Air Compressors
Compressed air is often called the fourth utility in laboratories and production plants, and its quality decides whether instruments perform or drift. Air compressors in this category range from quiet oil free scroll units for analytical benches to rotary screw systems feeding whole facilities, with dryers and filtration to match. Oil carryover, dew point and particle class are the specifications that matter in scientific settings. Machinery Masters lists compressors from verified sellers, new and used, with direct owner contact and finance available on qualifying listings.
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Air Compressor Product Types
Compressor selection follows the air quality and volume a facility needs. The compressor types described below are the ones that come up most in this category.
Oil free scroll compressors
Scroll units deliver clean, quiet air for laboratory instruments and medical applications. Zero oil in the compression chamber removes the biggest contamination risk at source.
Rotary screw compressors
Screw machines supply continuous high volume air for production plants and large facilities. Variable speed drive versions trim energy cost by matching output to demand.
Piston and reciprocating compressors
Simple robust piston units suit intermittent duties and smaller workshops. Low purchase cost balances against higher noise and duty cycle limits.
Silenced laboratory compressors
Cabinet enclosed units run quietly enough to sit inside the lab beside the instruments they feed. Integrated dryers and filters deliver instrument ready air from one box.
Air treatment and drying systems
Refrigerant and desiccant dryers, filter trains and condensate management complete the air system. Dew point control prevents moisture reaching sensitive instruments and valves.
Brands on Machinery Masters
The major industrial air names appear regularly alongside dedicated laboratory compressor builders. The strip below is built from the Air Compressors listings live on Machinery Masters, so the names move with available stock.
Latest Air Compressors Listings
Why Choose Machinery Masters
Verified Sellers Only
Every seller is verified before a single listing goes live. Machinery Masters also reviews listings for accuracy, so buyers can commit to high value machinery with confidence.
Global Reach
Listings come from sellers across Europe, North America, and beyond. That reach widens the options past any regional dealer network, and it is often the only way to find discontinued models in good condition.
Flexible Financing Options
Qualifying listings carry financing through partner providers. Terms are shown directly on eligible product pages, spreading the cost instead of draining working capital in one hit.
Direct Seller Contact
No broker sits between the buyer and the seller. Ask about service history, arrange inspections, and negotiate directly with the person who actually knows the machine.
Applications and Uses
Compressed air serves scientific facilities in more ways than most budgets acknowledge. Four common applications are set out below.
Analytical instrument supply
FTIR purge, nebuliser gas and pneumatic valve actuation all draw on clean dry air. Oil free supply protects columns, detectors and optics from contamination.
Bioprocess and fermentation plants
Sparge air and pneumatic control on bioreactors demand oil free, filtered supply. Air quality sits directly in the product contact pathway.
Cleanroom and facility services
Compressed air drives tools, actuators and airlocks throughout controlled environments. Breathing air systems add further treatment for suited operators.
Pharmaceutical packaging lines
Blister formers, cartoners and labellers run almost entirely on pneumatics. Stable pressure keeps line speeds and reject rates consistent.
Benefits from Machinery Masters
Compressed air quality is decided at the specification stage, and a full market view helps you specify well.
Scroll benches to plant room screws
Quiet lab units and facility scale air compressors list together within the utilities, power and facility systems range. Air classes and capacities are stated for rapid matching.
Air budget redirected to what defines quality
A used screw compressor with documented hours delivers identical air at well below new price, freeing spend for dryers and filtration. Both markets sit together for honest comparison.
Load profiles from the previous installation
Sellers can state running hours, service intervals and the duty the machine carried, which predicts remaining life better than age. Qualifying compressor listings can be financed.
Frequently Asked Questions About Air Compressors
Most analytical instruments specify air to ISO 8573 1 class 1 or 2 for oil and particles, with a pressure dew point well below the coldest point in the system. Oil free compressors paired with appropriate filtration achieve this most reliably. Check each instrument's manual for its stated class, since one demanding instrument sets the specification for the whole supply.
Sum the consumption of every connected device in litres per minute, apply a simultaneity factor, and add at least a quarter for growth and leaks. Duty cycle matters as much as peak flow, since piston and scroll units need rest periods while screw compressors run continuously. Receiver volume smooths intermittent demand and lets a smaller compressor serve peaky loads.
Ask for total running hours and the service log, then inspect for oil leaks, unusual vibration and corrosion in the receiver, which is a pressure vessel with statutory inspection requirements in the UK. On screw machines, airend condition is the big ticket item, so listen for bearing noise under load. A pressure vessel without current written scheme certification needs that cost built into your offer.
They can be, if paired with validated coalescing and activated carbon filtration that brings oil content within the required class, though the filtration then needs disciplined maintenance. Many labs prefer oil free machines simply because they remove the failure mode entirely. For direct product contact or breathing air applications, oil free supply with appropriate monitoring is the defensible choice.
Transport is agreed directly between you and the seller through Machinery Masters, and most compressors travel palletised or skidded by standard freight. Confirm who handles loading, offloading and positioning into the plant room, since that final move often needs specialist handling. Factoring installation, pipework and commissioning into the total project cost avoids surprises after the machine lands.