How to give a rainy-day fish afightingchance fjlun can be tough on trout. Toxic •rtrations of aluminum accumulate on fish's gills and cause them to suffocate. Toxicity studies of acidic lakes show that it's an aluminum monomer—with a median concentration of 20 parts per billion—that does the deadly damage. Scientists probing the effects of acid rain on North American lakes and streams rely on Varian Atomic Absorption technology for precise measurement. The SpectrAA Automatic Furnace AA System, for instance, offers a cost-effective way to measure aluminum and other metals in waters, tissues, and soil—right down to low-ppb levels. Varian instruments are helping scientists solve complex problems that endanger our environment.. .and give rainy-day fish a fighting chance. details about the SpectrAA Series terns and other analytical instruments, -231-5772 today ia, call 416-457-4130. SpeetMA-nûHtjwtA Muun-patented'Zeeman SpectrAA is a series of centrally-controlled, high-performance atomic absorption systems for automated flame, furnace and hydride determinations. Data Systems Aionnc Absorption INTELLIGENT SOLUTIONS FOR YOU vanan INS-4551/263 CIRCLE 18 ON READER SERVICE CARD m

How to give a rainy-day fish a fighting chance

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How to give a rainy-day fish a fighting chance

fjlun can be tough on trout. Toxic •rtrations of aluminum accumulate on

fish's gills and cause them to suffocate.

Toxicity studies of acidic lakes show that it's an aluminum monomer—with a median concentration of 20 parts per billion—that does the deadly damage.

Scientists probing the effects of acid rain on North American lakes and streams rely on Varian Atomic Absorption technology for precise measurement. The SpectrAA Automatic Furnace AA System, for instance, offers a cost-effective way to measure aluminum and other metals in waters, tissues, and soil—right down to low-ppb levels.

Varian instruments are helping scientists solve complex problems that endanger our environment.. .and give rainy-day fish a fighting chance.

details about the SpectrAA Series terns and other analytical instruments,

-231-5772 today ia, call 416-457-4130.

SpeetMA-nûHtjwtA

Muun-patented'Zeeman SpectrAA is a series of centrally-controlled, high-performance atomic absorption systems for automated flame, furnace and hydride determinations.

Data Systems Aionnc Absorption

INTELLIGENT SOLUTIONS FOR YOU vanan INS-4551/263

CIRCLE 18 ON READER SERVICE CARD