A turbid solution indicates

A turbid solution is an indicator of increased bacterial growth. In biology, growth refers to the increase in cell size and number during the development of an organism. This growth can be measured using a spectrophotometer, which determines turbidity—the degree to which light is absorbed or scattered by a bacterial suspension. Thus, by observing the turbidity of a broth medium, the bacterial growth rate can be monitored: higher turbidity means higher bacterial growth.

Additional Information:

• Turbidity is a measure of the relative clarity of a liquid. It is an optical property that quantifies how much light is scattered by particles present in the water or solution when illuminated.
• The greater the scattering of light, the higher the turbidity.
• A turbid liquid appears cloudy, opaque, or murky, often caused by suspended sediment, microorganisms, or other particles. For example, water near a waterfall is typically turbid due to disturbed particles.

Note:

• Synonyms (hyponyms) for turbidity include cloudiness, murkiness, and muddiness.
• Turbidity is commonly measured in Nephelometric Turbidity Units (NTU) using the nephelometric method, which compares light scattering in a water sample with that in a reference solution.
• Today, electronic handheld meters are widely used for turbidity measurements.