Texture image
Blue water wave 1400

Machine QA

Blue Water Phantom Photon Beam QA

Fast, easy-to-set-up alternative to traditional water tanks for routine checks of a linear accelerator's photon beam.

Blue Water Phantom Overview

A New Standard in Water-Equivalency

  • Water equivalent material within 1.0% for photons, and is free of contaminants and air.
  • Slabs from this unique material are exceptionally strong and will not stick together when stacked or stored.
  • Not affected by changes in temperature or humidity
  • Can be used for electrons

Unique Chamber Slab Design

In slabs that are at least 2 cm thick, cavities are available to accommodate parallel plate ion chambers or thimble type ion chambers. Instead of having multiple slabs for each thimble type ion chamber, a single ion chamber slab is used with interchangeable ion chamber plugs.


  • Wide Range: Available in nine standard thicknesses.
  • Tested for Consistency: Each production is tested at an independent calibration laboratory for consistency.

Additional products that utilize Blue Water

  • QA BeamChecker Plus: Perform fast daily QA. Automatic energy detection, measurement acquisition, and reset.
  • Stereotactic Dose Verification Phantom: Accommodates ion chamber and film dose measurements for commissioning treatment systems and plan specific dose verification.

Blue Water Specifications

  • Density
    1.09 g/cm3
  • Thickness Tolerance
    +/- 0.15 mm
  • Length and Width Tolerance
    +/- 0.5 mm
  • Physical Form
    Square Slabs (Standard)
  • Sizes Available
    30 cm x 30 cm, 20 cm x 20 cm (Standard)
  • Thicknesses Available
    0.2 cm, 0.3 cm, 0.5 cm, 1 cm, 2 cm, 3 cm, 4 cm, 5 cm, 6 cm (Standard)
  • Other Options
    Blank Cavity, Milled for Parallel Plate Chamber

Blue Water Phantom Plug with Cavity

  • A12 Farmer-Type Chamber
  • A14SL Slim Line Microchamber
  • A16 Micropoint Chamber
  • A19 Classic Farmer Chamber


Tech Notes

Please sign in or register to the customer care portal to view tech notes.

Have Questions About the Blue Water Phantom?

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Join our Mailing List