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Vapor Pressure Testing at its best

The versatile ERAVAP allows vapor pressure testing of e.g. fuels, solvents, fragrances or aqueous solutions. It measures in full compliance with the latest standards such as ASTM D5188, D5191, D6378, EN 13016, and many more using a single analyzer. With excellent precision and measuring stability it covers the pressure range from 0 kPa to 1000 kPa.


Correlation to

    ASTM D323
  • ASTM D1267
  • ASTM D2533
  • ASTM D2879
  • ASTM D4953
  • ASTM D5190
  • ASTM D5482

360° View


Globally well-known Performance

ERAVAP is a compact, highly precise, yet easy to use vapor pressure tester. A small footprint, true portability even with an attached 10 port autosampler and its rugged aluminum casing make it the ideal choice for stationary and mobile laboratories.
Not only does the California Air Resource Board (CARB) rely on the unrivaled precision of ERAVAP but recently the U.S. EPA also decided to use ERAVAP as their reference instrument for vapor pressure testing. The very same instrument is field deployed by the US military in mobile laboratories around the world.

Improved repeatability of ERAVAP for pentane and cyclopentane

Superior repeatablility

Recent improvments in the design of ERAVAP led to an improved repeatablility and reproducibility for vapor pressure testing. With a repeatability of only r ≤ 0.15 kPa and reproducibility of R ≤ 0.50 kPa for ASTM D5191 and D6378 reference materials at 37.8 °C (100 °F) it clearly outperforms the precision statements of its own ASTM standards. Using ASTM D6378 instead of D5191 for vapor pressure testing eliminates any operator bias caused by incorrect sample preparation needed only for ASTM D5191.

Please reference the graph for latest repeatability measurements of the latest ERAVAP generation using cyclopentane and pentane at 37.8°C (100 °F).

Oil reservoir of ERAVAP that automatically lubricates all moving parts of the analyzer

Outstanding Design

With its quality-centric design ERAVAP was not only designed for highest precision but also for highest durability. The self-lubricating piston and the powerful Peltier elements are the instrument’s centerpiece. It is built for highest sample throughput rates at minimum maintenance. Furthermore, recalibration of the instrument can be performed without any special tools or disassembling the unit.

Eralytics patent pending Pure SamplingTM technology minimizes the possiblity of cross contamination between measurements.


Range of Applications

The area of applications ranges from freely programmable test methods for R&D labs to push-button simplicity. With its extended temperature range from -20 °C to 120 °C (4 °F to 248 °F) and V/L ratios ranging from 0.02/1 to 100/1 it can cope with the most difficult measurement scenarios as well as with routine analysis. Vapor pressure testing of up to 1000 kPa is possible. In combination with a 12 V DC adapter it can be even run by a vehicle battery, allowing vapor pressure testing in the field.

With its innovative design ERAVAP is capable of measuring gasoline, oxygenated gasoline as well as any other solvent or even polymers. It is used worldwide by refineries, terminals, oil and pipeline companies as well as authorities and independent laboratories.

high viscous lubricating grease covering parts of a bearing

High Viscosity Module

ERAVAP already covers a wide range of applications with its standard configuration. However, if the viscosity of the samples increases it gets more difficult to draw them into the measurement cell. In such cases heating up the sample prior to introduction helps. During the measurement the sample sitting in the tubes will cool down potentially blocking them after the measurement.

ERAVAP’s new high viscosity extension heats the inlet and outlet as well as all transfer tubes up to 70°C. The temperature is regulated to a defined value set in the measurement menu of the instrument. Using this new module even further extends the applicability of ERAVAP to a new range of samples.

  • ERAVAP showing the measurement menu where all releavant information for the vapor pressure measurement can be entered
  • ERAVAP running a vapor pressure measurement of a gasoline sample
  • ERAVAP displaying the result of a vapor pressure measurement of gasonline

Measurement Procedure

Beside sample preparation according to the relevant standards, just four easy steps are needed for high quality vapor pressure testing:

  • Enter sample ID and operator name
  • Select the measurement standard and add additional parameters when necessary
  • Place the sample beside the analyzer and put the tubing inside the sample
  • Press the RUN button

The instrument now visualizes the measurement procedure on the screen showing the sample and piston position, as well as the temperature and pressure within the measurement cell. The resulting vapor pressure is calculated according to the relevant standards and displayed.

Brandnew: ERAVAP Feature Video

  • Unmatched temperature range, precision, speed and versatility
  • Temperature range from -20 °C to 120 °C (-4 °F to 248 °F)
  • Large variety of international standards and correlation methods available
  • Pure SamplingTM valve technology minimizes any cross-contaminations
  • On-screen quality control mode
  • Easy measurement of gasoline, crude oil, LPG and solvents

Operation Video

Watch this video to get an overview on the sample handling and measurement procedure of ERAVAP.

Technical Specifications

Available Test Methods
ASTM D5188, D5191, D6377, D6378, D6897, EN13016-1, EN13016-2, EN13016-3 ,IP394, IP409, IP481, JIS K2258-2, SHT 0769, SHT 0794, SNT 2932, GOST 52340
freely programmable methods
EPA / CARB / US Military & NATO reference methods, TVP measurement
VP-V/L Speed TestTM – Combined T(V/L) and vapor pressure measurement
Correlation to...
ASTM D323, ASTM D1267, ASTM D2533, ASTM D4953, ASTM D5190, ASTM D5482, ASTM D2879 (optional low vapor pressure extension)
Fuel Specifications
ASTM D910, ASTM D1655, ASTM D1835, ASTM D4814, ASTM D6227, ; EN 228
Temperature Range
0 °C to 120 °C (32 °F to 248 °F) with Peltier technology. No external cooling is required.
-20 °C to 120 °C (-4 °F to 248 °F) with additional low temperature upgrade (EV01-COOL). External cooling is required.
Extrapolated range: -100 to 300 °C (-148 °F to 572 °F)
Temperature Stability
0.01 °C (0.02 °F)
Pressure Range
0 kPa to 1 000 kPa (0 psi to 145 psi)
Pressure Resolution
0.01 kPa (0.0014 psi)
Vapor / Liquid Ratio
Variable from 0.02/1 to 100/1
Single point, multi-point and curve measurements
Repeatability: r ≤ 0.15 kPa (0.022 psi) / Cyclopentane @ 37.8°C
Reproducibility: R ≤ 0.50 kPa (0.073 psi)
Available Extension Modules
EV01-COOL: Low temperature module (-20°C - 120°C / -4°F - 248°F)
EV01-VISC: High viscosity module (Heated inlet and outlet up to 70°C / 158°F)
EV01-LOW: Low vapor pressure module (r = 0.1 kPa; pressure resolution = 0.01 kPa)
Auto Sampler
Optional 10-position auto sampler – directly attached

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