Micrometering liquid sample dispenser

A micrometering liquid sample dispenser comprising:

• a group of syringe samplers equal in number to the number of sample liquids being metered and dispensed and having cylinders and piston with piston rods;
• pipes for conveying the sample liquids into a test tube, the pipes being equal in number to the number sample liquids and adapted to communicate with outlets of corresponding aforesaid syringe samplers;
• a stand accommodating said syringe samplers;
• a drive for relative reciprocating displacement of the pistons and cylinders of said syringe samplers serving as a sample volume regulator and kinematically linked with said stand;
• a control unit having a set of outputs;
• a sample volume and timing setter incorporated into said control unit and having a set of outputs;
• a drive for step-by-step rotation of a test tube tray having an output connected to a first output of said set of outputs of said control unit;
• a drive for reciprocating the ends of the sample liquid dispensing pipes relative to the test tube, the drive having an output connected to a second output of said set of said control unit;
• a group of piston rod locking means equal in number to the number of said syringe samplers, the locking means being intended for a programmable metering and dispensing the sample liquids and located in close proximity to said piston rods of said syringe samplers;
• outputs of said piston rod lock means connected to said corresponding outputs of said sample volume and timing setter;
• three-way valves equal in number to the number of sample liquids being measured and dispensed adapted to hydraulically communicate said corresponding pipes for conveying the sample liquids into a test tube;
• pipes equal in number to the number of sample liquids;
• containers for the sample liquids;
• and
• a holder for holding the ends of said pipes for conveying the sample liquid being metered and dispensed to effect a programmable dispensing into a test tube.