Abstract: An agent and process are used for the determination of calcium in liquids. The agent contains essentially orthocresolphthalein complexone, an acid and a zwitterionic buffer and is characterized in that the buffer contains at least one sulphonic acid amine of the general formula ##STR1## wherein R.sub.1 and R.sub.2 are identical or different and denote H or alkyl, hydroxyalkyl or cycloalkyl having in each case up to 8 C atoms andR.sub.3 denotes alkyl or hydroxyalkyl having up to 8 C atoms.

Abstract: A fuse for an antiballistic missile including a generator of two conical beams, each directed at a different, predetermined angle to the missile axis and including a plurality of range gates. A signal processor senses target intercept with the beams and range gates and calculates target miss distance and crossing angle. The fuse includes circuitry to detonate selected detonators for generating a fragment pattern directed toward the sensed target position.

Abstract: A housing having exterior lateral side walls, top and bottom side walls and a single internal wall running adjacent to a lateral side wall. The housing defines an internal rectangular compartment and a parallel side track between the adjacent internal and external walls. A collapsible bag filled with liquid and a slide member, actuable by a constant torque spiral spring are located in the compartment. The slide member has a boss fitting and cooperating with the track to allow the slide member to freely slide without a rotative component under action of the spring.