Sample liquid transfer means in an automatic chemical testing ap

Details Sample liquid transfer means in an automatic chemical testing ap Sample liquid transfer means in an automatic chemical testing ap

1977-09-06

1979-02-20

Wolk, Morris O.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

73425, 222309, 141 21, 422 50, B01L 302, G01N 114, G01N 3100

Patent

active

041404882

ABSTRACT:
Means for reducing intersample contamination in an automatic chemical testing apparatus, in which liquid from a sample is aspirated from a sample source into a reservoir, and aliquots of the sample are each dispensed into individual reaction containers for analysis by well-known means. A cylindrical reservoir is utilized with a piston therein shaped for pushing out virtually all of the remaining sample from the cylinder after dispensing the sample liquid through a hollow needle, communicating with the cylinder. A solid pin coaxially mounted within the piston is projected through the needle and has minimum clearance therewith, for pushing remaining sample out of the needle. The portion of the pin projecting through the needle is retracted into the piston prior to aspiration of liquid from a next sample.

REFERENCES:
patent: 3252330 (1966-05-01), Kling
patent: 3723066 (1973-03-01), Moran
patent: 3815790 (1974-06-01), Allen et al.
patent: 3900289 (1975-08-01), Liston
patent: 4023716 (1977-05-01), Shapiro
patent: 4039287 (1977-08-01), Moran
patent: 4039288 (1977-08-01), Moran

Affiliated with

Also associated with

Rating

Sample liquid transfer means in an automatic chemical testing ap does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sample liquid transfer means in an automatic chemical testing ap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sample liquid transfer means in an automatic chemical testing ap will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-256462