In 2000 commentators everywhere were hailing the boom in some western economies as the dawn of a new economy. In 2001, with a slowdown biting in the US economy, dot.coms folding and information and communications technology firms feeling the pinch globally, the headline writers have swung the...

The purpose of this test is to determine the effects of a substance on the growth of freshwater microalgae and/or cyanobacteria. Exponentially growing test organisms are exposed to the test substance in batch cultures over a period of normally 72 hours. The system response is the reduction of...