DESIGNING THE RIGHT CORROSION CHAMBER ENVIRONMENT

Plumbing & Utilities

Reliable water and air supply directly impact test repeatability, uptime, and chamber longevity.

• Water: ASTM D1193 Type IV (Conductivity < 5 µS/cm); 30 to 60 psi
• Air: 65–85 psi (Clean, Dry, Oil-Free)
• Connections: Strain relief required on all hard connections

Best practice: When possible, supply the corrosion lab with a dedicated DI water system and a dedicated, continuous-duty-rated, oil-free air compressor (or dedicated branch with clearly labeled, lockable isolation valves). Utility outages and maintenance work are a recurring cause of avoidable downtime and equipment damage — especially when facilities teams service shared systems without realizing the corrosion lab is attached.

Critical warning: If compressed air is interrupted while the chamber continues running, liquid can migrate into the air circuits. This is one of the most costly failure modes — it can require replacement of multiple air-path components.

Prevent it: Whenever the utilities are shut down, serviced, or isolated, the corrosion chamber must be shut down.

Supply Lines: Water & air supply lines for consistent atomization.

Dedicated manifold: Isolation valves reduce risk during maintenance and outages.

Drainage, Filtration & Control Examples

Room Environmental Conditions Dictated By Common Standards

• Temperature: 20–25°C (68–77°F)
• Humidity: 45 ±10% RH
• Non-condensing environment recommended
• Avoid high humidity and temperature swings

Intake Air Quality (Purge Cycle, if equipped): The chamber's purge blower uses ambient room air. Ensure the room is free of dust, paint fumes, and chemical vapors. If the room air is contaminated, those contaminants can be blown directly onto your test specimens during the dry cycle, potentially invalidating results.

Tip: Treat the room like a lab, not a warehouse.

Floor & Structural Requirements

Chambers, solution tanks, and water jackets are heavy when filled. Plan for a stable surface, reliable open drainage, and an installation location that won’t put other equipment at risk.

• Flat, level concrete floor recommended (leveling is required for proper internal open drainage)
• Verify floor loading capacity for filled chamber + tanks
• Nearby open floor drain recommended for overflow, washdown, and maintenance
• Chemical-resistant coatings preferred
• Avoid carpet, tile, wood, or porous surfaces

Drainage Physics: Chamber drains are gravity-fed. The drain line must pitch downhill continuously. Do not hard-pipe the chamber drain directly to a sewer line. An open site drain or air gap is required to prevent siphoning and sewer gas backflow.

Location warning: Do not install corrosion chambers near, above, or below sensitive equipment areas such as server rooms, electrical rooms, clean rooms, or electronics/controls cabinets. Salt fog residue, condensate, and accidental leaks can migrate through floors, drains, or ventilation pathways and cause costly damage.

Heat Rejection & HVAC Load

• Confirm HVAC capacity for heat load
• Avoid small enclosed rooms without airflow
• Maintain consistent ambient conditions
• Consider dedicated supplemental cooling for multiple chambers

Planning for Growth

• Additional chambers
• Extra utilities and isolation valves
• Future exhaust capacity
• Extra floor drain capacity

It is far easier to oversize utilities now than retrofit later.