Indicating moisture traps reduce water to less than 10 ppb; indicator changes from yellowish-green to blue at 5% relative humidity.

• Prepurged for fast stabilization
• Reduces noise from high-sensitivity detectors
• 10 µm frit prevents microparticulate damage to needle valves and flow controllers
• Maximum operating pressure: 100 psi (689 kPa)

The heavy-walled glass body of these traps prevents oxygen and water infusion.