Educational & Research Items (School & University Items)

SOM CODE : 3338/2
Model : 50-7376
COMPANY : HARVARD, ENGLAND.

Universal Kymograph with Stimulator

Product Description :

The Kymograph is the same as described above. The built-in square wave stimulator has a maximum output of 25 volts with less than 25 impedance. The frequency range is continuously variable from 0 to 100 Hz. There are six preset pulse widths. The output has three selections: continuous, single pulse by push button, and external trigger via the contact arms on the Kymograph spindle. All the controls are located on the front panel.

Specifications:

Output Voltage	0 to 25 V, continuously variable in 3 ranges, 0 to 250 mV, 0 to 2.5 V and 0 to 25 V
Sockets	2 x 4 mm sockets
Impedance	< 25 ½ at max. output current of 250 mA
Pulse Width	6 preset widths of 0.05, 0.1, 0.5, 1 2 and 5 ms
Frequency	0.1 to 100 Hz continuously variable in 3 ranges, 0.1 to 1.0 Hz, 1 to 10 Hz and 10 to 100 Hz
Mode Selection	Continuous, single and trigger via contact arms on spindle
Cylinders	Not included, see next page
Base Dimensions	460 x 230 x 220 mm (18.1 x 9 x 8.7 in), H x W x D
Weight	7.5 kg (16.5 lb)

Brouchure

SOM CODE : 3338/11
Model : 50-5578
COMPANY : HARVARD, ENGLAND.

Unprinted Kymograph Paper Sheets for Ink Recording

This high quality plain Paper is specially glazed for either ink recording or smoke recording. Each Sheet has an additional 15 mm wide strip that is gummed for mounting the Sheet on the Kymograph Cylinder. Supplied in a package of 100 sheets

SOM CODE : 3338/1
Model : 50-7392
COMPANY : HARVARD, ENGLAND.

Universal Kymograph Assembly

This Assembly includes the Universal Kymograph with Stimulator plus a comprehensive set of accessories with a 165 page Applications Manual with detailed instructions for over 30 experiments. Some of the possible experiments include:

Frog Heart In Situ Preparation:

Recording of cardiac activity
Effect of stimulation of the heart (refractory period compensatory pause)
Demonstration of conduction path (stimulus ligatures)
Effects of stimulating the vagus nerve (cardiac inhibition)
Effect of drugs

Muscle-Nerve Preparation:

Effect of stimulating voltage (simple muscle twitch)
Effect of stimulation frequency (tetanus)
Staircase phenomenon (Treppe)
Effect of repeated stimulation (fatigue)
Effects of drugs on muscles
Effect of pre- and after-loading on muscle efficiency For locust work, a special cork mounting block is supplied, which wedges vertically in the muscle chamber. The accessories for the Kymograph are listed on the following pages.

Brouchure

SOM CODE : 1487/3
Model : M
COMPANY : UGO BASILE, ITALY

SQUARE WAVE STIMULATOR-OPERATION 230V-60HZ, INCLUDING ISOLATED SQUARE WAVE STIMULATOR,220V AND SIGNAL MAGNET,INK & SMOKE WRITING

SOM CODE : D501/52
Model : 50-3573
COMPANY : HARVARD, ENGLAND.

Myograph Board.

Product Description :

The Myograph Board has a 6 mm thick cork plate cemented to an acrylic bloc measuring 87 x 139 mm (3.4 x 5.5 in). At one end and one side there are 9.5 mm mounting clamps with locking screws for securing the board to a kymograph upright or suitable stand. At the other end there is a fork fitting for the crank lever. The crank lever has a threaded shank flattened on two sides that slide into the fork fitting and is secured by to knurled thumb nuts. The nut can move along the entire length of the shaft giving 38.1 mm (1.5 in) vertical adjustment. The L-shaped lever extends 72 mm (2.83 in) horizontally from the fulcrum and 20 mm (0.78 in) vertically. The horizontal arm has 8 holes and the vertical arm 3 holes for tying thread. A thumb screw can be adjusted to limit the downward movement of the lever. The board without the lever only has one mounting clip.

SOM CODE : 3338/8
Model : 50-0736
COMPANY : HARVARD, ENGLAND.

Pen Filler

Product Description :

This Pen Filler is a small plastic syringe with a capacity of 1 ml, graduated by 0.1 ml increments. It is used to fill the pen supplied with the writing points

SOM CODE : 3338/6
Model : 50-0728
COMPANY : HARVARD, ENGLAND.

Writing Ink 30ml

Product Description :

This specially prepared ink is for use with fine capillary tubing and fine writing styli. Available in two sizes.

SOM CODE : 3338/4
Model : 50-2484
COMPANY : HARVARD, ENGLAND.

Weight Set 10 Gram

Product Description :

These Weight Sets consist of a hook/weight pan and nine pierced disk weights. The assembly hangs from the hook when the weights are in place. Three sets are available with total weights of 10, 50 and 100 grams. The 10 Gram Set has a 1 gram hook/weight pan with nine 1 gram disk weights. The 50 Gram Set has a 5 gram hook/weight pan with nine 5 gram disk weights. The 100 Gram Set has a 10 gram hook/weight pan with nine 10 gram disk weights.

SOM CODE : 3338/3 & D178/1
Model : 50-5669
COMPANY : HARVARD, ENGLAND.

Muscle and Heart Bath Set & Bath Assy.

Product Description :

The Complete Assembly mounts on the upright of the Harvard Apparatus Universal Kymograph, and permits a wide range of experiments with muscle-nerves and frog hearts. The apparatus is made up of three parts: the bath, the electrode and the lever and pen assembly.

SOM CODE : 3338/5
Model : 50-5362
COMPANY : HARVARD, ENGLAND.

Unprinted Kymograph Paper Sheets 500x200

Circumference : 500 mm (19.7 in)

Paper Height : 200 mm (7.9 in)

SOM CODE : 3338/7
Model : 50-7665
COMPANY : HARDVARD, ENGLAND.

THREAD-ONE REEL

SOM CODE : D178/2
Model : 50-0686
COMPANY : HARDVARD, ENGLAND.

INK PEN.

Note : Please mention the product "SOM CODE" while making request for quotation and send it to dabab@somatco.com.