laboratory Equipment

Market Focus:
Globally (various continents)

Year Founded:


Office & Distributor locations:


Environmental XPRT is part of XPRT Media All Rights Reserved