Pen Point Marker – 540 µCi (BM10-540)

The Co-57 Pen Point Marker – 540 µCi is a precision-manufactured sealed source constructed from 300 series stainless steel and engineered for consistent performance and reliable activity output. The streamlined design provides a defined active point with a secure threaded shielding cap for protected storage when not in use.

The marker features a 0.25″ (6.3 mm) diameter body and measures 9.26″ (23.5 cm) in overall length without the shield. With the 0.5″ wall thickness threaded cap installed, the total length is 10.1″ (25.6 cm), providing effective shielding of the active end.