Eco-toxicological Test
Imaging Results
LemnaTec Scanalyzer

The LemnaTec Scanalyzer provides comprehensive solutions for eco-toxicological tests, which can be assessed quantitatively based on imaging results.

The LemnaCount software package provides the framework for a reliable and quantitative quantification of ecotoxicological tests in compliance with international standards. Non-mobile organisms such as duckweed are counted and – depending on the type of the test – additional parameters like colour or area/size are measured. These parameters provide a comprehensive quantitative response pattern against toxicants, more than meeting the requirements of standards. In cases where organism movement is to be assessed (e. g. daphnia mobility testing), the LemnaTrack software package offers several options, either to differentiate between moving and non-moving organisms and/or to quantify movement even in very confined vessels. In addition, size parameters can also be measured. While movement quantification is generally no feature of standardised ecotoxicity testing, it is often applied in screening tests using daphnia, mosquito larvae, nematodes, fish eggs/larvae or any other kind of small aquatic or terrestrial organisms.

In addition to image analysis, LemnaTec provides positioning inlays for the specific test vessels. Consultancy for result interpretation can also be supplied, if desired. Please contact LemnaTec for any questions, including provision of plant material, particularly for the duckweed growth inhibition test. Data is stored consistently, in accordance with quality insurance protocols, in the LemnaBase database. Raw data can be further transformed mathematically into e. g. growth rates and inhibition values by using the LemnaMiner. The results can then be reorganised into exportable files for further processing with specific statistical programmes like Toxrat.

The use of the LemnaTec ScanalyzerHTS or ScanalyzerPL allows testing in a wide range of vessels, from beakers and petri dishes to multiwell plates of up to 96 wells. In all cases backlight, top light, dark field illumination or customised light sources can be implemented.

The immense flexibility of the LemnaTec hard- and software systems represents an investment targeted at the future, even under changing requirements.