Zeiss Axiolab A Especificaciones descargar pdf (Pagina 92)

OPERATION

Carl Zeiss Lighting and contrasting method in transmitted light Axio Lab.A1

92 430037-7144-001 04/2013

Evaluation:

If the crystal needles parallel to the gamma direction are yellow and those perpendicular to the gamma

direction are blue, they are monosodium urate crystals (gout).

If the crystal needles parallel to the gamma direction are blue and those perpendicular to the gamma

direction are yellow, they are calcium pyrophosphate crystals (pseudogout).

4.1.6.3 Determining the direction of oscillation n

(1) Application

The determination of the direction of oscillation of n

and n

(direction of oscillation with the absolutely

or relatively highest refractive index) and n

and n

(direction of oscillation with the absolutely or

relatively lowest refractive index) in relation to the morphological directions, e.g. of crystal surfaces,

crystal needles or fibers, provides an important criterion for recognition. It is also employed for the

diagnosis of biocrystals (e.g. gout, pseudogout).

Fig. 4-14 Determining the direction of oscillation n

’

using a synthetic fiber as an example

(2) Equipment configuration for Axio Lab for conoscopy

 Eyepiece with crossline reticle

 Tension-free objectives

 Rotary stage Pol (Fig. 4-12/1)

 Polarizer D (rotatable or fixed)

 Compensator lambda or lambda/4 as required

 Alignment specimen for polarization microscope (453679-0000-000)

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Zeiss Axiolab A Especificaciones Pagina 92