Turbidimetry / Nephelometry

Estimates a suspension's particle concentration with minimal equipment, by measuring how much light a beam loses passing straight through it, or how much scatters off to the side, as it crosses the sample.

References

• Lowry, O.H., Rosebrough, N.J., Farr, A.L., Randall, R.J. "Protein Measurement." Journal of Biological Chemistry 193, no. 1 (1951): 265–275.