Iris Sample Processing StatSpin® CenSlide 2000 Urine Sediment Analysis System - Manual (Page 21)

Special Topics
OPERATOR’S MANUAL
CenSlide 2000 Urinalysis System Page 3 - 7
3.3.2 Non American Optical (Non-AO) Microscopes
After 1979, the Deutsche Industrial Norm (DIN Standard) was
accepted by most microscope manufacturers. This standard-
ization of objective lengths solves the problem of the focusing
distance when DIN Standard High Resolution Long Working
Distance objectives are used.
Microscopes equipped with 40x DIN Standard objectives
may hit the CenSlide tube’s viewing area when it is rotated
from the 10x objective to the 40x objective. StatSpin invento-
ries a replacement 40x high resolution long working distance
objective that produces excellent images at 40x without
interference. It can be used with all DIN Standard micro-
scopes. Use StatSpin product number 2C-4950-001,
Microscope Objective, 40x, Long, to order this objective.
3.3.3 American Optical (AO) Microscopes
American Optical microscopes equipped with a 40x “infinity
corrected” objective do not have enough working distance
to focus on urine microscopic elements without hitting the
CenSlide tube’s viewing area.
StatSpin inventories a replacement 40x high quality, flat field,
long working distance objective that produces excellent
images with all American Optical “infinity corrected”
microscopes. Use StatSpin product number 2C-4940-001,
Microscope Objective, 40x, Short, to order this objective.
If an American Optical microscope’s 40x objective is
“Not Parfocal” with the 10x objective, it requires the
operator to refocus excessively between the 10x and the
40x objective. To eliminate this, StatSpin supplies with each
American Optical “infinity corrected” replacement objective,
a set of “shims” (washers of different thickness) that can be
installed between the 40x objective and the turret to eliminate
“non-parfocal” situations. Exact combinations of these shims
provide the ability to “fine-tune” the parfocal situation.