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Both the founder of the company as well as the actual management have always been focussed on the development of advanced products dedicated to defined areas of applications. We are certified according to ISO 9001 by Lloyd's Register. Our philosophy has always been to accept the challenge.

Gas Analysis

Sample Gas Probes

Either in environmental related gas analysis like  stack testing, continuous emission monitoring (CEM), vehicle emission testing or LEL warning indication and in process applications like combustion efficiency monitoring, boiler trim, ethylene plants or petro chemistry, sample gas needs to be extracted from the gas stream.

It is obvious, that for a reliable analysis the sample gas must be extracted free of ambient gas leaking into the system and at the same time the dew point of the sample must remain stable.

This explains why the sample gas probe is the important interface between the process and the analyser system.

Quality, reliability and low operation cost have been the main targets for the development of this programme. The results are outstanding: the modular design allows application specific combinations in a very price effective manner.

The GAS 222 series of sample probes provides "down to earth" solutions based on advanced modular designs.Depending on the application, a variaty of heated or unheated basis units can be combined with in-situ or downstream filters. The filter material can be chosen from sintered ceramic to sintered stainless steel or even pleated stainless steel. Filters with large surfaces provide long life time. For the in-situ filters a highly efficient blowback system is available at reasonable cost.

The ECO series covers a broad range of applications with high dust loads but do not require heating. The directly attached blowback devices plus a variaty of filter elements with large surface areas are the features of these probes.

The APO series provides professional material for simple applications.

Sample Gas Filters

The distance between the extraction point of sample gas and the analyser cabinet is normally bridged by tubes or hoses in continuous emission monitoring (CEM) systems. Depending on the method of analysis (FDIR, HFID, hot wet analysis, total hydrocarbons, etc.), these gas lines can be unheated or must be heated to prevent unwanted condensate formation.

Due to the nature of such installations, additional in-line filtration is required.

Bühler offers a wide selection of unheated and heated filters specifically designed for gas sampling applications.

Sample Gas Pumps

The transportation of sample gas in sample conditioning systems requires very reliable sample pumps. Of course, the sample gas should have an equal and steady flow but very often the corrosive nature of the gas and the presence of condensate form the real task for the pump.

The sample pumps are equipped with a bellow made of solid PTFE which has proven its reliability and long lifetime in numerous applications. If the pump head is pointed downwards the pump is able to pump sample gas with condensate contents.

A special flange design makes the P2.4 and P2.84 pumps suitable for hot applications i.e. the flange is designed of two parts, one -carrying the pump head - can be installed into a heated cabinet and the other part - carrying the electrical motor - is flanged to the outside of the cabinet keeping the motor in ambient conditions.

Sample Gas Coolers

A very effective range of heat exchangers made from various materials in connection with high performance cooling systems provides exceptional stable dew points, an essential issue for trouble free analyser systems. Compact physical dimensions require little installation space. A broad range of accessories help to discharge the condensate efficiently.

Flow Meters

Material composition and configuration are particulary made for sample conditioning systems. Needle valve and flow controller are available optional.


An interesting range of portable and stationary gas analysers with various configurations and measuring principles.

NOx converter

Easy and reliable conversion of NOx to NO. Long lifetime, no production of CO and CO2. No cross interference with water.

In order to keep the NOx measurement in EPA method 7E and 20 in an economic frame, for example for applications like diesel NOx monitoring or automobile NOx monitoring, the conversion of  NOx into NO with Nox Converter is the best economical and reliable solution.

The sample gas streams through a catalyst filled cartridge inserted into an oven which is heated up to over 400°C. The catalyst converts the NOx to NO and thus makes the analysis possible with IR analysers.

O2 in situ process analyzers

An interesting range of portable and stationary gas analysers with various configurations and measuring principles.

A broad range of applications like boiler trim, emission monitoring, ammonia slip monitoring, combustion efficiency, LEL warning indication or inner atmosphere control require analysers with different measuring principles. Bühler offers optical, paramagnetic and zirconium technologies as well as tuned diode laser (TDL) gas analysers.

Prebfab Conditioning Systems

Every kind of gas analysis, either fairly straight forward single component analysis or complex multi component process gas analysis require application specific sample gas conditioning systems. These systems must deliver continuously reliable process data even under varying ambient and/ or process conditions.

It is quite obvious, that stack testing has other requirements than engine emission testing, EPA methods testing or process applications in the food industry just to name a few.

Bühler  delivers modular designed prefabricated systems as mobile or stationary stand alone or 19” rack mount solutions and assists in planning application specific gas analysis systems on panels, in cubicles or analyser shelter.

TC-Double+: washout optimized

Low washout effects. One gas path. Duran glass or PVDF heat exchanger. Dew point stability 0.1°C. Suitable for AMS according to EN15267-3


SERVOFLEX Micro i.s (5100 i.s)

The SERVOFLEX Micro i.s is a single component Intrinsically Safe Portable Gas Analyser that is certified to zone 0 and zone 1.

Technology Used

Oxygen – a choice of two Servomex paramagnetic transducers (standard or high accuracy) both offering fast selective measurement of oxygen without the disadvantages of electrochemical or zirconia cells.
Carbon Dioxide and Carbon Monoxide – Single beam, single wavelength infrared technology using Servomex patented long life source gives a highly stable, selective and low maintenance measurement.


Typical Applications



Puzzled by Which ICP-OES is right for you? No Need to be! Leeman labs offers the widest configuration of ICP spectrometers to fit any applications! In 30 years of supplying ICP Spectrometers, we’ve learned no one ICP-OES is ideal for all applications. That’s why Teledyne Leeman Labs offers you the broadest range of ICP Spectrometers available. Let us help you select the best instrument configuration for your sample types. All our ICP Spectrometers are available in Radial, Axial or Dual View Configurations, so you can choose the view that’s best for your sample matrix. Mercury When the concentration of mercury needs to be measured, laboratories all over the world turn to Teledyne Leeman Labs for high performance solutions to their mercury analysis challenges. To help you select the right mercury analyzer for your application download the Mercury-at-a-Glance Comparison Guide and find out which mercury analyzer is the perfect fit for your laboratory needs.



When the concentration of mercury needs to be measured, laboratories all over the world turn to Teledyne Leeman Labs for high performance solutions to their mercury analysis challenges. To help you select the right mercury analyzer for your application download the Mercury-at-a-Glance Comparison Guide and find out which mercury analyzer is the perfect fit for your laboratory needs.

When the concentration of mercury needs to be measured, laboratories all over the world turn to Teledyne Leeman Labs for high performance solutions to their mercury analysis challenges. To help you select the right mercury analyzer for your application download the Mercury-at-a-Glance Comparison Guide and find out which mercury analyzer is the perfect fit for your laboratory needs.


Laboratory Syringe Pumps

Pump almost anything! Teledyne Isco syringe pumps give you precise, reliable metering for an incredible range of applications. You’ll easily handle viscosities from liquefied gases to tar, flow rates from sub-microliter to 400 ml per minute, and pressures to 30,000 psi (2068 bar). 

Use these rugged, do-anything pumps to solve your toughest fluid delivery problems, from micro-flow to scale-up and pilot plant, pumping corrosive liquids, and safe operation in explosive atmospheres with the HL Series. 

• Core Flooding 
• Reactant Feeding 
• Supercritical Fluids 
• HPLC and Ultra-HPLC 
• Alternative Energy – Biomass 

Isco’s programmable multi-pump controller interfaces easily with your system, and provides great versatility with single pump independent mode, dual pump continuous delivery or receive mode, and several three-pump control modes. 


Laboratory Systems:

Teledyne Isco:  The Teledyne Isco Chromatography product line includes instruments and accessories for purification of organic compounds in normal-phase and reversed phase separations, and for bio-purification of proteins, peptides, and other biopolymers. 


CombiFlash® Purification Systems
Teledyne Isco CombiFlash® systems meet the high-productivity needs of organic and medicinal chemists.

RediSep® Rf Media
Performance and peace of mind.

Fraction Collectors
Providing scientists with reliable LC collection for over 40 years.

Reliable detectors for organic and natural product liquid chromatography

Peristaltic Pumps
Built for years of reliable service


Density gradient centrifugation is used for the gentle isolation of cellular ribosomes, RNA, DNA, and organelles. These unique density gradient systems automate the preparation of gradients, and the fractionation and UV scanning of zones after the spin. 

Density Gradient Fractionation Systems
Choose the system that meets your automation needs.


Laboratory Analysers:

Picarro is a leading provider of solutions to measure greenhouse gas (GHG) concentrations, trace gases and stable isotopes across many scientific applications, along with the energy and utilities markets. 


Cavity Ring-Down Spectroscopy

Our patented Cavity Ring-Down Spectroscopy (CRDS) is at the heart of all Picarro instruments and solutions, enabling the detection of target molecules at part per billion, or better, resolution. 


Lab Sample Take Off Systems

Dopak – The Dopak SRS offers the ability to recover a liquid sample from the sample bottle without the risk of spillage or contamination. Applications for this system can be found in plant laboratories. The unique design offers a one handle operation by multiple valves. In addition, the nitrogen purge not only assists in driving the liquid out of the sample bottle, but also cleans the whole system including needle assembly and sample bottle.


Gas, Liquid and Vapour Samples

Dovianus develops, produces and markets sampling systems for liquids, gases and liquefied gases under the name Dopak. We are respected for our sampling systems in the international chemical and petrochemical industries. Dopak closed vent samplers allow you to safely take samples of toxic, dangerous and volatile substances, without any danger for your operators or the environment.


Instrumentation Pressure Regulation

GO Regulator is a leading designer and manufacturer of standardized and specialty pressure regulators, diaphragm valves, and filters for the Analytical, Instrumentation, Petrochemical, Oil & Gas, and Specialty Gas industries. GO regulators and valves fulfill a wide range of applications, controlling pressure while accommodating low to moderate flow rates of many gases and liquids. A broad range of pressure regulator requirements can be fulfilled by the complete line of time proven GO fluid control products. GO regulators provide back pressure regulation for high-pressure, high sensitivity, sub-atmospheric applications, as well as vaporizing regulation for LNG and cylinder pressure regulation.


High Quality Instrumentation Valves and Fittings

HOKE is the logical choice for fluid control solutions for orifice sizes typically up to 2”. With the lowest cost of ownership, the best in class reliability and global distribution assuring availability of products, HOKE valves and fittings are unmatched. In the early 1960’s, HOKE introduced the GYROLOK® tube fitting. To this day, GYROLOK design features offer unique advantages and benefits that are unmatched in the industry. Through years of experience, HOKE understands that precise flow control is a complex thing, not a commodity. At HOKE, the approach is to focus on the whole process in order to satisfy all requirements of the end-user.


Heated Probes

JCT – ·  Robust, compact transport case with all necessary parts for mobile gas sampling: gas sampling probe, heated sample line, sampling tubes, filter elements, calibration gas connection, mounting chains, …


Sample Pumps


Air Dimensions Incorporated has more than 60 years of combined experience in the development, engineering and production of precision gas sampling diaphragm pumps and compressors. Each of our durable Dia-Vac® pumps boasts completely oil-free, contamination-free and leak-free sampling capability. Unsurpassed quality, personal customer service and expedited delivery all combine to make ADI the leading authority in the diaphragm pump industry.


When a pump goes down, we know that replacement parts or a completely new pump must be dispatched as quickly as possible, and ADI stands ready to get the job done. We have a track record for making on-time deliveries no other pump manufacturer can match – it’s something we are proud of. It’s something you can rely on.


Gas Analyser filter particulates and moisture

Headline Filters

Headline Filters produce a wide range of products for the filtration industry, from filter elements, for coalescing or particulate duty, in a wide variety of industry-standard sizes to filter housings in a variety of materials for pressures up to 700 bar. To complement these products, we also offer a range of Membrane Separator housings for those applications requiring zero liquid entrainment.

Also available are disposable inline filters which offer the user a cost-effective and easy-to-replace robust filter suitable for portable analyser systems.

Headline Filters also produce adsorption products in a variety of forms, ideal for last-chance air purification and analyser protection. Disposable types eliminate the need to handle loose adsorbents although re-fillable versions are also available. Many different adsorbents are available to cater for virtually all requirements.


Compressed Air Filtration

These filters are suitable for a variety of gas and liquid applications. The disposable bonded microfiber filter elements are extremely efficient as well as being low cost. They offer high flow rates with very low pressure drops. All products conform to industry standard sizes and grades and are completely interchangeable with other manufacturers housings and filter elements.

The comprehensive product range enables greater flexibility for customers because of the greater choice. The development of new products is customer driven, with our engineers working closely with OEM customers and end-users. Special housings and filter elements developed to meet specific customer requirements and specifications are available.

A global distributor network, that includes all of Europe and the USA, South East Asia, Australia and South Africa, offers unbeatable delivery times and service. Along with over 29 years of experience & expertise all standard products are kept in stock.