Coastal Instrument


Coastal Instruments                            

Mass Flow Controller Specialists SINCE 1980

Coastal Instruments is a North Carolina based company started in 1980. We are a service oriented company, dedicated to developing long term partnerships with our customers throughout the world. Our technology, reliability and integrity, have made us the recognized leader in the calibration of flow and pressure measurement devices. Here is a brief list of devices and manufacturers we can repair/recalibrate:



Mass Flow Controllers
Pressure Controllers
Capacitance Manometers
Diaphram Gauges
Vacuum Gauges
Pressure Gauges
Power Supplies


Advanced Energy (Aera)
Alicat Scientific


Celerity (Unit)
Hitachi Metals
Millipore (Tylan)
Mykrolis (Tylan)


Qualiflow (ASM)
Sierra Instruments
Unit Instruments
Vacuum General








We encourage our customers to provide us with any feedback to ensure we consistently meet their requirements.

Coastal Instruments makes every effort to comply with U.S. Export Administration Regulations.




Service Levels


24 Hour Expedite Service

When you have a deadline to meet, Coastal Instruments’ Expedite Service is there to keep you on schedule. Your mass flow controller will be shipped back to you the following working day.

  • Additional fee
  • Saturday delivery is available in most areas.

10-15 Working Day General Service

When you do not require emergency service, our 10 to 15 Working Days General Service is perfect for those who want to rely on steady production scheduling, synchronized deliveries or delivery of less critical shipments.

Build Programs

Coastal Instruments reconditioned mass flow controllers are dependable, accurate and economical. Our Reconditioned mass flow controllers are assembled by our specialists to meet stringent requirements and procedures set by our company, and are backed by our 100% Unconditional Satisfaction Warranty.

We have a large inventory of most popular models including the recently discontinued Legacy products from Unit/Kinetics/Celerity, Tylan/Millipore/Mykrolis, and Brooks Instruments. If you don’t see what you need on our list of products please contact us with your specific need.


For Next Day Delivery with our Build mass flow controllers, call by 9:30 AM E.S.T. We will build and calibrate a mass flow device to your specifications and deliver it on your receiving dock the next morning.




Services Provided for Customers


  • Repair, Calibration & Range Changes performed by factory trained technicians of mass flow controllers and pressure/vacuum transducers, backed by our 100% UNCONDITIONAL SATISFACTION WARRANTY.
  • Expedited service including 3 day RUSH and 24-Hour Service for emergencies is available for an additional fee. Call us for details.
  • General Service 10 to 15 working day turn-around
  • Calibration data accredited to ISO 17025 is available
  • Sales and Service of N.I.S.T Traceable and ISO 17025 Accredited Transfer Standards
  • Technical Information on the use, operation, and troubleshooting of mass flow controllers
  • Sales and Service of refurbished mass flow controllers including recently discontinued Legacy products by Unit Instruments/Celerity, Tylan/Millipore/Mykrolis, and Brooks Instrument
  • Sales and service of Power Supplies, read out boxes and power/data cables
  • Sales of electrical adapters, gender changers, and break out boards for most models
  • Purchase of used mass flow controllers & associated equipment from customers and associates.
  • Certificate of Calibration with service report information.
  • Telephone Consultation available SEVEN DAYS A WEEK, 24 HOURS A DAY.

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