ASTI is a Singapore-based cleanroom and M&E contractor specialising in the design, construction and commissioning of GMP-compliant pharmaceutical and biotechnology cleanrooms. We deliver controlled environments built to meet regulatory certification and audit requirements — engineered, built and validated end to end by a single contractor. ASTI has delivered GMP cleanrooms for pharmaceutical and biotech manufacturers across Singapore and Southeast Asia.
What GMP cleanroom construction demands
A pharmaceutical cleanroom must do more than meet a cleanliness class — it must satisfy Good Manufacturing Practice (GMP) and stand up to regulatory inspection and audit. That means precise contamination control, validated environmental performance, and complete documentation that traces the facility from design through to qualification.
Building to GMP requires deep coordination between architecture, HVAC, utilities and process flow: pressure cascades, HEPA filtration, controlled personnel and material movement, and cleanable finishes all have to work together. Any gap can mean a failed inspection, costly rework, or delayed product release.
GMP cleanroom grades and standards
Pharmaceutical cleanrooms are classified by GMP grade — Grade A to Grade D under EU GMP Annex 1 — which correspond to ISO 14644 cleanliness classes for particle control. Grade A covers the most critical zones, such as aseptic filling, while Grade D supports less critical support areas. ASTI designs and builds across the full range, aligning each space to its process requirements and to the standards relevant to the client’s markets, including Singapore’s Health Sciences Authority (HSA) and international audit expectations.
ASTI’s approach: one contractor, end to end
ASTI’s advantage on pharmaceutical projects is integration. Rather than splitting the cleanroom, the M&E services and the process utilities across separate contractors — each with its own interfaces and finger-pointing risk — ASTI delivers the full scope in-house:
- Cleanroom design and build — GMP-compliant controlled environments engineered to the required grade, from concept and detailed engineering through to handover.
- Mechanical & electrical (M&E) services — HVAC, HEPA filtration, pressure cascades, chilled water and electrical systems engineered for stable, validated cleanroom performance.
- Process utilities and hook-up — clean and process gas, water systems and equipment connections that support pharmaceutical and biotech production.
This single-accountability model removes the coordination gaps that cause delays and compliance risk, and gives the client one responsible party from empty shell to qualified handover.
Built for qualification, validation and audit
GMP facilities have to be proven, not just built. ASTI designs and constructs cleanrooms to support the full commissioning and qualification process — Design, Installation, Operational and Performance Qualification (DQ, IQ, OQ, PQ) — and delivers the documentation regulators and auditors expect. The result is a facility that is ready for certification and inspection from handover, not one that needs remediation to pass.
Our pharmaceutical cleanroom capabilities
- GMP grades: Grade A to Grade D (EU GMP Annex 1), aligned to ISO 14644 cleanliness classes
- Design and build: facility planning, detailed engineering, construction, fit-out, commissioning and qualification support
- M&E services: HVAC, HEPA filtration, pressure cascades, chilled water and electrical systems for validated performance
- Process utilities: clean and process gas, water systems and equipment hook-up
- Compliance: built for HSA, GMP and international audit and certification requirements
- Sectors served: pharmaceutical, biotechnology, biologics, sterile manufacturing and medical devices
- Track record: over 25 years delivering critical facilities across Singapore and Southeast Asia
Project references and examples are available on request, under NDA. Contact us to discuss your facility requirements and see relevant work.
Why this matters for facility owners
Pharmaceutical and biotech manufacturers in Singapore and across Southeast Asia operate under intense regulatory scrutiny and tight project timelines. Choosing a contractor who can design, build and commission a GMP cleanroom as one integrated scope — with in-house M&E expertise and a clear path through qualification and validation — reduces compliance risk, shortens the programme and protects time to product release. With over 25 years of experience and cleanrooms delivered from ISO Class 1 to ISO Class 100,000, ASTI brings that combined capability to pharmaceutical projects in the region.
ASTI designs and builds GMP-compliant pharmaceutical and biotechnology cleanrooms across Singapore and Southeast Asia. We also specialise in semiconductor cleanroom construction for wafer-fabrication facilities. Contact us to discuss your facility requirements.
Frequently Asked Questions
What is a GMP cleanroom?
A GMP cleanroom is a controlled environment built to Good Manufacturing Practice standards for pharmaceutical, biotech or medical-device production. Beyond meeting a cleanliness class, it must deliver validated environmental performance and full documentation so the facility can pass regulatory inspection and audit.
What GMP grades do pharmaceutical cleanrooms use?
Pharmaceutical cleanrooms are graded A to D under EU GMP Annex 1, corresponding to ISO 14644 cleanliness classes. Grade A covers the most critical aseptic zones; Grade D supports less critical areas. ASTI designs and builds across the full range, matched to each process step.
Can one contractor design, build and validate a GMP cleanroom?
Yes. ASTI delivers the cleanroom, its M&E services and process utilities in-house, under a single contractor, and builds to support the full commissioning and qualification process (DQ, IQ, OQ, PQ). This single-accountability model removes the interface and compliance risks of splitting the work across separate firms.
How does ASTI ensure a cleanroom passes regulatory audit?
ASTI designs and constructs to GMP and ISO 14644 requirements, engineers stable validated performance into the HVAC and utilities, and delivers the documentation regulators and auditors expect — so the facility is ready for certification and inspection at handover.
Which sectors does ASTI build GMP cleanrooms for?
ASTI builds GMP-compliant cleanrooms for the pharmaceutical, biotechnology, biologics, sterile-manufacturing and medical-device sectors across Singapore and Southeast Asia.
ASTI is a Singapore-based cleanroom and M&E contractor specialising in the design, construction and commissioning of semiconductor cleanrooms. We deliver controlled environments from ISO Class 1 to ISO Class 100,000 — engineered, built and validated end to end by a single contractor. ASTI has delivered semiconductor cleanrooms for global wafer-fabrication manufacturers across Singapore and Southeast Asia.
What semiconductor cleanroom construction demands
A semiconductor cleanroom is one of the most demanding controlled environments to build. It requires contamination control to a strict ISO class, precise HVAC and airflow engineering, and tight integration with the process equipment and utilities it serves — all delivered on time-sensitive programmes where delays carry significant cost.
The guiding principle is simple: build a room that is clean from the outset, rather than trying to clean it after construction. Achieving that takes disciplined planning, phased construction and deep experience with the interdependent systems that keep a fab running.
ASTI’s approach: one contractor, end to end
ASTI’s advantage on semiconductor projects is integration. Rather than splitting the cleanroom and its supporting services across separate contractors — each with its own interfaces and finger-pointing risk — ASTI delivers the full scope in-house:
- Cleanroom design and build — controlled environments engineered to the required ISO class, from concept and detailed engineering through to testing, commissioning and validation.
- Mechanical & electrical (M&E) services — HVAC, chilled water, electrical and process-utility systems engineered for cleanroom performance and energy efficiency.
- Supporting sub-fab and hook-up works — the gas, chemical, ultrapure-water and exhaust systems beneath and around the cleanroom that tie production equipment into the facility.
This single-accountability model removes the coordination gaps that typically cause delays on fast-paced fab projects, and is what lets ASTI hold responsibility for the cleanroom from empty shell to qualified handover.
Phasing for contamination control
Meticulous planning and phasing are central to clean delivery. ASTI segregates construction into distinct stages — each with its own protocols and controls — so contamination is minimised as the build progresses and the environment is clean at handover, not cleaned afterward. This disciplined, phased approach is what makes demanding ISO classes achievable on tight semiconductor timelines.
Our semiconductor cleanroom capabilities
- Cleanroom classes: ISO Class 1 to ISO Class 100,000, designed to the requirements of each process step
- Design and build: facility planning, detailed engineering, construction, fit-out, testing, commissioning and validation
- M&E services: HVAC, chilled water, electrical and process-utility systems engineered for cleanroom performance
- Supporting systems: gas and chemical distribution, ultrapure water, exhausts and equipment hook-up
- Full project lifecycle: from concept design to turnkey delivery and ongoing maintenance
- Sectors served: semiconductor, pharmaceutical, biotechnology and aerospace
- Track record: over 25 years delivering critical facilities across Singapore and Southeast Asia
Project references and examples are available on request, under NDA. Contact us to discuss your facility requirements and see relevant work.
Why this matters for facility owners
Semiconductor manufacturers in Singapore and across Southeast Asia are expanding capacity under intense time pressure. Choosing a contractor who can design, build and commission the cleanroom as one integrated scope — with in-house M&E and contamination-control expertise — reduces interface risk, shortens the programme and protects the production schedule. With over 25 years of experience and cleanrooms delivered from ISO Class 1 to ISO Class 100,000, ASTI brings that combined capability to semiconductor projects in the region.
ASTI designs and builds semiconductor cleanrooms across Singapore and Southeast Asia. Contact us to discuss your facility requirements.
Frequently Asked Questions
What is involved in semiconductor cleanroom construction?
Semiconductor cleanroom construction involves designing and building a controlled environment to a strict ISO class, with precise HVAC and airflow, integrated M&E and process utilities, and phased contamination control throughout the build. ASTI delivers all of this end to end, from concept design through to testing, commissioning and validation.
What ISO cleanroom class do semiconductor fabs need?
Semiconductor fabrication typically requires the strictest cleanroom classes, often ISO Class 1 to ISO Class 5 (Class 1 to Class 100), depending on the process step. ASTI designs and builds cleanrooms across the full range, from ISO Class 1 to ISO Class 100,000.
Can one contractor design, build and commission a semiconductor cleanroom?
Yes. ASTI delivers the cleanroom, its M&E services and the supporting sub-fab and hook-up works in-house, under a single contractor. This single-accountability model removes the coordination gaps and interface risks that arise when these scopes are split across separate firms.
How does ASTI control contamination during construction?
ASTI segregates the build into distinct, phased stages, each with its own contamination-control protocols, so the environment is built clean from the outset rather than cleaned afterward. This phased approach is essential on time-sensitive semiconductor projects.
Which sectors does ASTI build cleanrooms for?
ASTI builds cleanrooms and critical facilities for the semiconductor, pharmaceutical, biotechnology and aerospace sectors across Singapore and Southeast Asia.
ASTI in the press
ASTI’s cleanroom expertise has been featured in Cleanroom Technology, where our management team discusses semiconductor cleanroom and sub-fab construction:
