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New Environmental Technology - Water Test is More
Accurate, Cost Effective and Faster

LONG ISLAND, New York August 14 --- Environmental Toxicology Laboratory
(ETL) is pleased to announce the submission of a patent application that
covers newly developed aspects of the Tetramitus Assay. ETL is a research
and development laboratory that has developed and patented a rapid, cost
effective and highly accurate method of detecting, measuring and monitoring
toxicity in water and other biological samples. As ETL continued to refine
and further develop this important and innovative environmental technology,
advancements to the science of the assay necessitated further patent
protection. ETL's second patent covers use of the Tetramitus Assay as a
Whole Effluent Toxicity (WET) test as well as a means of screening for
spoilage in food. Whole particle toxicity and the use of several other
species of flagellates is also covered in the new patent.

ETL's Tetramitus Assay measures the effects of toxic agents on Tetramitus
rostratus, a protozoan organism. When a sample containing toxic agents is
added to a Tetramitus culture, cell division is inhibited in direct
proportion to the concentration of individual or multiple toxic agents. The
Tetramitus Assay measures the dose-response relationship, thus indicating
the presence and degree of toxicity. Because Tetramitus flagellates have a
gullet and are particle feeders, the assay allows for the measurement of
whole particle toxicity. This feature is a significant advancement in the
field of toxicity testing and is but one of many that distinguishes the
Tetramitus Assay from other bioassays.

As ETL continues with the commercialization of the Tetramitus Assay, several
important studies and evaluations of the technology are underway or being
prepared for publication. Dr. Jaffe, the President of ETL, presented the
results of a joint study with the Michigan School of Public Health to the
North Atlantic SETAC Conference. The study reports the results of a
comparison of the Tetramitus Assay with standard EPA WET tests. ETL has
concluded a joint study with the Massachusetts DEP, Brandeis University and
the University of Pittsburgh that has evaluated interlaboratory
reproducibility. The Tetramitus Assay has been submitted to the EPA's
Environmental Technology Verification (ETV) program. This program allows for
the fast track evaluation of promising new environmental technologies. ETL
has licensed WRK, an analytical laboratory in the Netherlands, to evaluate
the Tetramitus Assay and compare it with eight other biomonitoring tools
they currently use. Phase 1 of ETL's West Islip Drinking Water Toxicity
Feasibility Study is complete. The results of this study are being submitted
to the Suffolk County (NY) Department of Health in order to widen the scope
of the study and develop community involvement.

The market for this technology is expansive and growing. The Tetramitus
Assay makes toxicity screening quick and inexpensive for water utilities,
state and federal regulatory agencies, watershed projects, environmental
testing companies, individual homeowners and any industry required to
monitor effluent discharge. The potential use of this technology in the
pharmaceutical, chemical, cosmetic and hazardous waste industries may well
exceed its extensive environmental testing applications. ETL is actively
seeking other individuals, companies and organizations for partnerships and
joint development of further aspects of the Tetramitus Assay.


SOURCE: Environmental Toxicology Laboratory

Dr. Robert Jaffe, President ETL Phone: (718) 392-0185 Fax: (718) 392-8654
E-mail: info@envirolab.com
Web site:  http://www.envirolab.com