Grant Instruments DEN-1 USA Compact Benchtop Densitometer, 0.3 to 15.0 McFarland Range, 120V, 4 to 45 Degree C, 165mm Width x 75mm Height x 115mm Depth

The Grant bio DEN-1 is a compact benchtop densitometer (suspension turbidity meter) for measuring turbidity of cell suspensions in a variety of life science applications. The equipment is designed to measure turbidity in the range of 0.3 to 5.0 McFarland units with a standard deviation of +/-0.1. A wider measurement range - up to 15.0 McFarland units - is available with a higher standard deviation. Measurement time: 1 second. Precision: +/-3 percent. 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. Typical applications include determining concentration of cells (bacterial and yeast cells) in the fermentation process, detecting the susceptibility of microorganisms to antibiotics, identifying microorganisms with various test systems, and measuring optical density at fixed wavelength. Light diode light source. 565 +/-15nm Wavelength. Standard deviation, McFarland unit: 0.5 +/-0.1 McF, 3.0 +/-0.1 McF, 6.0 +/-0.2 McF, 7.5 +/-0.2 McF. +/-3 percent Precision. 1 Seconds measurement time. 18mm external tube diameter. 16mm Tube diameter with D-16 adaptor. Sample volume: greater than or equal to 2mL. 2 digit LED display. 12V, 300 mA external power supply. 4 to 45 degree C ambient temperature range. Measures 165mm width by 75mm height by 115mm depth.

Accessories include: Spare adaptor for 16mm tubes D16 (ASIN B0090QXWAA); Set of 5 McFarland reference standards for user calibration 18mm tubes DEN MCF 18 STDS (ASIN B00ITUE8TC); Standards reference, set of 5 McFarland for user calibration of 16mm tubes (requires also D16) DEN MCF STDS (ASIN B0090QX2GO)