The model 2424 Analytical Nephelometer is a special adaptation of the Hach 2100A Laboratory Turbidmeter designed to minimize the effects of color interferences in turbidity measurement. This instrument operates on the principle that light, passing through a substance, is scattered by particulate matter suspended in the substance. A strong beam is sent upward through a cell containing a sample. As the beam passes through the turbidity particles, an amount of light is scattered at a 90° angle to the beam and is received by a photomultiplier tube. This light energy is then converted to an electrical signal which is measured by the instrument’s panel meter.

Specifications:

Accuracy: Within /- 2% of full scale
Reproducibilty: Within /- 2% of full scale
Sensitivity: Better than /- 0.5% of full scale
Standardization: Turbid solutions with known turbidity values
Calibration: Formazin
Sample Required: 25ml with 25 x 100 mm sample cells 2.5ml with optional 13 x 100 mm cells
Weight: Net – 17 lbs ( 7.7kg ) Shipping – 23 lbs ( 10.4 kg )
Dimensions: 9″H x 12″W x 81/2 D 22.8 cm x 30.4 cm x 21.6cm.
Power requirements: Manually adjustable for 95-135 V ac, 50-60 Hz, 35 Watts, or 190-270 V ac, 50-60 Hz, 35 Watts.