BS-050102-AAK | Densitometer for suspension turbidity quantification (DEN-1)

Key Features

• Ideal for the measurement of turbidity of solutions containing cells or microorganisms
• Measures turbidity over a wide range of McFarland units at 565 nm
• LED light source
• Suitable for 12 mm (with optional 12 mm adapter), 16 mm (with included A16 adapter) or 18 mm tubes without adapter
• LCD display
• Instrument is factory calibrated using 16 mm glass tubes. Optional calibration standards are available (please see below).

Description

The DEN-1 densitometer from Biosan has been developed to measure the turbidity of a solution containing cells or microorganisms. Turbidity is measured over a range of 0 - 15.0 McFarland units which equates to 0 - 150 x 10⁷ cells/mL).

Key applications for the DEN-1 include:

• Measurement of cell concentration (e.g. bacteria and yeast cells) during fermentation
• Determination of microorganism sensitivity to antibiotics
• Microorganism identification using various test systems
• Measurement of absorption at fixed wavelength
• Quantitative estimation of concentration using solutions that absorb green light

The DEN-1 is compatible with glass and transparent plastic 12 mm (with optional A-12 adapter) and 16 mm tubes (with included A-16 adapter) or 18 mm tubes without the adapter. The instrument is factory-calibrated for use with 16 mm diameter glass tubes with calibration parameters being stored in the DEN-1 in case the unit needs to be reset to factory calibration settings. 

The DEN-1 should, however, be recalibrated to the diameter and configuration of the end-user's sample tubes if these are not 16 mm glass tubes. It should also be recalibrated any time  another type of sample tube is used. Optional turbidity standards are available (please see below) or the end-user can employ their own standards for this purpose.

Optional Accessories

The following adapter, tubes and calibration kits are available for the DEN-1:

Part Number	Item Description
CKG16	Set of 0.5, 1.0,  2.0,  3.0 and 4.0 McFarland Turbidity Standards (latex particles): for 16 mm diameter glass tubes
CKG1802	Set of 0.5, 1.0,  2.0,  3.0,  4.0 and 5.0 McFarland Turbidity Standards (BaSO4): for 18 mm diameter glass tubes
BS-050102-LK	Glass sample tubes without cap, (16 mm х 100 mm x 0.8 mm), quantity of 78 tubes
A-12	Adapter for 12 mm tubes

Specifications

Manufacturer	Biosan
Model number	DEN-1
Measurement range	0 - 15 McFarland units
Display resolution	0.01 McFarland units
Light source	LED
Measurement wavelength (λ)	565 nm ±15 nm
Accuracy (0.3 - 5.0 McF)	±3%
Measurement time	1 second
Sample volume	≥2 mL
Tube external diameter	12 mm (with optional 12 mm adapter), 16 mm (with included A-16 adapter), or 18 mm (without adapter)
Restore factory calibration settings	Yes
Display	LCD
Overall dimensions (W x D x H)	165 mm x 115 mm x 75 mm
Weight	0.7 Kg
Input current | power consumption	12 V |  80 mA:  1 W
External power supply (supplied with instrument)	Input: 100–240 VAC, 50/60 Hz | Output: 12 VDC

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