Cal Check Advantages:

• Meets new PS1 Requirements (ASTM D6216-03)
• Helps comply with regulations
• Isolates the monitor from stack
• On-stack testing using filters
• Unparalleled customer support and service

Products:

   • Test Filters
   • Cal Check 101Z
   • Cal Check 101
   • Cal Check 301
   • Cal Check 401
   • Cal Check 402
   • Cal Check 501
   • Cal Check 701

Durag/Enviroplan 280/281

This device simply slides on the zero reflector stop and attaches using the thumbscrew. The monitor was also marketed by ThermoEnvironmental (TECO) and Esterline Angus.

• The 301 uses Cal Check Type 1 test filters.