- Hoge kwaliteit en uitgebreide service
- Al meer dan 100 jaar een begrip
- Een breed assortiment
BioSan DEN-1B densitometer
Art.Nr.
L247BS-050104-AAF
BioSan DEN-1B densitometer
Art.Nr.
L247BS-050104-AAF
Range 0.00–15.00 McF
Display resolutie 0.01 McF
Golflengte λ = 565 ±15 nm
Nauwkeurigheid (0.0–6.0 McF) ±3%
Meetduur 1s
Sample volume min. 2ml
Buitendiameter buis 12 mm, 16 mm (i.c.m. A-12, A-16 adapter) of 18 mm (zonder adapter)
Externe afmetingen 16,5 × 11,5 × 7,5cm
Gewicht 700g
Compleet met voeding, A-16 adapter en 3x AA batterij
Modelcode BS-050104-AAF
| Merk | BioSan |
|---|---|
| Afscheider zuigzijde | Nee |
| Condenser uitlaat | Nee |
- Mogelijkheid om verschillende typen buizen te gebruiken
- Verschillende standaarden kunnen gebruikt worden voor kalibratie
- Zeer klein oppervlakte
- Kan m.b.v. AA batterijen zonder voedingsadapter worden gebruikt
- Wordt enkel met adapter A-16 geleverd
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.
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. 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.
Following calibration kits are available on request:
- CKG16 for glass tubes with diameter 16 mm, set of 0.5; 1.0; 2.0; 3.0; 4.0 McFarland Turbidity Standards (latex particles);
- CKG1802 for glass tubes with diameter 18 mm, set of 0.5; 1.0; 2.0; 3.0; 4.0; 5.0 McFarland Turbidity Standards (BaSO4);
- CKG12 for glass tubes with diameter 12 mm, set of 0.0 (blank); 0.5; 2.0; 3.0 McFarland Turbidity Standards (latex particles).
Two versions of the product are available:
- DEN-1 powered from external energy supply;
- DEN-1B powered both from external energy supply and from batteries (АА). Besides, DEN-1B operates with higher precision of measurements (up to 0,01 McF).