Explore Innovation with Da Vinci Laboratory Solutions (DVLS)

Since 2000, DVLS has been transforming laboratories around the world with innovative and efficient chromatography solutions.

From humble beginnings in laboratory support, we have grown to be a global partner, driving efficiency and excellence in laboratories.

Located in the innovative heart of Rotterdam, Netherlands, our team of experts is committed to raising analytical standards with cutting-edge technologies.

Using the Agilent Technologies chromatography platform, we offer a range of solutions ranging from GC, LC, MS, TOC, XRF to software development.

With our global network and partnerships with leaders like Agilent, GERSTEL, VICI and XOS, DVLS is more than an option - it's your solution to advance laboratory science.

Discover how DVLS can take your laboratory beyond expectations, transforming it into a center of innovation and efficiency.

Sampling and analysis of liquefied gases



The Liquefied Gas Injector (LGI) solution configuration consists of an Agilent Gas Chromatograph (GC) in which the Liquefied Gas Injector and its controller are installed. The pressure station is used for the safe and accurate introduction of LPG samples.

The liquefied gas injector (LGI) direct injection approach is a safe alternative technique to a liquid sampling valve or manual evaporation. The LGI uses a standard GC injector needle, which is inserted into a large volume GC column injection system. Activation of the solenoid transfers the pressurized sample through the needle directly to the column. A sliding device moves the needle downward for injection and upward for purging.

LGI directly injects liquefied gas into the GC inlet to ensure safety and full transfer of impurities to the GC column. Chromatographic analysis after sample introduction is based on separation of the boiling point of impurities. The result is reported in mg/kg. The analysis of impurities in LPG is completed in 20 minutes.

applications

The DVLS Liquefied Gas Injector offers laboratories a safe, reliable and efficient GC standard for the following applications:

Oily residues and light contaminants in LPG (ASTM D7756, EN 16423);

Amines in LPG;

Benzene and toluene in LPG (ASTM D7756);

Elemental sulfur in LPG;

Nitrogen, carbon dioxide, hydrogen sulfide and hydrocarbons in (un)stabilized gas condensate;

Analysis of composition and impurities in butadiene, crude and refined C4 (ASTM D2593, D4424, D2426);

Traces of oxygenates in liquid hydrocarbon matrices (ASTM D7423, D7754);

Hydrocarbon composition of LPG (ASTM D 2163, ISO 7941).

Benefits

Safe injection of liquefied gases: LGI's direct injection approach eliminates the need for evaporation of large volumes of liquefied gas.

large volumes of liquefied gas.

High repeatability: Direct liquid injection results in excellent repeatability and avoids discrimination of high boiling point components as there is no transfer to an inlet.

Proven Technology: Since its introduction in 2010, LGI has been successfully used by a global installed base of major oil refineries.

Wide range of applications: LGI is a solution dedicated to the analysis of heavy components in light matrices, such as LPG.

Precise performance: Multiple case studies demonstrate excellent performance. Detection limits of <0.1 mg/kg for individual impurities in liquefied gases are easily achieved.

Standardized method: The LGI is one of Da Vinci's innovations and has been standardized as ASTM D7756 and EN 16423 for the analysis of oily residues in liquefied petroleum gases by gas chromatography.

DVLS Rapid Peroxide Analyzer

Peroxides pose a potential safety risk during production and storage. They also have a negative effect on fuels and fuel systems, reducing the octane rating of gasoline. To monitor trace amounts of peroxides, Da Vinci Laboratory Solutions developed the Fast Peroxide Analyzer based on flow injection analysis as a safe and fast alternative to traditional analysis methods such as ASTM D2340 and ASTM E299. Watch the video for an explanation of the system setup, followed by a demonstration of analyzing trace peroxide in petrochemical streams.

Safe and fast analysis of peroxides at ppb level

The Fast Peroxide Analyzer uses an Agilent 1260 infinity II HPLC system configured with a dedicated reaction module to automate the safe, rapid, and accurate analysis of active oxygen originating from hydrogen peroxides and other organic peroxides.

The sample is injected into the acidified iodide reagent stream and transferred to the reaction module. The peroxides present in the sample will react with the iodide to form iodine and a yellow-brown color. The DVLS Reaction Module is designed to optimize conversion to iodine. This is the same reaction that occurs in iodometric titration:

ROOR 2I- 2H → I2 2ROH

After the reaction, the iodine formed is detected using UV-VIS spectroscopy at its

ideal wavelength for iodine.~

Applications

Fast Peroxide Analyzer is based on a custom method as an alternative to:

ASTM D2340, E299

ASTM D3703, D6447

ASTM D5799

The FPA determines hydrogen peroxides and organic peroxides in:

1,3-butadiene

Alcohols and ethers

Aromatics

Aqueous matrices in process flows

Aviation Turbine Fuels

Dicyclopentadiene

Glucose

Isoprene

Olefinic hydrocarbon streams

Vinyl styrenes and pyridines

Benefits

Safe, automated alternative to traditional wet chemistry analysis methods

Wide range of applications

Excellent performance up to ppb level

Configuration based on standard Agilent HPLC modules saves bench space

Quick analysis in less than 5 minutes

Closed analysis system avoids air interference problems

DVLS Low Oxygen Analyzers



The DVLS LPG Oily Residue Analyzer determines residues in liquefied petroleum gases by gas chromatography in accordance with ASTM D7756 and EN 16423. The analyzer includes the DVLS liquefied gas injector and the pressure station developed by Da Vinci.

Sampling and analysis of liquefied gases

The Liquefied Gas Injector's direct injection approach includes the proven direct fuel injection technique used by the automotive industry to inject fuel into the automotive engine's combustion chamber. The LGI uses a standard GC injection needle, which is inserted into a large volume injection system in the GC column. Activation of the solenoid transfers the pressurized sample through the needle directly to the column. A sliding device moves the needle downward for injection and upward for purging.

To allow for representative sample injection, a pressure station is used to maintain the sample in a liquid phase during injection. The sample cylinder is installed using quick connectors. For liquid samples, the pressure station adds high-pressure nitrogen to the sample cylinder and controls the pressure and outflow. Optionally, the pressure station can also be configured for gas samples, including a vaporizer to control sample evaporation after injection. The residual sample is vented to a central waste system to ensure laboratory safety.

applications



DVLS Low Oxygen Analyzers comply with the following test methods:

Test Method Analysis

ASTM D7059 Traces of methanol in crude oil

ASTM D7423 Traces of oxygenates in C2-C5 hydrocarbon matrices and hydrocarbon liquids with BP <250°C

ASTM D7754 Traces of oxygenates in fuels for spark ignition automotive engines

UOP 960 Traces of oxygenated hydrocarbons in refinery gases, LPG and liquid hydrocarbons