Abstract: A constant-pressure apparatus for the administration of fluids intravenously includes a container for a fluid to be administered, and a liquefied-gas source having a constant gas pressure and arranged in association with the container so as to apply the constant pressure of the liquefied-gas cartridge to the fluid therein, thus forcing the fluid to exit through an outlet of the container at a constant rate.

Abstract: This invention discloses a thermal envelope including a pouch (12) and a flap that closes the pouch and thermal capacitance material (18) that lines the pouch, wherein the thermal capacitance material (18) has an initial temperature in a temperature range of −5 degrees C. to 20 degrees C., characterized by the thermal capacitance material having a thermal that maintains a temperature of the medical sample placed in the pouch (12) within the temperature range during a period of time not more than 7 hours from the time the medical sample was placed in the pouch. A method for sending a medical sample from a sampling site to a laboratory is also disclosed.

Abstract: The invention provides a reagent for the presumptive identification of cocaine, cocaine salts and phencyclidene comprising cobalt thiocyanate, at least one poly-hydroxy alcohol and a third component selected from the group consisting of a polyether, a silicon derivative of a polyether and mixtures thereof, with the proviso that the poly-hydroxy alcohol is not glycerol.