The {….} –hr-acute toxicity of {test chemical} to {test species} was studied under {static/flow through} conditions.  Daphnids were exposed to {control, solvent control, and test chemical at (nominal/measured) concentration of x1, x2, x3, …… xn mg a.i./L} for {…..} hr.  Mortality/immobilization and sublethal effects were observed {daily/at test termination}.  The {….} – hour LC₅₀/EC₅₀ was {x mg a.i./L}.  The {….} – hr NOEC based on {mortality/immobilization/sublethal adverse effects}was {y mg a.i./L}.  The sublethal effects included were {provide a list of these effects}.

Based on the results of this study, {test material} would  be classified as {toxicity classification} to {species} in accordance with the classification system of the U.S. EPA.

This study is classified as [enter acceptability classification e.g. acceptable/unacceptable/ supplementary) and {satisfies/does not satisfy} the guideline requirements for an acute toxicity study with freshwater invertebrates.

Results Synopsis

Test Organism Age (e.g. 1^st instar):

Test Type (Flowthrough, Static, Static Renewal):

LC₅₀:  {…mg a.i./L}                            95% C.I. :  {… to … mg a.i./L}

NOEL:  {….mg a.i./L}                        Probit Slope:  {…….}

EC₅₀:  {……mg a.i./L}                       95% C.I.:  {… to … mg a.i./L}

Endpoint(s) Effected:  {………}