Originally published at: MKS Spectral Calibration Lamp 719531 B1310 Mercury Lamp - Chratec Part
![](https://cds.chemvn.org/original/3X/8/4/845b842b395c3f347452de7272c459f581ae9e50.jpeg)
Two ports, one is a pinhole and the other the full width of the lamp.
chratec.com
Originally published at: MKS Spectral Calibration Lamp 719531 B1310 Mercury Lamp - Chratec Part
chratec.com