Engineering Services

Are you facing problems with repair services to your scientific instruments?  
Do you perform periodic maintenance & upkeep of your sophisticated sensitive equipment such as SEM EDAX, FIB, TEM, AFM and many others?
Did you wonder why your instruments cannot function up to optimized performance?
Have you given a thought on the devastating effects of external EMF noise and mechanical vibration?
Is your Vacuum Pump taking abnormally long time, noisy and leaking oil?
Are you searching for Reliability Testing Service which will allow you to package them as one completed back-end Quality Assurance cycle?


Quasi-S Engineering division consists of teams of specialists with vast experiences in three major roles:

  1. Equipment installation, calibration, buy-off, evaluation, trouble shooting and preventive maintenance.

  2. EMF noise and vibration elimination, Vacuum Pump preventive and corrective maintenance, UPS installation and battery replacement and many more.

  3. Provide customized solution and tailor to the need in overcoming customers' problems. Unlike any common engineering services available in the market, we specifically focus only on projects that sync with our expertise.

  4. 3D CAD design and drafting services (using latest Autodesk Inventor) to clients

    •  For complicated and sophisticated mechanical structures that require in-depth visualisation.

    •  For "Reverse Engineering", mainly for parts that are EOL and no longer available.

Below are examples of Engineering projects and several drafting assignments we have undertaken. The list is exhaustive somewhat, but due to customer proprietary requirement the examples shown is limited. 

Please Contact us at  if you have similar problems that require solutions. We will be glad to provide suggestions and free consultation.

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3-D AutoDesk Designs and Draftings Services
With years of engineering project experiences, our team of mechanical engineering designers have undertaken and worked with multiple industry partners. From machine components to nano instrument stages to jigs and fixtures, we are well equipped to provide comprehensive and timely solution and services. Below are some examples:

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Pump Overhaul Services
Quasi-S provides overhaul and repair services on various vacuum pumps such as turbo pumps, dry/scroll pumps, rotary pumps, etc. And we are specialized in Agilent, Edwards and Ulvac Pumps.
Our engineers are trained in various vacuum systems to provide comprehensive service and repair for our customers. We ensure complete service kit of gaskets, filters, oil replacement up to vacuum level testing to performed at every request.
During final test, we will monitor total pressure, temperature, vibration and noise level of the pumps. Upon request, we can provide our customers with pump down graph.


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In-situ Heater Stage For Scanned Electron Microscope (SEM)
Quasi-S in-situ heater stage is a high temperature heating module for material handling experiments in combination with microscopic observation. SEM sample holder with in-situ heater capabilities for SE imaging. It is designed to allow universal handling of various specimens. The heater can be mounted on the stage of a SEM like a regular sample. A K-type thermocouple allows the measurement of the temperature at the specimens. The temperature can be observed and controlled by PID temperature controller.
This in-situ heater stage provides sample heating up to 300⁰C and the system consists of:
  • Heater stage with K type thermocouple, cartridge heater and dovetail base holder
  • Flange with feed through
  • Temperature controller module

Stage stage1

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Customized Vacuum Modules & Systems
(A) Substrate Holder
• High oxidation resistance material
• Z travel (max 12”)
• X/Y travel (max ±1”)
• Sample (max 6”)
• Heating temperature (max 1000°C)
• Force cool (Option)
• Motorised (Option)
(B) Target Holder
• Max 5 target
• Rotation (max 30rpm)
• Forward/Reverse rotation
• Z travel (max 2”)
• X/Y travel (max ±1”)

Services2 Services1

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Electromagnetic, Vibration & Acoustics
Quasi-S offers site survey services using high precision Analysis System. The standard survey provides data about a proposed site for equipment such as a Scanning Electron Microscope and other equipment which is sensitive to environmental conditions.
We measure magnetic fields and floor vibrations in X, Y and Z directions and acoustic levels in units appropriate for direct comparison with the environmental specifications of the equipment to be installed.
The latest equipment on the market requires low levels of magnetic field and magnetic field gradients and we can uniquely able to offer surveys measuring the field simultaneously to obtain this gradient information for both DC and AC fields.
We are also able to provide technical solutions and customized designs to cancel or minimize environmental interference affecting your work area and equipment.

Engineering services Electromagnetic, Vibration & Acoustics

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Noise Reduction Enclosure
Another project successfully undertaken by Quasi-S.
This simple, cost effective enclosure not only helps our client to reduce health hazard due to noise generated by over 40 pumps,
but the external casing creates neatness in the factory 5S initiative.

Project - DB reduction2

Project - DB reduction3

With the enclosure Temperature  peaked at 49°C and remained constant after 8hrs of continuous operation.

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