Nanosecond Fluorescence Lifetime Standards
We offer a range of nanosecond fluorescence lifetime standards with excitation and emission wavelengths from the UV to Visible spectral region.
Standard | tau / ns | Solvent | Ex / nm | Em / nm |
p-Terphenyl | 1.06 | EtOH | 295 | 350 |
PPD | 1.25 | EtOH | 282 | 350 |
POPOP | 1.29 | EtOH | 295 | 400 |
2-Aminpurine | 12.0 | Water | 295 | 380 |
Fluorescein | 4.04 | Water, pH10 | 444 | 500 |
All our lifetime standards are sold dry and are simply reconstituted by adding 50 µL of either water/NaOH/EtOH and/or buffer. One vial of our lifetime standards will typically allow for 10 measurements to be undertaken, when 5 µL (from 50µL) is further diluted into 3 cm3 volumes within a cuvette, the λABS max > 0.1.
For optimum performance, probe vials should be stored at -2 to -8 C when not being used. Probe solutions should be used after dilution. Our data sheets, provided with the vials, provide detailed instructions for reconstitution and use.
Lifetime Standards
We offer all 5 nanosecond Lifetime...
2-Amino Purine in water, Ex = 295 nm,...
p-Terphenyl in ethanol, Ex = 295 nm, Em...
Fluorescein in water/pH 10, Ex = 444...
PPD in ethanol, Ex = 282 nm, Em = 350...
POPOP in ethanol, Ex = 295 nm, Em = 400...