BioGas / Petroleum / Laboratory

MAX Analytical is now deploying MAX™ a patented new concept in GC-FTIR for BioGas / Petroleum / Laboratory and other applications.

GC-FTIR for BioGas, Petroleum and Laboratory Applications

MAX Analytical Technologies has been deploying FTIR gas analyzer technologies for numerous industries since 1992.  MAX Analytical is now deploying MAX™ a patented new concept in GC-FTIR for BioGas / Petroleum / Laboratory and other applications.  MAX is a rugged FTIR / GC-FTIR that is able to measure ppbv levels of VOCs, SVOCs and siloxanes for numerous analytical applications.



The concentration of siloxanes present in BioGas is critical to prevent damage to reciprocating engines or turbines when the BioGas is combusted.  Siloxanes when combusted creates SiOx (sand) which is extremely abrasive to the engine or turbine. MAX is uniquely designed to monitor and speciate siloxanes in BioGas.  MAX through its patented design is able to maintain a constant calibration for each siloxane minimizing the need for costly and time consuming calibrations.

Siloxanes that are routinely monitored by MAX in BioGas include:


Hexamethyldisiloxane (L2)

Hexamethylcyclotrisiloxane (D3)

Octamethyltrisiloxane (L3)

Octamethylcyclotetrasiloxane (D4)

Decamethyltetrasiloxane (L4)

Decamethylcyclopentasiloxane (D5)

Dodecamethylpentasiloxane (L5)

Dodecamethylcyclohexasiloxane (D6)


MAX has the unique capability of monitoring oxygenated and aromatic compounds in a petroleum matrix.  A majority of hydrocarbons in gasoline are aliphatic hydrocarbons and they absorb in a spectral region that does not interfere with aromatics or oxygenates.  This allows MAX to monitor these compounds easily without the need for complex GC x GC methods.  The following ASTM methods can be easily performed using MAX.

ASTM D-4815

ASTM D-3606

ASTM D-5501

Due to its unique design, MAX can handle the high concentrations present in petroleum samples and never require calibration by the user.  The MAX design has a proven constant calibration that can be transferred from instrument-to-instrument.  No other GC technology on the market has a constant instrument-to-instrument calibration capability.


MAX provides the analytical laboratory a complementary technology to GC and GC-MS that allows the user to measure inorganics and organics in liquid samples, TDTs, canisters and bags.  MAX has both FTIR and GC-FTIR modes that allow an air laboratory the ability to measure more compounds than any GC based analyzer currently on the market.  In the FTIR mode, low ppm inorganics (NH3, HCl, HF, CO, O3, etc) and organics (VOCs) can be monitored and speciated in a matter of minutes.  In the GC-FTIR mode, low level ppbv concentrations of VOCs and SVOCs can be measured without the possibility of damage to a GC-MS when a higher concentration is present.  MAX also has constant instrument-to-instrument calibrations in both modes that can range from 0 to 1,000,000ng (GC-FTIR) or 0 – 1,000 ppm (FTIR).  This allows the user to spend more time analyzing samples than calibrating the instrument.

For any lab that routinely does gas analysis with a GC-MS, MAX would provide a very valuable complementary analyzer that can confirm samples are not too concentrated for GC-MS or measure for compounds not measurable by GC-MS. 


For more information on our FTIR gas analyzer technologies for stationary source emissions testing contact us.