Apparatus with probe

Details Apparatus with probe Apparatus with probe

2011-05-03

2011-05-03

Nguyen, Sang (Department: 2886)

Optics: measuring and testing

For light transmission or absorption

Of fluent material

Reexamination Certificate

active

07936459

ABSTRACT:
An apparatus adapted to obtain a profile of a density gradient sample independently of fractionation is provided. The apparatus includes a light source, a probe comprising a first probe needle actuatable to extend into a tube containing a sample, a first light-transmitting means to receive light from the light source and transmit light through the sample as the probe needle extends into the sample, a second light-transmitting means to receive light transmitted by the first light-transmitting means and transmit the received light to a signal-producing means capable of translating the received light into a recordable signal to produce a profile of the sample. The apparatus may additionally be adapted to fractionate the sample following generation of the gradient profile.

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