Model 900 Small Animal Stereotaxic Instrument originally designed by David Kopf Instruments in 1963, is a versatile, easy-to-use instrument that facilitates proper alignment of small animals for the stereotaxic placement of electrodes, micropipettes, cannula and other devices. The process in which the instrument is built and assembled assures that the researcher will be able to make accurate placements. Precise alignment of the slides assures smooth movements resulting in correct use of the atlases. The instrument consists of a rugged “U” frame to which is affixed a Model 960 three-dimensional Electrode Manipulator. Model 1770 Standard Electrode Holder with corner clamp is included.
Manipulator X, Y, Z adjustment – Metric scale 80 mm travel, calibrated 0.1 mm vernier scale.
Angle adjustment – Fully universal joint calibrated on two planes for access from any angle. Vertical alignment pin can be removed for angled settings from 0° – 90° either side of vertical, 2° increments.
Rotation adjustment – Manipulator swivel base can be rotated up to 360°. Manipulator X/Z axis can be repositioned at 90° increments.
The stereotaxic frame is mounted to a 17″L x 10″W base plate and is elevated to bring ear bar height to 53 mm. Ear bar slots on the “U” frame have 0.1 mm verniers for ease in centering the animal. Ear bar zero to posterior end of base plate is 8.763″.
Several adapters are available for both rat and mouse, with or without gas anaesthesia. Model 900 includes as standard the 920 Rat Adaptor which include a nose and tooth bar assembly offering various stereotaxic adjustments. Please contact us for other adaptor option.
Dorsal/Ventral adjustment dial – Calibrated in 0,1 mm increments, 1 mm per revolution.
Dorsal/Ventral adjustment – 30 mm
Dorsal – 10 mm above ear bar zero
Ventral – 20 mm below ear bar zero
Adaptor Plate A/P adjustment – 44 mm
Standard Accessories included in Model 900:
Model 900 Stereotaxic “U” Frame Assembly
Model 900-C Base Plate (17″ L x 10″ W)
Model 920 Rat Adaptor including one set of
Model 955 45° Non-rupture Ear Bars
Model 960 Electrode Manipulator (0.1 mm resolution)
Model 1770 Electrode Holder with corner clamp