Apparatus for measuring the amount of minute particles contained

Details Apparatus for measuring the amount of minute particles contained Apparatus for measuring the amount of minute particles contained

1986-04-22

1988-11-01

Rosenberger, R. A.

Optics: measuring and testing

For size of particles

356 73, 356339, G01R 1502

Patent

active

047814594

ABSTRACT:
An apparatus for measuring particles contained in a sample liquid has a cylindrical cell having an incident light transmitting portion, a transmitted light transmitting portion diametrically aligned with the incident light transmitting portion, and a light transmitting portion at an angle to the diameter between the incident light transmitting portion and the transmitted light transmitting portion. An inlet at one end of the cell admits sheath flow liquid having the same index of refraction as the sample liquid, and an outlet is provided at the other end of the cell. A rectifying cylinder is positioned within said cell and has the axis extending between the inlet and the outlet and perpendicular to the diameter between the incident light transmitting portion and the transmitted light transmitting portion and having light passing holes therein aligned with the incident light transmitting portion, the transmitted light transmitting portion and the scattered light transmitting portion, the cylinder causing sheath flow liquid to flow smoothly from the inlet to the outlet at a predetermined pressure thereof and directed toward said outlet and upstream of the diameter and discharges sample liquid into the cylinder at a pressure higher than the predetermined pressure. An optical detector optically connected to the scattered light transmitting portion detects light scattered from particles in the sample liquid.

REFERENCES:
patent: 3661460 (1972-05-01), Elkins et al.
patent: 3826364 (1974-07-01), Bonner et al.
patent: 3861198 (1975-01-01), Shea
patent: 3989381 (1976-11-01), Fulwyler
patent: 4273318 (1981-01-01), Stohr
patent: 4515274 (1985-05-01), Mollinger et al.
patent: 4683212 (1987-07-01), Uffenheimer

Affiliated with

Also associated with

Rating

Apparatus for measuring the amount of minute particles contained does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for measuring the amount of minute particles contained, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for measuring the amount of minute particles contained will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-887140