ATTO 647
ATTO 647 (Ex-Max 645 nm/Em-Max 669 nm)
ATTO 647 from ATTO-Tec Gmbh has an excitation peak at 645 nm and an emission peak at 669 nm.
Excitation & emission spectra
Key facts
- Excitation maximum
- 645 nm
- Emission maximum
- 669 nm
- Optimal laser line
- 628-640
- Optimal filter
- 660/20
- Relative brightness
- 4 of 5
- Extinction coefficient
- 120000
- Quantum yield
- 0.2
- Molecular weight
- 731
ATTO 647 has an excitation maximum at 645 nm and an emission maximum at 669 nm, a Stokes shift of 24 nm. Its extinction coefficient is 120000 M⁻¹cm⁻¹. It is optimally excited by the 628-640 laser line.
Frequently asked questions
- What is ATTO 647?
- ATTO 647 from ATTO-Tec Gmbh has an excitation peak at 645 nm and an emission peak at 669 nm.
- What laser excites ATTO 647?
- ATTO 647 is optimally excited by the 628-640 laser line. Its excitation maximum is 645 nm.
- What filter should I use to detect ATTO 647?
- A 660/20 filter captures the peak of the ATTO 647 emission near 669 nm with minimal spillover.
- How bright is ATTO 647?
- ATTO 647 has a relative brightness of 4 out of 5 (quantum yield 0.2).