TFAX 488,SE dilithium, an amine reactive green fluorescent dye, is insensitive to pH in the range 4-10. TFAX 488,SE dilithium forms bright and photostable conjugates with proteins and antibodies. TFAX 488,SE dilithium is suitable for use in flow cytometry, two-photon excitation microscopy (TPE), and super resolution microscopy techniques, such as dSTORM, SIM and STED. Excitation maximum=495 nm; emission maximum=515 nm; extinction coefficient=73,000 M-1cm-1; quantum yield=0.92.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.