| 1 | Two-Stage Rotary Vane Small Laboratory Class | 5–12 m³/h | 1–5 Pa (0.01–0.05 mbar) | $450–$1,200 | 0.25–0.55 kW | Vacuum oil; periodic oil replacement and mist control | Oil and exhaust filter checks; vane and seal replacement typically after several thousand operating hours | Filtration, rotary evaporation, vacuum drying, freeze-drying support, general laboratory vacuum | 9.2 / 10 |
| 2 | Two-Stage Diaphragm Chemical-Resistant Class | 1.5–4 m³/h | 80–150 Pa (0.8–1.5 mbar) | $700–$1,800 | 0.15–0.35 kW | Oil-free; diaphragms and valves are wear parts | Periodic diaphragm and valve inspection; replacement commonly required after chemical or thermal stress | Solvent evaporation, vacuum filtration, gel drying, corrosive vapor handling | 8.9 / 10 |
| 3 | Oil-Free Dry Scroll Small to Medium Class | 6–15 m³/h | 0.5–2 Pa (0.005–0.02 mbar) | $3,000–$7,500 | 0.5–1.2 kW | Oil-free; tip seals and exhaust filters may require replacement | Tip-seal service commonly at approximately 8,000–15,000 operating hours, depending on load and gas cleanliness | Clean vacuum systems, electron microscopy support, analytical instruments, semiconductor-related laboratory work | 8.6 / 10 |
| 4 | Two-Stage Rotary Vane Medium Industrial Class | 16–30 m³/h | 0.5–2 Pa (0.005–0.02 mbar) | $1,200–$3,200 | 0.75–1.5 kW | Vacuum oil; oil mist filter recommended for continuous operation | Regular oil changes, inlet filter cleaning, exhaust filter inspection, and seal maintenance | Vacuum packaging, industrial drying, degassing, HVAC evacuation, coating-system roughing | 8.5 / 10 |
| 5 | Oil-Free Dry Scroll Medium Class | 20–35 m³/h | 0.1–1 Pa (0.001–0.01 mbar) | $6,000–$13,000 | 1.0–2.5 kW | Oil-free; scroll tip seals and exhaust filtration | Periodic tip-seal replacement; inlet filtration is important when processing dust or condensable vapors | Clean processing, research instruments, load-lock roughing, mass spectrometry support | 8.2 / 10 |
| 6 | Diaphragm Pump High-Flow Four-Head Class | 4–10 m³/h | 100–300 Pa (1–3 mbar) | $1,500–$4,000 | 0.3–0.8 kW | Oil-free; diaphragms and valves | Diaphragm and valve replacement based on cycle count, chemical exposure, and operating temperature | Parallel evaporation, vacuum ovens, filtration manifolds, chemical and pharmaceutical laboratories | 8.0 / 10 |
| 7 | Turbomolecular Pump 70–150 L/s with Backing Pump | 70–150 L/s | 10−7–10−8 Pa system dependent | $8,000–$18,000 including backing pump | 0.3–0.8 kW | Oil-free high-vacuum stage; separate backing pump required | Clean inlet protection, vibration control, bearing monitoring, and periodic overhaul according to operating hours | Surface analysis, research vacuum chambers, electron-beam systems, high-vacuum instrumentation | 7.8 / 10 |
| 8 | Oil-Sealed Rotary Vane High-Flow Three-Stage Class | 40–65 m³/h | 0.1–1 Pa (0.001–0.01 mbar) | $3,000–$7,000 | 1.5–3.0 kW | Vacuum oil, oil mist filtration, inlet filtration | Scheduled oil changes and regular inspection of vanes, seals, couplings, and exhaust filters | Large vacuum ovens, industrial impregnation, freeze-dryer support, coating and metallurgy systems | 7.7 / 10 |
| 9 | Turbomolecular Pump 250–450 L/s with Backing Pump | 250–450 L/s | 10−7–10−9 Pa system dependent | $18,000–$45,000 including backing pump | 0.8–2.0 kW | Oil-free high-vacuum stage; separate backing pump required | Strict contamination control, cooling monitoring, vibration management, and scheduled bearing service | Large research chambers, thin-film deposition, accelerator equipment, advanced analytical systems | 7.4 / 10 |
| 10 | Single-Stage Diaphragm Compact Chemical Class | 0.6–2.0 m³/h | 500–1,500 Pa (5–15 mbar) | $350–$950 | 0.08–0.20 kW | Oil-free; diaphragms and valves | Basic inspection and replacement of diaphragms or valves when pumping speed declines | Vacuum filtration, small desiccators, sample preparation, educational and benchtop use | 7.3 / 10 |