602-2
The addition of boron nitride to the PELCO X-Checker™ B, #602-2 and #602-2A provides a more sensitive monitor of low end performance on thin window and windowless detectors.
602-2 - PELCO X-CHECKER™ B: Mn, Cu, Ni, C, and BN, 400 mesh Ni grid, ø25 x 5mm cylinder mount
602-2A - PELCO X-CHECKER™ B: Mn, Cu, Ni, C, and BN, 400 mesh Ni grid, ø12.7mm Al stub