Equipment Required
1
regular tip 7/32” screwdriver
1
test tube 13 x 100 mm
1
standard calibrated laboratory thermometer (51
mm immersion depth)
1.
Fill the 13 x 100 mm test tube with 2-3 ml. of
solution and place in dri-bath. Thermometer
should be suspended in solution in the tube.
Avoid letting the thermometer rest on the bottom
of the test tube.
2.
Turn the potentiometer on the back of the unit
clockwise (as you look at the back of the unit) to
increase temperature and counterclockwise to
decrease temperature. The potentiometer
rotates through 300 circular degrees. Each
degree of rotation is equal to .15°C; 1/4 turn (90
circular degrees) equals approximately 12°C.
3.
Allow 10 minutes stabilization time between fine
adjustments.
7
Calibration
Caution
Potentiometer rotates through 300 cir-
cular degrees maximum (approximate-
ly 7/8 of one full turn). Do not force
potentiometer.
