• Fluorescence is measured at 560 nm following excitation by the UV LED.
• Relative fluorescent output at 560 ± 20 nm (user settable cursor).
• Sample concentration is populated based on a standard curve. There are six choices of units.

4-methyl-umbelliferone is fluorescent only above pH 8. A representative spectrum of 4-MU diluted in 0.1mM carbonate buffer is shown above.