628-640
![](/assets/laser_icon-6878def642b5c58a674bfcbddf66bf2a6f5221b822b5837acc9d241f63e39826.png)
660/20
![](/assets/filter_icon-e61e62a195b52af6ed2d28cb2848c9e192fd6ca652eb54f80358bf39ecff207e.png)
640
![](/assets/ex_max_icon-14c5834adef7731da289b5625b651ef50cde5cbf709160a84df3d6a39c29947e.png)
656
![](/assets/em_max_icon-a8942c2a15f5f2d81845731b15646b1528e62895fd460d8e98ee1800e32949de.png)
About eFluor 660 Fix Viability
eFluorâ„¢ 660 Fixable Viability from Thermo Fisher Scientific is an amine-reactive dye that can be used to discriminate between live and dead cells in flow cytometry. It is compatible with further cryopreservation, fixation or permeabilization. It has an excitaiton peak at 640 nm and an emission peak at 656 nm.
Spectra
Dyes similar to eFluor 660 Fix Viability based on emission
Check to add to spectra viewer7-AAD Alexa Fluor 633 Alexa Fluor 635 Alexa Fluor 647 APC ATTO 633 BDY 650-X SE BODIPY 650/665 Brilliant Ultraviolet 661 Calcein Deep Red AM Calcein Deep Red CellROX Deep Red CellTrace Far Red CellTracker Deep Red CF633 CF640R CF647 CF647ST Chromeo 642 Cyanine 5 SE DY-481XL DY-520XL DyLight 633 eFluor 650NC eVolve 655 ExoBrite 640/660 EV Membrane Stain Flash Phalloidin NIR 647 FLUX 640 Fura Red AM (Ca2+bound) Fura Red AM (Ca2+free) FxCycle Far Red Helix NP NIR iFluor 633 Janelia Fluor 635 Janelia Fluor 646 LipidSpot 610 Live-or-Dye 640/662 LysoBrite NIR LysoView 633 MagDot 655 MemBrite Fix 640/660 MemBrite Fix ST 650/665 MitoLite Deep Red FX660 MitoView 633 mPlum MultiDot 655 Nile Blue NL 637 NovaFluor Blue 660 / 120S NovaFluor Blue 660 / 40S NovaFluor Red 660 NovaFluor Yellow 660 Nuclear-ID Red SureLight P3 PhenoVue 641 Mitochondrial Stain PromoFluor 633P Qdot 655 ReadiLink 633-655 ROS-ID Red STAR 635 STAR 635P STAR RED SureLight APC SureLight PE Cyanine 5.0 Sytox Red TagRFP657 Thiazole Red Thiazole Red Homodimer TO-Pro 3 TOTO-3 ViaKrome 638 VivaFix 649/660 Janelia Fluor 646, Haloalkane Thalidomide-Cyanine 5 RayBright Red 647 RayBright APC Janelia Fluor 635, Tetrazine ABflo 647 SiRA 2 AbBy Fluor 647 ExoBrite 640/660 cFluor R668 HB-2-30 ATTO 643 Janelia Fluor 635, Haloalkane Lysosome Probe NIR