Apparatus for measuring a liquid specimen

A particle detector for detecting particles in an electrolyte, comprising:

• a body;
• means for forming an aperture in said body;
• a fluid path in said body communicating with said aperture;
• a syringe liquid path in said body;
• said syringe liquid path terminating in said fluid path;
• a first electrode in said body;
• said first electrode being disposed in said syringe liquid path near a junction of said syringe liquid path with said fluid path;
• a second electrode external to said body;
• and
• means for preventing direct electrical conduction through said body, whereby electrical conduction between said first and second electrodes is constrained to flow in said electrolyte through said aperture;
• said second electrode being disposed on an external surface of said body.

A system for detecting particles in an electrolyte, comprising:

• a detector;
• an aperture in said detector;
• a liquid path in said detector communicating with said aperture;
• a syringe liquid path in said detector communicating with said aperture;
• said syringe liquid path terminating in said liquid path;
• means for moving a predetermined fixed quantity of said electrolyte through said aperture and said liquid path;
• means for measuring an electrical resistance of said electrolyte through said aperture;
• a colorimeter in said liquid path;
• and
• said colorimeter being of a type effective for measuring a density of a color of said electrolyte passing therethrough.

A detector for detecting particles in an electrolyte comprising:

• a body;
• a liquid path in said body;
• an aperture in said body;
• a cross bore in said body communicating with said aperture and said liquid path;
• a syringe liquid path in said body;
• said syringe liquid path intersecting said cross bore, generally at right angles, at a point intermediate said aperture and said liquid path, whereby fluid flow between said aperture and said liquid path passes said syringe liquid bore, generally at right angles;
• and
• an electrode in said syringe liquid path.