DEN-1B, Densitometer

The operation principle is based on measurement of optical density with digital presentation of results in McFarland units. The unit is calibrated at the factory (for operation with 16 mm diameter glass tubes) and keeps calibration without power supply. However, if necessary it is possible to calibrate the unit by 2–6 points in 0.0–6.0 McFarland unit range. We recommend to use Biosan standards to ensure full reliability, but it is acceptable to use other commercial as well as self prepared standards (e.g. BaSO4). Possibility to restore factory calibration settings.

Description

Densitometer is designed for measurement of cell suspension’s turbidity in the range of 0.0–6.0 McFarland
units (0 – 180×107 cells/ml).
Densitometers provide the opportunity to measure solution turbidity in a wider range (up to 15.0 McFarland
units) however, it is necessary to remember that in this case the standard deviation values increase