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AMPTS II Light - simplify the selection & pricing of substrates

The AMPTS II Light is a sister product of the AMPTS II. It is the instrument of choice for process engineers and plant operators when selecting and pricing substrates in biogas plants. The instrument is used for analysing biochemical methane potential (BMP), residual gas potential (RGP), as well as anaerobic biodegradability and specific methanogenic activity (SMA) assays for a small number of samples. All of this is performed with easy access to sampling, analysis, recording and report generation, fully integrated and automated.

  • Highly precise and accurate data
  • Significant reductions in time and labour
  • Standardisation of measurement procedures, data interpretation and reports
  • User-friendly operations with remote access
Article no: 02-0000-02



Determine a substrates true energy content

The AMPTS II Light allows users to determine the biomethane potential, anaerobic biodegradability and dynamic degradation profile of any biomass substrate. This in turn will allow users to select and price a substrate according to its true energy content of biomass, thus helping to ensure a good control of substrate economy for biogas plants.

The AMPTS II Light is a well-engineered instrument developed for biogas plant operators for the rapid evaluation of biomethane or biogas potential from various biomass substrates. The AMPTS II Light will allow operators to fully explore the biomethane or biogas potential of all available substrates and make better business decisions based upon the true value of a substrate.

Compare your results and reports

The AMPTS II Light supports all anaerobic biodegradability, biochemical methane potential (BMP) and specific methanogenic activity (SMA) test protocols, allowing for the standardisation of measurement procedures, data interpretation and reports. In addition to providing automatic gas volume measurements and data logging, significantly reducing time, labour and skill demands for these analyses, it also allows for data from different tests and operators to be easily compared. Thus, operators are able to compare all results and reports, and better monitor changes in substrate energy content over time and with each delivery.

Take control of selecting and pricing substrates

The high quality of the data obtained from the AMPTS II Light can be used to extract important kinetic information of the degradation process, which in turn can be used for selecting and pricing substrates according to their true energy content of biomass. This, in turn, will help biogas operators and substrate suppliers to better control their substrate economy, having a positive impact on overall profitability.

Outstanding real-time performance

The AMPTS II Light is an efficient analytical instrument for conducting various anaerobic batch fermentation tests including biomethane potential assays in real time, having sampling, analysis, recording and report generation fully integrated and automated. A multi-channel analyser consisting of six parallel reactors and the same number of measurement channels (flow cells) attached to a data acquisition system, allows for the real-time investigation of different samples.

Temperature and pressure compensation

The real-time temperature and pressure compensation feature of the AMPTS II Light ensures that the impact of measurement conditions can be minimised and data presentation standardised. The temperature and pressure of gas are measured every time a flow cell opens, allowing the user to derive exact kinetic information compensated for any variation of ambient temperature and pressure over time, while considering the vapour content of the gas. The normalised volumes are presented under dry conditions at 0 °C and 1 atm.

Network ready and easy access

The AMPTS II Light is designed to allow easy access from a remote location. Through the use of standard protocols and connections, the AMPTS II Light behaves like any other unit on an internal network, secured by a user-definable password. All interactions with the software are conducted through a web browser using any computer. Thus, experiment monitoring can be carried out with any kind of smartphone or tablet device.

Stable and reliable operation

The internal software of the AMPTS II Light runs on an embedded ARM CPU utilising the Linux operating system. This provides for an unmatched stability, data protection and minimum downtime. Thus, users will never experience data loss under normal operating conditions, which is always a risk with PC based solutions. Software updates issued by Bioprocess Control can be installed by the user in a controlled and easy manner.

A software application designed for anaerobic batch fermentation tests

The AMPTS II Light web-based software application has been specially designed for carrying out biomethane potential and anaerobic biodegradability tests. This application, which is easy to understand and navigate, allows users to set up an experiment, monitor its progress and download the results with little effort.

Moreover, all data is in a format that allows for easy analysis. The AMPTS II Light software application is simply a natural extension of an already universal hardware platform that has been designed for carrying out biomethane potential and anaerobic biodegradability tests.

A simple and intuitive experiment setup

The Experiment Settings feature of the software application allows users to prepare an experiment by calculating and setting up individual data for each batch test. The user enters values for the total amount of sample, volatile solids (VS) or COD content of inoculum and substrate, inoculum to substrate ratio, total reactor volume, and expected CH4 content of the produced gas. The software then automatically calculates and generates experiment guidelines for the amount of substrate and inoculum needed in each batch test.

Total control throughout an experiment

The Control feature of the AMPTS II Light software application allows users to control both the mixing of reactors and status of each batch test in real-time during an ongoing experiment. Users can control the interval, speed, rotation directions and on/off time of mechanical agitation to ensure each reactor is operated under optimum mass transfer conditions. Users can also easily start, pause and stop data acquisition of an on-going experiment at any time by means of a simple to use cell control feature, which also indicates the status of a cell at all times. Overall, this allows users to have optimal control of all reactors and batch experiments at all times with the simple click of a virtual button from the software user interface.

See your experiment in real-time and anywhere

The Graph feature of the AMPTS II Light software application and embedded web server allows users to see their experiment in real-time and from anywhere. Users can easily monitor the accumulated gas volume and flow rate of each reactor in real time by selecting and viewing only the one they wish to see. Moreover, all values displayed are, if selected, adjusted for gas solubility and/or initial headspace composition and all gas volumes normalized to 1 atmospheric pressure, 0 °C and zero moisture content. This flexibility and precision allows users to always know the status of an experiment, as well as the data being produced.

Sample incubation unit

Maximum number of reactors per system: 6
Reactor material: glass
Standard reactor volume: 2000 ml
Dimension of unit: 53 x 33 x 24 cm
Temperature control: up to 95 °C (203 °F) (precision of 0.2 °C)
Mixing in the reactor: Multifunctional agitation system with Brushless DC Motor for long-life operation. Remote speed and on/off control via AMPTS II Light software control interface. Manually adjustable direction and time interval, as well as timer function to set time periods for reversal. Modular design for low maintenance. Rotating speed range: 10-200 rpm.


Flow cell array and DAQ unit

Working principle: liquid displacement and buoyancy
Up to 6 cells running in parallel
Built-in pressure and temperature sensor
Measurement resolution: 10 ml
Detection capacity: up to 33 l cumulative gas per channel for each batch test
Measuring range for instant gas flow rate: 10 to 120 ml/min
Embedded data acquisition (maximum capacity 2×10^4 flow cell openings)
Dimension: 51 x 44 x 18 cm
Housing: plastic
High precision measuring instrument (CV≤ 1%)


Carbon dioxide absorption unit

Carbon dioxide trap bottles: 6
Volume of carbon dioxide trap bottles: 500 ml
Dimension of unit: 44 x 30 x 6 cm
Absorption liquid: 3 M NaOH with pH indicator, 80 ml per bottle (not included)
Absorption efficiency: >98%

Software & System

  • A software application specially designed for anaerobic batch fermentation tests including biomethane potential and anaerobic biodegradability tests
  • Web-based software running on an embedded server
  • On-line real-time gas flow and volume display
  • Automatic real-time pressure and temperature compensation
  • Real-time gas flow and volume normalisation
  • User-friendly guidelines for experiment setup
  • Possibility of multiplexing, allowing for simultaneous batch analysis at different startup times
  • On-line system logger for operational diagnosis
  • Power supply: 12 V DC / 5A
  • Usage: indoor

For more information, see User Manual



What Customers Say?

AMPTS helped us minimising the differences in laboratory skills between different researchers by following the same procedure for BMP testing in which manual handling is minimised, while a huge number of data points are gathered… By using AMPTS apparatus we can achieve reproducible results even with students who perform the test for the first time. We now include the AMPTS as a standardised test in our regular curriculum practical work.

Prof. Jules van Lier Delft University of Technology, the Netherlands

We use AMPTS II for both sales process and technical process optimization. The biomethane potential test performed with AMPTS II can provide useful data to demonstrate benefits of Cambi thermal hydrolysis technology for sludge pre-treatment before anaerobic digestion. This allows our clients to evaluate the possible return of investment on implementation of Cambi thermal hydrolysis treatment in wastewater treatment plants.

Mr. Stefan Sandbacka Vice President of Business Development at Cambi Group

The AMPTS II is a fantastic instrument, we use it constantly at Hanze University of Applied Sciences (The Netherlands), actually I have a presentation at the EUBCE in Stockholm where I will be presenting the talking about balancing the supply & demand of renewable Energy. Our AMPTS II has played a big part in providing us with a lot of reliable data…

Dr. Gert Hofstede Lecture at ALIFE- Research Centre Renewable Energy - ILST, Hanze University Groningen, The Netherlands saves time by enabling quick and automatic batch experiments with very little manual labour, and that it is “student proof”, because the instrument does not require long experience or training before you start using it.

Mr. Aurelien Perrault Project Manager, Sludge & Energy Innovation, Thames Water, UK

...the automation of the test minimises human errors, makes data collection more frequent than manual methods, and reduces operator time allowing more time for performing alternate tasks.

Associate Prof. Bernadette McCabe University of Southern Queensland, Australia

...the AMPTS II is the key piece of equipment for Digester Doc, as this equipment is used in determining current and potential energy values as well as in other troubleshooting activities. Digester Doc’s clients get help to identify the most suitable bacterial or mineral innoculants and feedstocks wisely, and potentially get at least 25% additional energy values out of their facilities. One of our many success stories is New Energy One, LLC in Idaho, where they were able to double production in just three months due to the AMPTS II usage.

Mr. Will Charlton President, Digester Doc, USA

...the AMPTS II significantly reduces labour demands and enables our students to more efficiently utilize time during class. The setup of the AMPTS II system is easy to follow and it's a powerful tool for demonstrating and teaching anaerobic digestion processes in both undergraduate and postgraduate courses.

Dr. Xundong Liu Tsinghua-SUEZ Environnement Environmental Science and Engineering Experiment and Practice Educational Laboratory, China

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