IR- Emitting in the Lab
We have several exciting new infra-red emitting dyes which can be used to custom-dye almost any microspheres you choose. And whenever you call, there will probably be some new ones to test in your application. What beads would you like?

FRET Beads? Don't fret, we have them!
We have dyes and particles which are appropriate for the exciting new Florescence Resonance Energy Transfer immunoassay. By the way, we've been teaching this idea for about three years at "The Latex Course". Apparently, it finally clicked.

Capillary ElectroChromatography Beads
At the suggestion of Rick Stout of Dade (DE) we have explored this market and are now offering our beads to this emerging field. If you are at all interested, please call or email us. We have Silica and polymeric (S/DVB) beads in the 1-5 um sizes most often requested, with a variety of surface chemistries. (Now accepting call-in requests!)

Surface-Dyed Microspheres
Several times recently we have been asked for beads with dye on the surface. We found one really neat method which works with many water-soluble dyes. What size beads and what dye do you want?

Flow Cytometry Microspheres
For years we have been selling plain beads which are used to make flow standards. Now we are expanding our line and offering plain or dyed beads which you may use in this application now. What do you need?

Chloromethyl-Activated Microspheres
We now offer a new line of proven stable, guaranteed reproducible, polymeric microspheres and chloromethyl surface groups for easy coupling to amine groups. One kit maker has them in production now. You can use a standard coupling protocol (just mix protein and microspheres at pH 7.5) or ask about our new improved proprietary protocol. Beads are offered in 50-500 nm sizes. Please tell us your needs. We're scaling up now!

ProActive® Protein-Coated Microspheres

See separate page about our newest products, coated with streptavidin, protein A or goat anti-mouse. New stock weekly.

Confocal Microscopy Standards-
You can purchase the set of three or buy individual items. They are 63nm polystyrene microspheres dyed with three different dyes which emit @ 420, 570, and 690nm. Ask for our new tech note #57 for a full discussion.