For evaluators & procurement
What a technical reviewer or purchasing office needs to assess CETIS™ (Comprehensive Environmental Toxicity Information System) and approve it: the methods and validation behind the results, an honest view of cost, and the facts to support a procurement decision.
For your technical reviewer
CETIS is built for whole effluent toxicity (WET) and ecotoxicology analysis. These are facts a technical reviewer can verify:
Method coverage
More than 40 parametric and non-parametric hypothesis tests, 41 non-linear regression models, five OECD regression models, and emulation of the U.S. EPA Probit, ICPIN, and TSK programs, all in one application.
Validation
Every statistical procedure is validated against R or the EPA’s published programs. Results are judged identical to the sixth significant figure or better against EPA Probit, SAS, and S-Plus.
Regulatory methods
Decision-tree logic applies the published U.S. EPA, Environment Canada (2005), and OECD methods for your jurisdiction, including WET review and test acceptability criteria.
One integrated system
Test setup, statistical analysis, a structured multi-user database, quality-control charting, and regulator-ready reporting in one validated application, instead of a chain of spreadsheets and standalone programs.
System requirements
CETIS runs on Windows with Microsoft Access 2016 or later, or the free Access runtime. View full requirements →
The realistic alternative to CETIS is usually not one competing product; it is a chain of separate tools. A factual comparison:
| Capability | Assembled from separate tools | CETIS |
|---|---|---|
| Statistical method set | R packages or the EPA standalone programs (Probit, ICPIN, TSK), selected and run one test at a time. | More than 40 hypothesis tests, 41 regression models, and EPA, Environment Canada, and OECD methods in one application. |
| Method selection by jurisdiction | Chosen by hand against each agency’s current guidance. | Decision-tree logic applies the published EPA, Environment Canada (2005), and OECD methods, with test acceptability criteria. |
| Data management | Spreadsheets, typically one file per study. | A structured multi-user database. |
| Quality-control charting | Built separately, if at all. | Built in. |
| Reporting | Assembled by hand from each tool’s output. | Regulator-ready reports generated from the analysis. |
| Validation and transcription | Each tool validated on its own; data re-entered between them. | One validated application with no transcription between steps; results judged identical to the sixth significant figure or better against EPA Probit, SAS, and S-Plus. |
For your manager or budget holder
Buy an indefinite license once or subscribe by the year. Every license includes one free year of support and a PDF manual; year-2 support renewal is quoted separately.
Estimate your own effort (optional)
These are your own assumptions, not figures we supply. For reference, labs have reported that CETIS takes less than one-tenth the time of traditional solutions to input and analyze toxicity data.
What does support cost after the first year?
Every license includes one free year of support and a PDF manual. After that, support renewal is quoted separately to your seat count; for an indefinite license the renewal is optional and the license itself is yours to keep.
Is CETIS from a stable vendor?
Tidepool Scientific has published biostatistical software for environmental toxicology since 1992. CETIS has been in use in labs since 2005.
For your purchasing office
Your purchasing office makes its own sole-source determination, in its own words. The points below are the facts behind it.
Most agencies and labs buy CETIS sole-source because no other tool implements the WET statistical method set the same way. If your permits require these methods, your office can document the facts below:
You can assemble the same workflow from R or the EPA standalone programs plus spreadsheets, but that splits validation across several tools and adds manual transcription between them.
How to proceed
Technical reviewer
See the full method library and the system requirements in detail on the product page.
Explore the methods →Manager or budget holder
Size first-year and ongoing cost with the worksheet above, then copy the summary for your approval request.
Compare editions →Purchasing office
Request a formal quote, or ask about license terms and supporting documentation for your file.
Request a quote →