A variety of new instruments which better comply with new worker exposure standards is presented. The instruments tend to be relatively inexpensive, portable, and reasonably simple to operate. Various models are listed with price ranges, manufacturer name and addresses, and detailed descriptions of various models available. (EB)

This article describes the six regional instrumentation facilities established by the National Science Foundation. These centers make available to scientists state-of-the-art instrumentation such as: gas chromatographs; lasers; NMR spectrometers; X-rays; and others. (CS)

Listed are available control parameters including basic definitions and concepts and methods of measurement. The application of these parameters to the control of water and wastewater treatment plants is also outlined. (CS)