Compact and efficient benchtop densitometers for measuring 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 0.3 to 5.0 McFarland units (DEN-1) 0.00 to 6.00 McFarland units (DEN-1B) with a small standard deviation. If required, they can deliver a wider measurement range (up to 15.00 McFarland units), but with a greater standard deviation.
The DEN-1 includes the unit itself and the D16 adaptor which allows the use of 16mm tubes, in addition to the power supply, plug and operating manual.
- Measurement range: 0.3 to 5.0 McFarland units (DEN-1), 0.00 to 6.00 McFarland units (DEN-1B)
- Measurement time: 1 second
- Precision: ± 3%
- Standard deviation at 3.00 McF units: ± 0.1 McF
- User calibration option
- 2-Year manufacturer warranty
Applications: 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
22A00F751:
DEN-600 is a compact, portable, rechargeable battery powered photometer. DEN-600 comprises of 600 nm wavelength optical system, which enables to apply - 1) OD600 method that estimated total number of cells, 2) McFarland (McF) turbidity measurement method, 3) Bradford protein assay method for protein concentration measurement, 4) other methods that can be adjusted or optimized using 600 nm wavelength.
The device serves as an inexpensive alternative to a spectrophotometer, which is commonly used for these applications. Because DEN-600 is battery powered and compact, it can be comfortably located in a biosafety cabinet, anaerobic chamber or quickly moved to another lab room. Additionally, the vessel holding mechanism allows accommodating standard 10 mm path cuvettes, round bottom, conical vials, or falcon tubes, therefore enabling to measure the absorbance and turbidity in Abs, OD or McF units.
USB connectivity and DEN software allow for data transfer, data processing and calculation, software calibration for Bradford protein assay method or a custom calibration for a specifically applicable vessel and custom turbidity standards.
Common applications include:
Cell concentration measurement;
Cell growth data estimation;
Log phase estimation for microbial cells induction;
Competent cell preparation;
Bradford protein assay method;
Antibiotic susceptibility testing;
Inhibitory tests.
Applications include:
OD600 method for total cell estimation;
McFarland (McF) turbidity method measurement;
Bradford protein assay method for protein concentration.
Inexpensive alternative to a spectrophotometer for biotechnology labs.
22A00F752: Standards reference, set of 5 McFarland for user calibration of 16mm tubes (requires also D16)