Envirolyte’s chronic toxicity information summarises a 21-day study using Daphnia magna to evaluate mortality and reproduction during exposure to two tested anolyte types, described as Anolyte medium and Anolyte strong.
The study summary attributes the work to the Institute of Chemistry of Tallinn Technical University, Estonia. It reports observations of mortality, reproduction, immobility, size and weight and concludes that no chronic effects were observed for either tested anolyte type under the conditions of the study.
These findings should be interpreted within the tested conditions rather than as a general statement that anolyte is non-toxic in every application. Concentration, dilution, exposure time, water chemistry and discharge conditions remain relevant when assessing environmental exposure. The full chronic toxicity documentation can be requested from Envirolyte for detailed technical or regulatory review.
Chronic Toxicity Study Scope
The available study summary describes the organism, duration, primary endpoints and additional observations used to evaluate chronic effects.
Swipe horizontally to view the full table.
| Study parameter | Reported information |
|---|---|
| Study organisation | Institute of Chemistry of Tallinn Technical University, Estonia |
| Test organism | Daphnia magna |
| Clone origin | Finnish origin (EF), from the North Savo Regional Environmental Centre in Kuopio, Finland |
| Age at the start of testing | Five days old |
| Test duration | 21 days |
| Primary endpoints | Mortality and reproduction |
| Additional observations | Immobility, size and weight at the endpoint of the experiment |
| Tested anolyte types | Anolyte medium and Anolyte strong |
Reported Results of the 21-Day Study
The published study summary reports the following observations:
- The maximum observed mortality was 6.7%, corresponding to one animal out of 15 in one test vessel.
- No mortality or immobility was reported in the other tests.
- The summary reports no significant difference in 21-day Daphnia magna mortality between the tested water and the control.
- Reproduction calculations included surviving organisms, and no significant differences in reproduction were reported between the tested media.
- No observed differences in size or weight at the experiment endpoint were reported between the tested samples and the control.
- The reported conclusion was that no chronic effects were observed for Anolyte medium or Anolyte strong under the conditions of the study.
How to Interpret Chronic Toxicity Data
Chronic toxicity testing evaluates effects that can develop during longer exposure periods, including survival and reproduction. It provides different information from an acute toxicity test, which examines effects over a shorter exposure period.
The reported results apply to Daphnia magna and the conditions evaluated in this study. They should not be used as a universal safety statement for other organisms, concentrations, exposure patterns or environmental conditions.
For an actual water-treatment or discharge assessment, relevant factors can include anolyte concentration, dilution, pH, free available chlorine, organic load, exposure time, water chemistry, receiving environment and applicable local requirements.
Applications Where Chronic Toxicity Information May Be Relevant
Chronic toxicity information can support environmental and technical evaluation when anolyte use may involve aquatic exposure, treated-water discharge or repeated water-treatment operations. Relevant applications can include:
- drinking water and process water disinfection;
- agricultural and livestock water treatment;
- greenhouse and horticulture applications;
- cooling towers and industrial water systems;
- wastewater and effluent-related applications;
- aquaculture, shrimp farming and water reuse projects;
- food and beverage processing hygiene systems.
Required dilution, monitoring and discharge controls should be established for the individual project rather than derived from the chronic toxicity summary alone.
Related Testing and Compliance Information
Chronic toxicity information is most useful when reviewed together with other evidence relevant to the intended application:
Frequently Asked Questions
The reported chronic toxicity study used Daphnia magna, an aquatic organism widely used in ecotoxicological testing.
The reported study lasted 21 days and evaluated mortality and reproduction, with additional observations of immobility, size and weight.
The published summary reports a maximum mortality of 6.7%, no significant difference in mortality or reproduction compared with the control, and no observed differences in size or weight at the experiment endpoint. Its reported conclusion was that no chronic effects were observed for Anolyte medium or Anolyte strong under the conditions of the study.
No. The results relate to Daphnia magna and the conditions evaluated in the study. Environmental assessment must also consider concentration, dilution, exposure time, water chemistry, the receiving environment and applicable requirements.
No. Chronic toxicity testing evaluates effects over a longer exposure period, including endpoints such as survival and reproduction, while acute toxicity testing evaluates shorter-term effects.
Yes. Envirolyte provides available chronic toxicity documentation and related technical information on request for project evaluation, tenders and regulatory discussions.
Request Chronic Toxicity Documentation
Envirolyte can support customers, distributors and OEM partners with available chronic toxicity information, technical documentation and project-specific data for evaluation of anolyte systems.
