Risks to Aquatic Organisms from Use of Chlorpyrifos in the United States - Reviews of Environmental Contamination and Toxicology - page 127

Table 1 Criteria for assessing strength of the methods of toxicity studies on chlorpyrifos and its oxon
Strength of methods 1 2 3 4 5

Description of the
experimental and
procedures

Inadequately
described
or incorrect

Critical information
on methods
missing

Critical information on
methods and procedures
provided

Procedures described
so that the study
could be replicated
or spirit of GLP

Guideline study or
complete detailed
protocol or full GLP

QA/QC None Some QC (e.g.,

exposures
measured once)

More QC (e.g., exposures
measured on a regular
basis)

Robust QA/QC Full QA/QC

Transparency of data Critical data

not
provided

Summary data only Summary data with

variance characterized

Key raw data
provided

All raw data provided

Concentrations tested Only 1 conc.

tested

2 concs. tested 3 concs. Tested or fi eld

study >3 sites

4 concs. tested ≥ 5 concs. tested

Descriptors from
Klimisch et al. ( 1997 )

Not assignable Not reliable With restriction Without restrictions