RA-7000A

The RA-7000A measures elemental mercury, chemically referred to as Hg.

The measuring time varies between 30 and 600 seconds depending on the sample.

Traditionally, mercury is measured in aqueous samples, for example in drinking water, groundwater, seawater, wastewater, surface water or rainwater.

Find out more in the video.

However, mercury can also be measured in solids and gases.

The RA-7000A has a detection limit of 0.5 ppt up to 400 ppb

Yes, DIN E ISO 12846 regulates the determination of mercury.

The RA-7000A conforms to the following standards, among others:

• US EPA 245.1,
• US EPA 245.2,
• US EPA 7470A,
• APHA 3112,
• EN 1483,
• ISO 12846

An RA-7000A is of interest to all companies that have to comply with the waste water regulations of the legislator. These could be contract laboratories or sewage treatment plants, for example.

The RA-7000A is controlled with the RA7000AWin software, which has a user-friendly interface with a clear animated display.

DDP stands for Discrete Direct Purge and describes the process used by the RA-7000A.

This technique virtually eliminates contact between the acidic sample solution and the analyte transfer path. The elemental mercury generated by the reduction is transferred directly to the detector via a dry and inert pathway. In this way, the mercury memory effect is minimized, resulting in better reproducibility and precision.

Watch the video to find out what the mercury memory effect is.

Which autosampler is right for you depends on what and how much you want to analyze.

• SANPRA™ 3 has 80 sample positions and offers a high throughput
• SANPRA™ 5 features the auto-digestion function (standard-compliant, fully automated permanganate digestion) to enable seamless automation of mercury analysis
• SANPRA™ 7 also has the auto-digestion function and is the world’s first autosampler with 29 positions for solid samples

Our experts will work with you to evaluate which autosampler is best suited to your application.

Yes, up to 3 SANPRA units can be controlled with 1 PC.

Our impinger kit is suitable for users with lower automation requirements. It can be combined with the RA-7000A to perform simple and efficient mercury analysis for all samples.

Our experts will be happy to advise you.

Thanks to the RH gas module, gaseous elemental mercury (GEQ) can be analyzed. GEQ can be captured with a gold sand tube and can be analyzed directly with the RH gas module. Big advantage: this configuration is explosion-proof!

The standard sample size is 5ml. Optionally, it can be 20ml, 100ml and 250ml.

Whether the sample needs to be prepared depends on the module you select. SANPRA5 and SANPRA7 prepare the sample automatically. With the Impinger Kit and SANPRA3, you usually have to prepare the sample yourself.

No, no external gas supply is required.

All you need is ambient air, which is purified by the RA-7000A itself using an iodized activated carbon cartridge with a capacity of 1 g.

Of course, we will be happy to come to you and show you the appliance without obligation so that you can get to know the technology.

After delivery of your RA-7000A, our service team will be available to provide you with detailed product training. Most questions will arise during operation, 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.

You need sample containers and reagents according to the standard.