General Information and Safety Practices and Hazards 
Agilent Cary 3500 UV-Vis Spectrophotometer User’s Guide  7 
Lamp Module 
The lamp is enclosed in a self-contained module. This module contains 
components operating at high voltages. To avoid electric shock, NEVER 
disassemble the module. 
Modules, Covers and Panels 
The only routinely accessed panel is the Cary UV spectrophotometer sample 
compartment to introduce samples. 
The only other cover and panel that is customer accessible is the lamp module 
and is to be removed ONLY when changing the lamp module. Consult the Cary UV 
Help and Learning Center for instructions and safety information. 
Any other panels or covers that are retained by screws on the spectrophotometer 
and accessories may be opened ONLY by Agilent service engineers. 
Compressed gas cylinders 
Compressed gas cylinders contain highly pressurized gas. If storage conditions 
are outside of the recommended supplier’s safety codes, the cylinders can explode 
or rapidly release gas into the environment. This may result in injury or death. 
  Store and handle compressed gases carefully and in strict adherence to safety 
codes. 
  Secure cylinders to an immovable structure or wall. 
  Store and move cylinders in an upright, vertical position. Before transport, 
remove regulators and install cylinder cap. 
  Store cylinders in a well-ventilated area away from heat, direct sunshine, 
freezing temperatures, and ignition sources. 
  Clearly mark cylinders so there is no doubt as to their contents. 
  Use only approved regulators and connections. 
  Use only connector tubing that is chromatographically clean and has a 
pressure rating significantly greater than the highest outlet pressure from the 
regulator.