The eraspec X is the world’s most compact laboratory-grade mid-FTIR fuel analyzer. With a single button press, eraspec X provides a detailed fingerprint of gasoline and diesel fuels using just 3 mL of sample.
Its high-performance, all-metal housing makes eraspec X especially ideal for ultra-fast measurements in mobile laboratories or directly in the field, while still delivering laboratory-level precision.
Product Image
Image Credit: eralytics GmbH
Standards
ASTM D5845, ASTM D6277, ASTM D7806, EN 238, EN 14078
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FTIR Fingerprinting of Fuels with Lab-Grade Precision
eraspec X is an ideal solution for FTIR fuel fingerprinting, offering a detailed assessment of fuel composition and quality, including measurements of aromatics, oxygenates, and FAME.
It surpasses GC methods in cost efficiency, analysis speed, and ease of operation, while maintaining full analytical capability.
Image Credit: eralytics GmbH
Durable and Portable with Automated Reference Measurements
eraspec X is a laboratory-grade mid-FTIR spectrometer housed in a portable, rugged aluminum enclosure, making it well-suited for on-site fuel analysis. Whether analyzing gasoline or diesel, eraspec X delivers fast, dependable results in both laboratory and field environments.
The instrument is factory-calibrated and includes an integrated reference cell for fully automated reference measurements. The entire measurement process is automated and requires only 3 mL of sample. In under one minute, eraspec X produces a detailed fingerprint of gasoline and diesel fuels.
Image Credit: eralytics GmbH
Simple Analysis with Special Fuel Modules
With its modular design, analyzing gasoline and diesel fuels becomes a routine task. Dedicated modules enable the detection of benzene (EN 238) and FAME (EN 14078), while advanced modules are available for measuring fuel ethanol and methanol. The eraspec X automatically determines the concentrations of all relevant fuel components and displays the results immediately.
In addition, eraspec X can be equipped with optional chemometric models that evaluate measured spectra to derive key fuel parameters, such as RON, MON, DVPE, cetane number, and distillation and evaporation fractions, eliminating the need for complex, time-consuming analytical methods.
Available Fuel Modules
eraspec X comes in the following modules:
- Gasoline module: (ASTM D5845, D6277)
- Diesel fuel module: (ASTM D7806)
- EU Benzene module: (EN 238)
- EU FAME module: (EN 14078)
- Fuel methanol module
- Fuel ethanol module
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Module Parameters
Gasoline
Gasoline Substances Module. Source: eralytics GmbH
| Aromatics2 |
Range |
| Benzene |
0 – 10 Vol % |
| Toluene |
0 – 20 Vol % |
| o-Xylene |
0 – 100 Vol % |
| m-Xylene |
0 – 100 Vol % |
| p-Xylene |
0 – 100 Vol % |
| Ethylbenzene |
0 – 100 Vol % |
| Propylbenzene |
0 – 100 Vol % |
| 4-Ethyltoluene |
0 – 20 Vol % |
| Pseudocumol |
0 – 100 Vol % |
| Mesitylene |
0 – 100 Vol % |
| Naphthalene |
0 – 10 Vol % |
| All other Aromatics |
0 – 20 Vol % |
| Oxygenate Parameters2 |
Range |
| MTBE |
0 – 20 Vol % |
| ETBE |
0 – 25 Vol % |
| TAME |
0 – 25 Vol % |
| TAEE |
0 – 20 Vol % |
| DIPE |
0 – 20 Vol % |
| Methanol |
0 – 15 Vol % |
| Ethanol |
0 – 100 Vol % |
| tert-Butanol |
0 – 25 Vol % |
| Dimethylcarbonate (DMC) |
0 – 15 Vol % |
| Nitromethane |
0 – 10 Vol % |
| All other Oxygenate |
0 – 15 Vol % |
| Sum Parameters |
Range |
| Total Aromatics1 |
0 – 80 Vol % |
| Total Olefins1 |
0 – 80 Vol % |
| Di-Olefins2 |
0 – 20 Vol % |
| Total Oxygenates2 |
0 – 25 Vol % |
| Total Oxygen2 |
0 – 12 m % |
| Total Anilines2 |
0 – 25 Vol % |
| Esters2 |
0 – 30 Vol % |
| Saturates |
0 – 100 Vol % |
| Octane Boosters2 |
Range |
| MMT (100 µm-cell) |
20 – 10000 mg/l |
| CMT (100 µm-cell) |
20 – 10000 mg/l |
| Manganese (by MMT) |
5 – 2500 mg/l |
| DCPD (Dicyclopentadiene) |
0 – 15 Vol % |
| Anilines2 |
Range |
| N-Methylaniline |
0 – 15 Vol % |
Optional: Gasoline Properties Module. Source: eralytics GmbH
| Properties1 |
Range |
| Research Octane Number (RON) |
70 – 110 |
| Motor Octane Number (MON) |
60 – 105 |
| Anti Knock Index (AKI) |
65 – 107 |
| RVP & DVPE |
35 – 105 kPa |
| Distillation fractions |
IBP, T10, T50, T90, FBP |
| Evaporation fractions |
E70, E100, E200, E300, E150 |
Easy addition of unlimited user-defined properties.
1 … The range and repeatability for all correlated properties depend on the used database.
2 … Lowest concentrations correspond to the limit of detection (LOD), all concentrations in Vol % and wt%.
Diesel
Diesel Substances Module. Source: eralytics GmbH
| Parameters |
Range |
| Total Aromatics1 |
0 – 80 Vol % |
| Polynuclear Aromatics (PNA)1 |
0 – 80 Vol % |
| Cetane Improver (2-EHN, IPN)2 |
50 – 20 000 mg/l |
| Dimethoxymethane (Methylal)2 |
0 – 20 Vol % |
| Biodiesel (FAME, FAAE)2 |
0 – 100 Vol % |
| Vegetable Oil2 |
0 – 65 Vol % |
Optional: Diesel Properties Module. Source: eralytics GmbH
| Properties1 |
Range |
| Cetane Number |
20 – 80 |
| Cetane Index |
20 – 80 |
| Distillation fractions |
T10, T50, T85, T90, T95 |
| Evaporation fractions |
E250, E350 |
| CFPP |
-39 – 6 °C |
| Visco40 |
2.1 – 3.8 cSt |
Easy addition of unlimited user-defined properties.
1 … The range and repeatability of all correlated properties depend on the database used.
2 … Lowest concentrations correspond to the limit of detection (LOD), all concentrations in Vol % and wt%.
Jet Fuel
Source: eralytics GmbH
| Properties1 |
Range |
| Freezing Point |
-80 – -20 °C |
| Flash Point |
-20 – +100 °C |
| Smoke Point |
0 – 1000 mm |
| Viscosity at 20 °C |
1.2 – 2.1 mPas |
| Viscosity at -20 °C |
0 – 10 mPas |
| Distillation fractions |
IBP, T10, T50, T65, T85, T90, T95, FBP |
| MSEP |
50 – 100 % |
| Parameters |
Range |
| Total Aromatics1 |
0 – 80 Vol % |
| FAME concentration2 |
0 – 6 Vol % |
| Polynuclear Aromatics (PNA)1 |
0 – 10 Vol % |
Easy addition of unlimited user-defined properties.
1 … The range and repeatability of all correlated properties depend on the database used.
2 … Lowest concentrations correspond to the limit of detection (LOD), all concentrations in Vol % and wt%
Fuel Ethanol / Methanol
Fuel Ethanol. Source: eralytics GmbH
| Parameter2 |
Range |
| Ethanol |
0 – 100 Vol % |
| Water |
0 – 100 Vol % |
| Methanol |
0 – 15 Vol % |
| Denaturant |
0 – 100 Vol % |
Fuel Methanol. Source: eralytics GmbH
| Parameter2 |
Range |
| Methanol |
0 – 100 Vol % |
Easy addition of unlimited user-defined properties.
2 … Lowest concentrations correspond to the limit of detection (LOD), all concentrations in Vol % and wt%
Technical Specifications
Source: eralytics GmbH
| . |
. |
| Available Test Methods |
ASTM D5845, D6277, D7806, EN 238, EN 14078 |
| Spectrometer Type |
Patented mid-FTIR interferometer
Laser and temperature-controlled design |
| Measurement Cell |
20 μm and 100 μm path length cell, reference cell
Optimized triple position cell design, incl. fully automated reference measurement |
| Calibration |
Factory calibrated |
| Measurement Time |
< 60 seconds, warm-up time 30 seconds |
| Sample Volume |
3 mL with a syringe |
| Gasoline |
14 Aromatics incl. Benzene (ASTM D6277), 18 Oxygenates incl. Ethanol & Methanol
Total Aromatics, (Di)Olefines, Oxygens and Saturates (Anilines, Esters)
Optional: RON, MON, Distillation, Evaporation, and RVP |
| Diesel |
Total Aromatics, Polynuclear Aromatics, Cetane Improver, Benzene, FAME (ASTM D7806), Vegetable Oil
Optional: Cetane Number, Cetane Index, Distillation, Evaporation, CFPP, Viscosity |
| Interfaces |
Built-in PC with Ethernet, 5x USB-A, 1x USB-B, and RS232 interfaces; Wifi via USB dongle
Direct LIMS connectivity via LAN and output to printer or PC
Optional input by keyboard, mouse, and barcode reader |
| Display |
Industry-proven multilingual color touchscreen |
| Remote Control |
Remote service capability via Ethernet interface |
| PC Software |
erasoft RCS – remote control Windows® software for multi-instrument remote control, convenient data transfer, viewing spectra, and result analysis |
| Result Database |
50,000+ detailed test reports and spectra storable in internal memory |
| Alarm Tracking |
All alarm messages are stored in the database together with the results |
| Power Requirements |
Auto-switching 85 – 264 V AC, 47 – 63 Hz, max. 150 W (multi-voltage power supply)
Field application: 12 V DC (vehicle battery) adapter available |
Dimensions / Weight
(W × D × H) |
18.0 × 28.6 × 29.3 cm (7.1 × 11.2 × 11.5 in) / 7 kg (15.4 lb) |