Densitometer DEN-1 and DEN-1B For measuring the turbidity of cell suspensions in a variety of applications
Grant bio DEN-1 and DEN-1B are compact benchtop densitometers (suspension turbidity meters) for measuring the turbidity of cell suspensions in a variety of life science applications.
The densitometers are designed and factory calibrated to measure turbidity in the range of 0.5 to 4.0 McFarland units (DEN-1) from 0.0 to >7.5 McFarland units (DEN-1B) with a small standard deviation. If required, they can provide a wider measurement range (up to 15.00 McFarland units), but with a larger standard deviation.
- Measurement range: 0.5 to 4.0 McFarland units (DEN-1), 0.0 to >7.5 McFarland units (DEN-1B)
- Measurement time: 1 second
- Accuracy: ±3%
- Readings, conveniently displayed in McFarland units, are clearly visible on the bright LED display
- Factory calibrated: maintains calibration without power
- Can be user-calibrated with commercial standards or laboratory-prepared cell suspensions
- Designed for tubes with an outer diameter of 18 mm. 16 mm tubes can also be accommodated using the optional D-16 tube adapter
- Extremely compact design with a small footprint and low profile: easily fits into the smallest workspace
- DEN-1b – powered by 3 x AAA batteries or via external power supply
Applications
Life Sciences: typical applications include determining cell concentration (bacterial and yeast cells) in the fermentation process, detecting microorganism susceptibility to antibiotics, identifying microorganisms with various test systems, and measuring optical density at fixed wavelength.
Specifications
Den-1 | Den-1B | |
| Dimensions (hxwxd) | 75 x 115 x 165 mm | 75 x 115 x 165 mm |
| Temperature range | From +4 to 40ºC | From +4 to 40ºC |
| Light source | LED | LED |
| Wavelength | 565 ± 15 nm | 565 ± 15 nm |
| Range (McFarland units) | 0.3 to 15.0 | 0.00 to 15.00 |
| Accuracy | ±3% | ±3% |
| Measurement time | 1 second | 1 second |
| Tube diameter – outer diameter | 18 mm | 18 mm |
| Tube diameter – with D16 adapter | 16 mm | 16 mm |
| Sample volume | >2ml | >2ml |
| Display/display resolution | LED/0.1 McF | LED/0.1 McF |
| Independent power supply | – | 3 AA batteries |
| External power supply | AC input 120-230 V, 50/60 Hz DC output 12 V | AC input 120-230 V, 50/60 Hz DC output 12 V |
| Power consumption – 230V | 1 W (0.08 A) | 0.1 W (0.007 A) |
| Power consumption – 120V | ||
| Weight | 0.7 kg | 0.7 kg |
