An easily constructed pulse former1

Easily constructed soil percolation apparatus.

The construction of a soil percolator from a disposable Nalgene sterilizing filter is described.

Easily Constructed Microscale Spectroelectrochemical Cell.

The design and performance of an easily constructed cell for microscale spectroelectrochemical analysis is described. A cation exchange polymer film, Nafion, was used as a salt bridge to provide ionic contact between a small sample well containing a coiled wire working electrode and separate, larger wells housing reference and auxiliary electrodes. The cell was evaluated using aqueous ferri/fer...

An easily constructed carbon fiber recording and microiontophoresis assembly.

Traditional multibarreled pipette electrodes are still widely used in microiontophoresis studies. Although better electrodes have been introduced, they are difficult and time-consuming to make. Construction of a carbon fiber recording and microiontophoresis assembly is described here. The construction of a carbon fiber electrode assembly is easy and carbon fibers have excellent characteristics ...

An easily constructed, tuning free, ultra-broadband probe for NMR.

We have developed an easy to construct, non-resonant wideband NMR probe. The probe is of the saddle coil geometry and is designed such that the coil itself forms a transmission line. The probe thus requires no tuning or matching elements. We use the probe with a spectrometer whose duplexer circuitry employs a simple RF switch instead of the more common lambda/4 lines, so the entire probe and sp...

An Efficient and Easily Constructed Drip-Regulator for Transfusions