Promotional price valid on web orders only. Your contract pricing may differ. Interested in signing up for a dedicated account number?
Learn More

Invitrogen™ PS-Speck™ Microscope Point Source Kit (blue, green, orange & deep-red fluorescent beads) Non-distribution product as customer accommodation. Available on GSA/VA Contract for Federal Government customers only.

Contains four different fluorescence microsphere colors

Manufacturer:  Invitrogen™ P7220

Catalog No. P7220

Add to cart

Includes: Mounting protocol and mounting medium to prepare 100 slides



Each microsphere has a diameter of 0.175 ±0.005µm. This exceptionally 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.

  • Four ready-to-use 1mL suspensions contain bright, monodisperse microspheres with excitation/emission wavelengths of 360/440nm (blue), 505/515nm (green), 540/560nm (orange) and 633/660nm (deep red)
  • Includes mounting protocol for user's convenience and sufficient mounting medium to prepare about 100 slides of each

Cell Analysis, Cell Cycle, Cell Viability, Proliferation and Function, Cellular Imaging, Immunofluorescence (IF)

This product(s) resides on a Fisher Scientific GSA or VA contract. If you are viewing this page as a nonregistered user, the price(s) displayed is List Price. To view your GSA or VA contract pricing, log in using your account number, or become a registered user by contacting one of our Customer Service teams. You can also view your contract price by searching for this item(s) on GSA Advantage. To place an order, contact Fisher Scientific Customer Service.

Order Info

Shipping Condition: Room temperature



Optic Calibration, Fluorescence Microscope Calibration
Store in refrigerator (2–8°C) and protect from light.
Orange, Deep Red, Blue, Green
Suspension Beads
Room Temperature
Provide Content Correction

The Fisher Scientific Encompass Program offers items which are not part of our distribution portfolio. These products typically do not have pictures or detailed descriptions. However, we are committed to improving your shopping experience. Please use the form below to provide feedback related to the content on this product.

Product Title

By clicking Submit, you acknowledge that you may be contacted by Fisher Scientific in regards to the feedback you have provided in this form. We will not share your information for any other purposes. All contact information provided shall also be maintained in accordance with our Privacy Policy.

Cancel Submit

For Research Use Only. Not for use in diagnostic procedures.