For Sale: Klett-Summerson Photoelectric Colorimeter

Model 800-3.

When the Adjust Zero knob is turned, the needle floats smoothly from side to side and can be adjusted to set at the center line.

When the scale knob is turned, the zero needle moves not more than 1/4" from side to side.

Unit powers up, no further testing done.

Procedure for Operation of the Klett-Summerson Colorimeter

1. Place the proper filter (red or blue) in the colorimeter.

2. Switch on the Lamp.

3. Switch off (Down is off) the circuit to lamp and adjust the dark current. This is the dial on top of the galvanometer. Note it has a slow response.

4. Turn the switch on the side of the instrument on and insert a blank tube. With the main reading dial set to zero adjust the zero with the knob at the rear of the colorimeter near the test tube hole.

5. Remove the blank tube and insert the sample and turn the front knob to find the reading for the sample, record the reading.

6. Replace the blank tube and check the value before reading another sample.

Comments:

1. The instrument has a precision of 23 3 or 2.5% or the precision at 108 2.8 or 2.1%.

Filters may be purchased @ the following: http://www.labdepotinc.com/Product_Details~id~455~pid~13486.aspx

Sold as-is without any warranty expressed or implied plus additional packing/handling fee of $10.00.

age: Recent
condition: Good