The utility model relates to the technical field of chemical equipment, in particular to a portable chemical
reagent quantitative sampling meter, which comprises a quantitative sampling meter component group, the quantitative sampling meter component group is used for quantitative sampling and comprises a metering cylinder, one end of the metering cylinder is provided with a knob, and the other end of the metering cylinder is provided with a
handle. A lower ring piece is arranged on one side of the rotary knob, a
threaded rod is arranged in the lower ring piece, and a top plate is arranged at one end of the
threaded rod. The quantitative sampling device is simple in structure, convenient and fast to operate, small and exquisite in overall structure and portable enough, when a volatile
reagent is quantitatively sampled, due to the sealed structure, damage of volatile gas can be avoided, meanwhile, the knob is connected with the
threaded rod through threads, and compared with direct drawing of the threaded rod and the
piston piece, the position driving of the
piston piece is more convenient to operate. The movement of the
piston piece is slower, so that more accurate quantitative sampling can be realized.