Grant Instruments DEN-1 is a compact benchtop densitometer (suspension turbidity meter) 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 0.0 to >7.5 McFarland units (DEN-1B) with a small standard deviation. If required, it can deliver a wider measurement range (up to 15.00 McFarland units), but with a greater standard deviation.
Benefits
- Measurement range: 0.0 to >7.5 McFarland units (DEN-1B)
- Measurement time : 1 second
- Precision: ±3%
- Readings, conveniently shown in McFarland units, are clearly visible on the bright LED display
- Factory calibrated – retains calibration without power supply
- Can be user calibrated with commercial standards or cell suspensions prepared in the laboratory
- Designed for tubes with an outer diameter of 18mm. 16 mm tubes can also be accommodated by using the optional tube adaptor D-16
- Extremely compact design with small footprint and low profile – fits easily into the smallest workspace
- DEN-1b – either battery powered by 3xAAA or via external power supply
Applications
Life science – typical applications include determining the concentration of cells (bacterial and yeast cells) in the fermentation process, detecting the susceptibility of micro-organisms to antibiotics, identifying micro-organisms with various test systems, and measuring optical density at a fixed wavelength.
Specifications
|
Den-1B
|
Dimensions (hxdxw) |
75x115x165mm |
Temperature range |
+4 to 40ºC |
Light source |
LED |
Wavelength |
565 ±15nm |
Range (McFarland units) |
0.00 to 15.00 |
Precision |
±3% |
Measurement time |
1sec |
Tube diameter – external diameter |
18mm |
Tube diameter – with D16 adapter |
16mm |
Sample volume |
>2ml |
Display/display resolution |
LED/0.1 McF |
Independent power supply |
3xAA batteries |
External Power supply |
Input AC 120-230V, 50/60Hz Output DC 12V |
Power consumption – 230V |
0.1W (0.007A) |
Power consumption – 120V |
|
Weight |
0.7kg |