Elemental analyzer

Elemental analyzer EA 2400 IIUsing the classic Pregl Dumas method, the sample is burned in a pure oxygen environment and the gas produced by the combustion is automatically quantified. This instrument has been verified and approved on-site by thousands of laboratories. High speed microprocessor control, solid-state components, and built-in diagnostic programs endow it with outstanding performance and excellent reliability.

Overview of Element Analyzer EA 2400 I

● Integrating three analysis modes: CHN mode, CHNS mode, and O mode
Advanced combustion chamber design, capable of handling almost any type of sample
● Adopting cutting-edge chromatography for gas separation, convenient, simple, reliable, and accurate measurement
EA 2400 Data Manager analysis software, convenient for users to process data

The EA 2400 Data Manager software simplifies the data processing process, allowing users to conveniently store data and export reports. In addition, PerkinElmer provides high-quality reagents that can maximize measurement accuracy and precision.

The element analyzer EA 2400 I is different from other element analyzers in that all components of the 2400 series II CHNS/O element analyzer can be easily maintained and serviced on a daily basis.

Multiple analysis modes

The 2400 series II CHNS/O elemental analyzer has three analysis modes: CHN, CHNS, and O analysis modes. You can choose one or more analysis modes to meet the needs of the laboratory. Switching between different analysis modes only requires a few simple steps. If you choose the Column Switching Attachment (CSA), it can further improve the efficiency of switching to oxygen analysis mode.

The CHN mode is the most widely used analysis mode. The complete set of reagents we provide and the built-in combustion parameter optimization capability of the instrument enable this mode to analyze almost any type of sample. It is worth mentioning that the interfering elements such as halogens and sulfur generated by combustion can be effectively removed before the product gas enters the separation and detection system.

The CHNS mode is specifically designed for simultaneous determination of carbon, hydrogen, nitrogen, and sulfur content in organic materials.

The O mode has been upgraded and optimized through multiple generations to automatically determine the oxygen content in organic materials by thermally cracking the samples.

Element analyzer EA 2400 I upgradability

Users can upgrade the 2400 series II CHNS/O elemental analyzer at any time, adding additional analysis mode functions to meet the needs of your laboratory development.

Automatically input weight

Due to the fact that organic element analysis results are based on weight percentages, the ability to accurately weigh the sample is one of the key factors determining the quality of experimental results.

To avoid human error during weight transcription, the 2400 series II CHNS/O elemental analyzer can be equipped with various weighing balance devices to automatically read sample weight, ranging from the economical PerkinElmer AD-6 fully automatic electronic balance to other ultra micro balances. The AD-6 ultra microbalance adopts the proven PerkinElmer balance technology, which has excellent resolution and accuracy, and can provide * results.

CHN and CHNS modes

The CHN and CHNS modes are based on the traditional Pregl Dumas method, which involves burning the sample in a pure oxygen environment and automatically measuring the gases produced during combustion.

The 2400 series II CHNS/O elemental analyzer system consists of four main zones:

● Combustion zone
● Gas control area
● Separation zone
● Detection area

In the combustion zone, samples packaged in tin or aluminum small bottles are automatically injected from an integrated 60 position automatic sampler, or manually injected using a single sample automatic injector.

The sample burns and is reduced to elemental gases such as CO2, H2O, N2, and SO2 in an atmosphere containing excess oxygen and combustion reagents. You can flexibly optimize static and dynamic combustion conditions to meet the specific injection needs of your laboratory. The combustion products are then transported to the gas control area of the 2400 series II CHNS/O elemental analyzer.

The combustion products are captured in the mixing chamber of the gas control zone. Then, under precisely controlled conditions (including pressure, temperature, and volume), rapid mixing is carried out to ultimately obtain a uniformly mixed gas. By controlling the pressure, volume, and temperature of each combustion or cracking experiment, the influence of external factors on the experimental results (such as atmospheric pressure changes, altitude changes, etc.) can be minimized to the greatest extent possible. In addition, separating the combustion process of the sample from the separation and detection steps can reduce the impact of changing the combustion conditions on the separation and detection process in the same group experiment, thereby improving the accuracy and precision of the experimental results.

After the combustion product gas is homogenized, it is separated by using the pressure difference to enter the chromatographic column in the instrument separation zone. The separation method used by the EA 2400 series II instrument is frontier chromatography.

As the gas flows out, the thermal conductivity detector in the analyzer detection area begins to measure the gas. Due to the working mode of using step deviation from the carrier gas baseline signal in this detection method, it can eliminate the errors caused by other types of CHNS/O element analyzers when quantifying peak signals.

Oxygen analysis mode

PerkinElmer Elemental AnalyzerThe oxygen measurement method used is based on the classic Unter zuacher method (which includes modifications to the Oita, Conway, and Culmo methods). The sample was pyrolyzed in a helium/hydrogen (95%: 5%) mixture at 1000 ° C, and the oxygen-containing reaction product obtained was converted to carbon monoxide by platinum plating carbon reagent. Carbon monoxide and other gases are removed from interfering gases through a scrubber. Next, control, separate, and measure carbon monoxide in the same manner as described above.

Working gas

In CHN and CHNS modes, the working gases include oxygen (used for combustion of sample materials) and carrier gas (helium or argon). The use of argon gas as one of the alternative carrier gases is a design solution for this type of instrument, which ensures that the element analyzer can be operated in a more economical way in regions around the world where helium gas is difficult to use due to high prices or difficult preparation.

In oxygen analysis mode, the working gas is helium (when using a silver bottle) or a helium/hydrogen mixture (when using a tin bottle).

Optimized combustion flexibility can achieve good performance

The thorough combustion of the sample is the most critical step for successful determination, and it will affect the accuracy and precision of the final result, that is, the weight percentage of the measured element. The 2400 series II CHNS/O elemental analyzer provides advanced combustion conditions, including temperature, time, and available oxygen (in oxygen analysis mode, it is cracked gas). You can flexibly control the combustion time and oxygen consumption of samples under oxygen conditions, which can ensure that almost all types of samples are fully burned.

Gas control zone

The mechanical homogenization of product gas under controlled conditions (including pressure, temperature, and volume) is crucial for obtaining the most accurate results.

Frontier chromatography achieves high reliability

In the 2400 series II CHNS/O elemental analyzer, combustion gases can be selectively retained to generate steady-state step signals rather than peak signals (Figure 2). Compared with the CHNS/O system using peak separation method, this technology can determine combustion gases more simply, reliably, and accurately.

Experimental efficiency

The PerkinElmer elemental analyzer has a short analysis time, greatly improving work efficiency and experimental accuracy. Normally, the analysis time for standard CHN mode is 6 minutes, CHNS mode is 8 minutes, and oxygen mode is 4 minutes.

*The wake-up program can calibrate the 2400 series II CHNS/O elemental analyzer on the date and time specified by the operator. This feature allows the system to prepare itself for operation.

The 60 bit automatic sampler can operate unattended 24 hours a day. This automatic sampler has been tested and proven to exhibit exceptionally stable performance, whether in accelerated quality assurance testing or on-site laboratory certification.

Diagnostic programs can monitor whether electronic and pneumatic components are functioning properly and alert operators in the event of rare malfunctions. The programmable throttle valve can automatically reduce the carrier gas flow rate when the analyzer is in standby mode.

Element analyzer EA 2400IIconsumables

Only by using good reagents, test tubes, and sample bottles can the analyzer ensure good performance. Each PerkinElmer consumable and reagent is of high quality and specifically designed for your PerkinElmer instrument.