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 glass and transparent plastic 12 mm tubes (with included adapter), 16 mm tubes (with included adapter) or 18 mm tubes without an adapter
  • LCD display
  • Instrument is factory calibrated using 16 mm glass tubes.
  • External power supply


The DEN-1 densitometer 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 tubes (with included adapter), 16 mm tubes (with included adapter) or 18 mm tubes without an 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.


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

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About Us

Advance Scientific Products Pty Ltd is based in Queensland and is focused on delivering high-quality products and service to our customers in the life, chemical and analytical sciences across Australia.

The company was established in 2013 by experienced instrumentation specialists to provide full distribution and customer support capability to manufacturers seeking to expand their activities in Australia without having to create their own sales and marketing infrastructure.


PO Box 746
Moffat Beach, QLD, 4551, Australia