Describes a low cost potentiostat/coulometer which can maintain an eletroylsis current of up to 100 MA at cell voltages as high as 100V. (Author/SL)

Reviews recent developments in chromatographic instrumentation. (SL)

Reviews the electronic instrumentation utilized in the medical measurement of oxygen concentration, blood oxygen, brain viability, and fluid balance. (SL)

Describes apparatus for demonstrating magnetic lines of force, plastic discharge tubes, minimum angle of deviation of light passing through a prism, light scattering, and measuring high voltage. (SL)

Describes an apparatus for quickly demonstrating the quantum effect of freezing the rotational energy of molecular hydrogen. (SL)

This section contains a listing of the manufacturers of environmental monitoring instruments. The manufacturers are listed alphabetically under product headings. Addresses are included in a different section. (MA)

Describes apparatus utilized to demonstrate physics principle. Equipment described includes a low pressure chamber, a 360 degree loop ramp, a tilted table demonstrating motion principles, and a method for casting a three dimensional display of magnetic lines of force. (SL)

Shows how a standard slide projector can be adapted for use as an effective spectroscope. Also describes three experiments using the modified slide projector. (JN)

Examination of relationships between manner of utilization of human and material resources and secondary school students' achievement in and attitude toward science found that frequency of use of laboratory resources had highest positive correlation with achievement, followed by quality of use of laboratory resources. Quality of use of laboratory…

Introduces a 3-dimensional mechanical lattice with adjustable telescoping mechanisms. Discusses the crystalline state, the 14 Bravais lattices, operational principles of the mechanical lattice, construction methods, and demonstrations in classroom. Provides lattice diagrams, schemes of the lattice, and various pictures of the lattice. (YP)

Reviews the usage of Genecon, a hand-operated generator, in science laboratory experiments, such as the relationship between motor and generator effects, the system's efficiency, Joule heating, and conversion of mechanical energy into electrical potential energy. Provides the address for purchasing the Genecon and accessories. (YP)

Introduces several one- and two-mode vibrating systems for demonstrations. Provides some recommendations for designing the corridor apparatus. (YP)

Describes an apparatus that uses liquified gases to wash solids. Discusses the procedures and processes used to do a wash with liquid sulfur dioxide. (CW)

Discusses the uses of thermistors in teaching electronics and semiconductors. Describes how to experimentally measure and graph the characteristics of a thermistor. Suggests one possible approach to understand the shapes of the characteristics. (CW)

Explains the use of an accelerometer in investigations confirming Newton's second law. Provides diagrams and descriptions of the apparatus. (ML)