Oxidize your samples with confidence with the 600 OX Oxidizer

The Hidex 600 OX Oxidizer is a fully computer controlled automated catalytic combustion unit for the preparation of samples such as soil, concrete, faeces, tissue, cellulose, paint, adipose, crude oil, blood, plant material, bones, and concrete from decommissioned nuclear power plants.

The system uses industrial standard logic and mass flow controllers to manage the sample combustion process. An organic sample is combusted into carbon dioxide and water vapor at a high temperature of 900°C. The carbon dioxide is absorbed directly into the liquid scintillation cocktail and the vial is ready for instant C-14 liquid scintillation counting (LSC). In a tritium application, water vapor is condensed into a vial containing cocktail for tritium LSV measurement.

Sample Boats

Sample boats are placed on high purity quartz ladles. The Hidex 600 OX Oxidizer is compatible with both disposable and reusable sample boats.

Sample Collection

Samples are collected automatically into scintillation vials. A Teflon nozzle seals the vial and cocktail is automatically aspirated int othe vial. The samples are then ready for liquid scintillation counting.

User Safety

The user can specify a timed flow of cooling air past the ladles along with a specified time for the safety interlock on the ladle cover to protect the user from contact with the hot ladles following the oxidisation process.

Sample Loading

Up to six samples can be loaded in one go. The operator is then free to walk away and allow the instrument to continue the process unlike older manual systems which require continuous operator interaction.

Automated six samples combustion in one run for high capacity processing

The automated 600 OX Oxidizer increases tremendously the maximum sample combustion capacity per one working day compared to manual single sample oxidizers. The capacity is increased because pre-treatment of a sample, such as tissue or plant slicing and weight measurement, can be done during the automated combustion process. This is not possible with a single sample oxidizer, where the user must remain by the instrument and load the samples one by one.

Automated gas line leak test

Gas line leak test is performed automatically before every sample combustion for safe and high-performance operation. The leak test utilizes mass-flow meter based measurement and comparison of oxygen input flow and output flow at the end of the gas line.

Oxygen input flow regulation

The 600 OX Oxidizer has an oxygen input flow regulation system that improves combustion of high carbon content and rapidly burning samples requiring extra oxygen. The system creates a combustion curve containing information about the amount of oxygen consumed in the combustion process, allowing the data to be used for oxygen flow optimization.

User friendly software with easy access to the main settings

For basic use only three parameters are selected; combustion type: C-14 or H-3, number of samples and combustion time. In addition, the system has easy access to several additional settings such as combustion temperature, cocktail dosing volume and oxgen flow.

Collection into one vial of several sample combustions

The system collects 1-6 sample combustions into one LSC vial. Collection of several radiocarbon or tritium samples into one vial is useful when low activity samples such as tritium from concrete is analyzed. This enables higher radioactivity level collection into one bottle which makes the LSC measurement more accurate.

Hidex 600 OX existing users

Click on the tabs below to find out more about our customers, and how they are using the Hidex 600 OX in their laboratories.

University of Surrey, UK

Quantifying radiolabelled CECs

Hidex instruments are being used by the University of Surrey’s Applied-RadioIsotope and Environmental Laboratory (ARIEL) to research and understand the fate and behaviour of contaminants of emerging concerns (CECs). CECs are pollutants such as domestic chemicals, pharmaceuticals, and agricultural runoff detected in bodies of water.

Lead by Dr. Maya Al Sid Cheikh, the research is specifically concerned with nanoplastics, which are ubiquitous in domestic products and discharged in large quantities from industrial processes and can have devastating impacts on biodiversity, ecosystems, and food chains. Maya and her team at ARIEL are trying to trace these from origin through to dispersion in the environment and living organizms to understand how long they persist by 14C radiolabeling.

You can find out more about ARIEL's research by clicking the button below.


Corteva™ Agriscience, USA

Combustion of samples in eFate and metabolism studies

Corteva™ Agriscience is an agricultural research company based in Indianapolis, IN. Christopher Stewart is one of Corteva’s Environmental Fate Analysts who has been using the Hidex 600 OX to research the residual activity of novel active ingredients in soils, plants, and animal tissues with analysis through liquid scintillation counting after extraction. The radiolabelling of samples to be combusted in the 600 OX is done inhouse.

Explaining his work, Chris said, “My research groups are at the ground level of a study before they’re submitted for regulation to the Environmental Protection Agency or whichever governing body it may be. Once a new active ingredient has been developed, such as a pesticide or herbicide, my group performs eFate parallel to metabolism and I’m responsible for combustions."

You can find out what Chris had to say about the 600 OX and how its increased his throughput by clicking the button below.



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  • Hidex Ox Feature Video