DEN-1B, McFarland Densitometer
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Catalog excerpts

DEN-1B, McFarland Densitometer - 1

Biosan SIA., Ratsupites 7, build. 2, Riga, LV-1067, Latvia, Phone: +371 674 261 37, Fax: +371 674 281 01, E-mail: marketing@biosan.lv, http://www.biosan.lv Premium Prod lift Cast Densitometer is designed for measurement of cell suspension's turbidity in the range of 0.0-6.0 McFarland units (0 - 180x107 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. A densitometer is used for measurement of cell concentration (bacterial, yeast cells) during fermentation process, determination of microorganism sensitivity to antibiotics, microorganism identification using various test-systems, for measurement of absorption at the definite wavelength, as well as for quantitative estimation of concentration of colour solution, absorbing green light. 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. Both commercial standards (e.g. produced by BioMerieux, Lachema, etc.) and the cell suspensions prepared in a laboratory can be used for calibration. Possibility to restore factory calibration settings* Following calibration kits are available on request: • CKG16-4 for glass tubes with diameter 16 mm (polymer microparticles), set of 0; 0.5; 1.0; 2.0; 3.0; 4.0 McFarland Turbidity Standards; • CKG16-6 for glass tubes with diameter 16 mm (polymer microparticles), set of 0; 0.5; 1.0; 2.0; 3.0; 4.0; 5.0; 6.0 McFarland Turbidity Standards; • CKG18-4 for glass tubes with diameter 18 mm (polymer microparticles), set of 0; 0.5; 1.0; 2.0; 3.0; 4.0 McFarland Turbidity Standards; • CKG18-6 for glass tubes with diameter 18 mm (polymer microparticles), set of 0; 0.5; 1.0; 2.0; 3.0; 4.0; 5.0; 6.0 McFarland Turbidity Standards; Two versions of the product are available: 1. DEN-1 powered from external energy supply; 2. DEN-1B powered both from external energy supply and from batteries (AA). Besides, DEN-1B operates with higher precision of measurements (up to 0,01 McF). *NEW FUNCTION M SPECIFICATION Light source LED Measurement wavelength (A) A = 565 ±15 nm Accuracy, of the full scale ±3% M CAT. NR. DEN-1B incl. A-16 adapter, external power supply unit BS-050104-AAF 230VAC 50/60Hz Euro plug ---------------- Optional accessories

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DEN-1B, McFarland Densitometer - 2

Biosan SIA., Ratsupites 7, build. 2, Riga, LV-1067, Latvia, Phone: +371 674 261 37, Fax: +371 674 281 01, E-mail: marketing@biosan.lv, http://www.biosan.lv DEN-1B, Densitometer (suspension turbidity detector) Premium B Product Class Measurement time Sample volume Tube external diameter Possibility to restore factory calibration settings Display Overall dimensions (WxDxH) Weight Independent power supply Input current/power consumption External power supply 1 s not less than 2 ml 16 mm (using A-16 adapter) or 18 mm (without adapter) + LCD 165 x 115 x 75 mm 0.7 kg 3 x AA batteries 12 V, 7 mA /...

Open the catalog to page 2

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