nanogram

the concentration of the substance was measured in nanograms.

they found traces of the chemical in nanogram quantities.

nanogram levels of the toxin can be harmful to health.

researchers are studying substances at the nanogram scale.

the detection limit was set to one nanogram.

nanograms of the drug were detected in the samples.

they need to calibrate the instrument to detect nanogram quantities.

she measured the pollutant in nanograms per liter.

the laboratory specializes in nanogram-level analysis.

nanogram precision is vital for this type of research.