Edwards Speedivac EO2 — oil diffusion pump, vapour

🔴 Check carefully

Diffusion pump unsuitable for WAVE freeze dryers; requires backing pump.

Condition from photo

Frame and plumbing intact, gauge readable, exterior clean. Internal wear cannot be assessed from photos.

Likely refurb / add-ons

• Backing pump (rotary vane, 2–5 m³/h): €200–400
• Oil and filter service: €80–120
• Soft-starter or controller: €150–300

Watch out for

• Diffusion pump alone cannot reach WAVE vacuum spec without a backing pump.
• No visible backing pump or controller in the rig photos.
• Requires continuous oil circulation and cooling; high operational cost.

WAVE AI estimate from photo + specs only — not a substitute for our physical pre-purchase check.