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Specimens Needed


Thermostat Demonstrator - GHS-20

This is a fully operational demonstration thermostat with fine silver contacts. The points are adjustable so that both a normally closed and a normally open circuit can be arranged.

The bimetal element can be quickly activated with an ordinary hair dryer. Binding posts on the backside are used for circuit connections.

Wabash Model #GHS-20.

Forensics Lab Supply Number 3178020.

Formerly Grau-Hall Corporation dba Grau-Hall Scientific.

All products shipped from Wabash, Indiana.

This product was added to our catalog on Saturday 21 November, 2009.
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1 x Tuning Fork, C 1024
1 x Achromatic Loupe 20x 15mm
1 x Thermometer, Red Spirit, Partial Immersion, White Back, 110 C
1 x Wheel & Axle - GS 301
1 x Indicator - Bromothymol Blue
1 x Tubing - Amber Latex - 5/16" ID, 1/16" wall.
1 x Indicator - 1,10-phenanthroline (4,7-Diphenyl-) -x.x-disulfonic
1 x Owl Pellet - Size 1-1/2 inch minimum
1 x Bell Jar with Closed Top with Knob. 5"d. x 9"h.
1 x 3035 Inverted Metallurgical Trinocular Microscope
1 x Burette Brush for 75ml/100ml. 5.25"x1.25" Bristle #1891

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