[Requisition, reply forms and data recording (author's transl)]. / Accettazione, refertazione ed archiviazione.

A system for the automatic handling of laboratory data is described with particular reference to the microbiology module. The system is based on "real time" operation which permits acquisition of data as soon as they are generated; computation as soon as the necessary elements became available, production and storage of results as soon as computed.

High-performance liquid chromatography with UV detection and diode-array UV confirmation of isonicotinic acid hydrazide in cattle milk.

A method for the determination of isonicotinic acid hydrazide (isoniazid) in milk was developed. Milk was deproteinized with trichloroacetic acid. Isoniazid was condensed with cinnamaldehyde and assayed on a reversed-phase HPLC system, with good sensitivity and accuracy (10 micrograms/l) with UV detection at 330 nm. Use of solid-phase extraction with a C18 cartridge allows the detection limit to be lowered to 0.1 microgram/l with UV detection and confirmation of isoniazid hydrazone from the diode-array UV spectrum.

[Method of separating volatile anesthetics from gaseous mixtures in which they are contained]. / Metodica di separazione degli anestetici volatili dalle miscele gassose in cui sono contenuti.

A technique for separating volatile anaesthetics from the gaseous mixtures in which they are contained is reported. It consists of the absorption of vapours by bubbling the mixture in fluid solvents belonging to the glycol group. The results show that the principles described can be applied in practice as the technique is able to ensure the almost complete absorption of anesthetic vapours for the duration of an operating session lasting five hours.