AOX sample preparation modules

Your advantages

3 modules available: AOX enrichment30, 5-channel Ad module and SA-200 to suit your requirements

Standard-compliant mode of operation: by dispensing with peristaltic pumps and valves in the sample path, the sample is passed over the column at 3 ml per minute and particles cannot become trapped in the valve or be carried over into the next sample

For different parameters: for AOX as well as AOF, AOCl, AOBr and AOI for subsequent determination using combustion ion chromotography (c-IC)

Compliance with standard norms: Full conformity to EN ISO 9562 & LAWA P5 leaflet, DIN 38409 and DIN 38414

Resource protection

Low follow-up costs: the parts are very durable thanks to high-quality materials.

Durability & minimal use of resources: thanks to the robust design, there is less wear and tear and parts rarely need to be replaced

Easy handling

Possible samples: Water, waste water, sewage sludge

Concentration: as substances are usually present in very low concentrations and are otherwise undetectable

Flexible software: for installation on your own PC and option to correct input errors

Easy cleaning and maintenance: thanks to robust design

A wide variety of applications: for example for

Contract laboratories
Sewage treatment plants
Industrial companies that discharge (waste) water

Our service for you

Comprehensive training: we take over the induction of your employees

Also there for you after the purchase: many questions only arise during work. We are there for you for all questions about the device and your measurements

Application

Simple and inexpensive sample enrichment or filtration

For sample preparation for AOX analysis(AOX-400), different modules with standard-compliant operation are available depending on the method and number of samples, which can also be used for automatic sample preparation for AOF, AOCl, AOBr and AOI for subsequent determination using c-IC (AQF-5000).

AOX enrichment module30:

Automates sample preparation according to the column method for 30 samples
Available with SPE variant (Solid Phase Extraction) or variant with two channels working in parallel
Automated, upstream SPE can clean salt-contaminated samples
No supervision required during running time, can also run overnight
Column method
for water, waste water
with washing station for self-cleaning

5-channel AD module:

Parallel, semi-automatic sample preparation
5 samples per hour
works with syringe pumps (instead of peristaltic pumps) and thus complies with the standardized enrichment rates of 3 ml per minute even with back pressure
Use for individual samples, small series or for parallel processing of large series
Freely selectable volumes for enrichment and rinsing
Column method
for water, waste water

SA-200 module:

Simple and robust filtration station for sample processing using the shaking method
filters shaking AOX samples onto ceramic carriers, which can be measured directly in the AOX-400
Ceramic carriers have a long service life
High cost savings and simplified handling thanks to ceramic filters
for sewage sludge

Who needs sample preparation modules?

Companies that want to carry out AOX or AOF measurements. The substances to be analyzed are usually contained in the sample in very low concentrations and cannot then be measured. Sample preparation is used to carry out a so-called concentration.

Is there a safety risk when handling samples?

Yes, there is a risk when working with wastewater, sewage sludge and soil samples, as it is never known exactly what substances and materials they contain.
However, the finished samples on the carbon columns are virtually harmless to the user. Nothing outgasses from the samples as the hazardous substances are bound in the water. Nevertheless, always wear personal protective equipment.

Standard methods

The enrichments are fully compliant with all relevant standard procedures for AOX, AOF, AOI, AOBr and AOI, among others:

EN ISO 9562 & LAWA P5 leaflet
DIN 38409
DIN 38414

Measuring method

Measuring method

Column method: enrichment of the samples on activated carbon columns
SPE method: enrichment, washing and elution via SPE cartridges, subsequent enrichment on activated carbon columns
Shaking method: filtration of the samples shaken with activated carbon via ceramic frits

Procedure of the modules

The AOX enrichment30 and the 5-channel AD module use the column method, the SA-200 module uses the shaking method.

Function Column method

The sample is aspirated and transferred to the carbon and then washed with nitrate solution.

Shaking method function

Filtration of the samples shaken with activated carbon via ceramic frits.

Parameters / elements

AOX, AOF, AOCl, AOI, AOBr

Details

AOX enrichment module30

Automatic AOX enrichment on activated carbon in accordance with legally prescribed EN ISO 9562 or DIN 38409:

Homogenization of samples containing solids
Adsorption of the sample on activated carbon
Washing with nitrate wash solution

The simple design with few mechanical parts and no complicated valve technology ensures high operational readiness and reliability. The strictly contamination-free sample application is of great importance for precise AOX analysis. The AOX enrichment30 prevents the sample from coming into contact with the valve or syringe. This reduces the probability of carry-over or cross-contamination. The AOX enrichment30 cleans itself after each sample (2.5 to 50 ml) by means of variable wash volumes with nitrate wash solution.

The speed of sample processing can be doubled with a second enrichment channel.

AOX enrichment30 can also be automated for samples with a high salt content. Compared to manual processing, this saves considerable time and increases the productivity of your laboratory. The AOX enrichment30-SPE performs AOX enrichment on activated carbon for water with high levels of inorganic halogens (> 1 or 5 g/l) in accordance with DIN ISO 9562 / DIN 38409-H22. This system is also available with two parallel enrichment channels.

The following steps are automated:

Conditioning the SPE cartridge with methanol and water
Adsorption of AOX samples with high salt contents on styrene-divinylbenzene resin
Washing the cartridge with nitrate wash solution
Elution with methanol and water
Adsorption on activated carbon columns
Washing with nitrate wash solution

Key data of the AOX enrichment30 module

DIN and EN-compliant operation
Analysis of water, wastewater and sewage sludge
Cross-contamination-free sample handling
Cost-effective consumables / low operating costs
Robust, space-saving design with few mechanical parts and no complicated valve technology
Strictly sequential sample processing with contamination-free sample application
Sample and wash volume freely selectable (25 to 2500 ml)
Large number of samples (up to 30 samples)
Memory function to safeguard the measurement in the event of a power failure
Enrichment volume 5 to 100 ml (preset 100 ml)

Accessories

FAQ

For which companies is sample preparation suitable?

For companies that want to carry out AOX or AOF measurements. The substances to be analyzed are usually contained in the sample in very low concentrations and cannot then be measured. Sample preparation is used for so-called concentration.

For which sum parameters can I use the enrichment modules?

For AOX, AOF, AOCl, AOI and AOBr.

Can I view and test the module before I buy it?

Of course, we will be happy to come to you and show you the module so that you can get to know the technology.

I have never worked with the device before. How can I learn how to work with the sample preparation modules?

Once your module has been installed, our service team will be available to provide you with detailed product training. Most questions will arise as you work, so we will also be able to help you with any questions that arise at a later date – at your premises or flexibly via an online meeting.

Is any additional material required?

Yes, you need activated carbon columns and an analyzer (e.g. AOX-400 or AQF-5000).

What methods of sample enrichment are available?

Our modules work either with the column method or with the shaking method.

How are the modules controlled?

The modules are controlled via software that you can simply install on your existing PC.

Which standard does the sample preparation comply with?

AOX = EN ISO 9562 & LAWA P5 leaflet

EOX = DIN 38409, DIN 38414

What is special about the a1 modules?

We do not use peristaltic pumps, which make it very difficult to work in compliance with the standard. According to the standard, the water should be passed over the column at a rate of 3 ml per minute. Due to the particle load of the samples, more powerful pumps are required to deliver the required volume flow. Another advantage is that we have no valves in the sample path. Particles can therefore not get stuck in the valve or be carried over into the next sample. Ceramic filters instead of the polycarbonate filters often used also make handling much easier and you save costs as the ceramic filters are much more durable.

Analysis systems

Containment systems

PFAS measurement with AQF-5000

AOX sample preparation modules

Enrichment modules and rapid filtration

Your advantages

Resource protection

Easy handling

Our service for you

Application

Measuring method

Details

Accessories

FAQ

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