PS-SPECK MICROSCOPE P 1 KIT，P7220，Invitrogen

The PS-Speck™ Microscope Point Source Kit contains four different colors of fluorescence microspheres; each microsphere has a diameter of 0.175 +/- 0.005 µm. This exceptionall small diameter coefficient of variation makes the PS-Speck™ microspheres ideal as uniform, subresolution fluorescent point sources for calibrating instrument optics, especially in three-dimensional imaging applications. This kit's four ready-to-use 1 mL suspensions contain bright, monodisperse microspheres with excitation/emission wavelengths of 360/440 nm (blue), 505/515 nm (green), 540/560 nm (orange) and 633/660 nm (deep red). The PS-Speck™ Kit also includes a mounting protocol for the user's convenience and sufficient mounting medium to prepare about 100 slides of each.