Abstract: A crystal forming device includes a base plate having a plurality of wells therein, each well adapted to receive a reservoir solution therein and each well having a bottom and a circumferential side wall connected With the bottom to define a chamber therein, the side wall having an upper circumferential edge defining an upper opening of the well; a single removable cover for covering all of the wells, the single removable cover having a lower surface which rests on the upper circumferential edges of the wells to seal the wells and to thereby seal the chambers, the cover having a plurality of circular beads formed on the lower surface thereof, the circular beads corresponding in position to the upper circumferential edges of the wells and the circular beads extending in surrounding relation to respective the upper circumferential edges when the cover is positioned on the base plate; and a silicon grease applied to the upper circumferential edges for sealing the lower surface of the single removable cover to ea

Abstract: An electronic health care diary is provided for a patient logging data concerning predetermined health conditions, such as for monitoring angina attacks. Upon the onset of e.g. the angina attack the patient presses a start button whereupon a real time clock generates a data and time signal which is stored in a memory along with the fact that the episode started. When the episode is over the patient presses a "stop" switch which generates another date and time signal from the real time clock and stores it in memory along with the fact that the episode terminated. A multi-position switch is actuated by the patient to indicate the extent of the condition, such as the severity of the attack. Optionally, a switch can be provided for correcting a previous erroneous entry, and another switch indicating the time and dosage of any medication. Data logged in the memory can be downloaded through a communications port and programming instructions can be uploaded into the device.