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DEN-1 & DEN-1B Densitometer Grant Instrument |
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Descriptions |
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The Grant bio DEN-1 and DEN-1B are a compact benchtop densitometers ( suspension turbidity meter ) for measuring turbidity of cell suspensions in a variety of life science applications. |
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The densitometers are designed and factory calibrated to measure turbidity in the range of 0.5 to 4.0 McFarland units ( DEN-1 ) 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. |
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Measurement range |
0.5 to 4.0 McFarland units (DEN-1), 0.0 to >7.5 McFarland units ( DEN-1B ) |
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Measurement time |
1 second |
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Precision |
±3 % |
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Readings, conveniently shown in McFarland units, are clearly visible on the bright LED display |
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Factory calibrated - retains calibration without power supply |
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Can be user calibrated with commercial standards or cell suspensions prepared in the laboratory |
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Designed for tubes with an outer diameter of 18 mm. 16 mm tubes can also be accommodated by using the optional tube adaptor D-16 |
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Extremely compact design with small footprint and low profile - fits easily into the smallest workspace |
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DEN-1b - either battery powered by 3 x AAA or via external power supply |
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Specifications |
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Model |
Den-1 |
Den-1B |
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Dimensions ( H x D x W ) |
75 x 115 x 165 mm |
75 x 115 x 165 mm |
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Temperature range |
+4 to 40 ºC |
+4 to 40 ºC |
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Light source |
LED |
LED |
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Wavelength |
565 ±15 Inm |
565 ±15 Inm |
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Range ( McFarland units ) |
0.3 to 15.0 |
0.00 to 15.00 |
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Precision |
±3 % |
±3 % |
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Measurement time |
1 sec |
1 sec |
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Tube diameter - external diameter |
18 mm |
18 mm |
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Tube diameter-with D16 adapter |
16 mm |
16 mm |
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Sample volume |
>2 ml |
>2 ml |
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Display/display resolution |
LED/0.1 McF |
LCD/0.01 McF |
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Independent power supply |
- |
3 x AA batteries |
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External Power supply |
Input AC 120-230 V, 50/60 Hz Output DC 12 V |
Input AC 120-230 V, 50/60 Hz Output DC 12 V |
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Power consumption - 230 V |
1 W ( 0.08A ) |
0.1 W ( 0.007A ) |
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Power consumption - 120 V |
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Weight |
0.7 kg |
0.7 kg |
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Applications |
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Life science - typical applications include determining 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 fixed wavelength. |
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