Office Disinfection Services Singapore

We are the leading NEA-approved and certified disinfection services company in Singapore.

Is your office truly clean and germ-free — or could you be putting your employees’ health at risk? Maintaining a hygienic workspace is more important than ever. That’s why professional office disinfection services in Singapore are essential — they ensure your environment is safe, healthy, and compliant with national health standards.

Our office disinfection services are endorsed and accredited by the National Environment Agency (NEA), the Ministry of Health (MOH), and the Environmental Management Association of Singapore (EMAS). We also operate under bizSAFE Star certification and follow the ISO 9001:2015 Quality Management System to guarantee consistency and safety in every project.

We provide professional disinfection and sanitization services for offices, homes, restaurants, schools, and industrial facilities. Protect your team, customers, and loved ones today with certified disinfection you can trust.

Looking for the Top Cleaning Company in Singapore?

Need a reliable disinfection service provider for your office? We are Singapore’s leading office and commercial cleaning company, powered by a team of professional, WSQ-trained cleaners.

Contact Green Garden now, for Commercial, Industrial or Medical Facility or Office Cleaning and if you are looking for a Cleaning Contractor.

Our certified cleaners understand that keeping your workplace safe goes beyond just cleaning visible surfaces. We use the latest disinfection technology, including electrostatic sprayers, HEPA-filtered equipment, and UV-C light sterilization, to eliminate harmful germs and viruses.

With NEA approval, MOH endorsement, and EMAS membership, our disinfection processes meet Singapore’s highest hygiene and safety standards — ensuring your office remains truly clean, healthy, and germ-free.

Our Step-by-Step Disinfection Process

Step 1: Site Evaluation & Scope Definition

Every job starts with a detailed on-site evaluation. Our supervisor conducts a risk-based assessment to determine the infection control level required — Routine, Preventive, or Confirmed Case Disinfection.

We identify and record all high-touch points within the premises, which typically include:

Entrance & access points: Door handles, push plates, biometric scanners, lift buttons, turnstiles.
Office areas: Keyboards, telephones, mouse devices, desks, chairs, light switches.
Meeting & shared zones: Table surfaces, remote controls, whiteboards, projectors.
Pantry & break areas: Fridge handles, coffee machines, microwaves, and water dispensers.
Washrooms: Taps, flush buttons, cubicle locks, hand dryers, soap dispensers.
Industrial or warehouse spaces: Equipment levers, trolleys, control panels, and hand tools.

Each zone is classified by contact frequency (high/medium/low) to decide the chemical concentration and method to be applied later.
All observations are logged in a Pre-Treatment Inspection Form to maintain transparency and traceability.

Step 2: Surface Preparation & Area Safety

Before any chemical is applied, we ensure the workspace is secure and ready for treatment.

Sensitive electrical items, documents, or food-contact surfaces are covered or removed.
Windows and ventilation systems are opened or set to fresh air mode.
Our technicians wear full Personal Protective Equipment (PPE) — including N95 masks, nitrile gloves, disposable gowns, and safety goggles.
Safety cones and barricade tapes are placed to restrict access during treatment.

A pre-cleaning process follows, using neutral detergent (pH 6–8) or multi-enzymatic cleaners to remove visible dust, dirt, and grease.
This step is critical — organic residue can neutralize disinfectants if not removed properly.
Microfiber cloths (with a 70/30 polyester-to-polyamide blend) are used to ensure maximum debris removal and lint-free cleaning.

Step 3: Application of NEA-Approved Disinfectants

We only use disinfectants approved under NEA’s Interim List for effective control of coronaviruses and other pathogens.
Common formulations include:

Sodium hypochlorite (0.1–0.5%) — effective for general hard surfaces, tiles, and metal handles.
Hydrogen peroxide (0.5%) — used for sensitive areas like keyboards, screens, and laminated furniture.
Benzalkonium chloride (0.05–0.2%) or other quaternary ammonium compounds (QACs) — for routine preventive disinfection.
70% Isopropyl alcohol — ideal for phones, computer peripherals, and stainless steel.

Each disinfectant is prepared fresh daily, labelled, and tracked by batch number, expiry date, and dilution ratio to maintain chemical stability.
Our solutions achieve ≥99.99% pathogen reduction (EN 1276 & EN 14476 standards).

Step 4: Application Methods & Equipment Used

Depending on site size and risk level, we deploy one or more of the following methods:

Manual wipe-down: For targeted cleaning on high-touch surfaces. Each cloth is used on a maximum of 10 m² before replacement.
Electrostatic spraying: Charged micro-droplets (<50 microns) wrap around curved and hard-to-reach areas, ensuring even coverage.
ULV (Ultra-Low Volume) fogging: Used for large spaces (>200 m²). Particle size ranges between 10–30 µm, allowing fine mist dispersion that settles evenly on all surfaces.
Thermal misting (optional): For industrial spaces requiring deep penetration and higher temperature tolerance.

During application, we maintain a minimum wet contact time of 10–15 minutes to allow full germicidal activity.

Step 5: Dwell Time & Ventilation

After application, disinfected areas are left undisturbed for 15–30 minutes depending on chemical type and manufacturer’s specifications.
This ensures maximum contact with pathogens.
Ventilation systems are activated to clear chemical vapors safely, maintaining indoor air quality within NEA standards (<0.1 ppm residual chlorine or VOC levels).

Surfaces are not wiped prematurely — premature wiping can reduce efficacy by up to 30%.

Step 6: Optional Air & Surface Sterilization Enhancements

For high-sensitivity environments (clinics, childcare centres, or F&B facilities), we provide advanced add-on treatments:

UV-C light sterilization (254 nm wavelength) — kills airborne and surface microbes that chemical spraying may miss.
HEPA-filter air scrubbers — remove residual aerosol particles down to 0.3 microns.
Antimicrobial surface coating (lasting 90–180 days) — creates an invisible protective layer that continues killing germs long after disinfection.

Step 7: Quality Inspection & Verification Tests

Our supervisor performs a final inspection once all areas are dry.
We conduct:

ATP (Adenosine Triphosphate) bioluminescence testing — ensures surfaces fall below 200 Relative Light Units (RLU), the accepted hygiene threshold.
Spot audits using swab kits on high-touch points (e.g., door handles, switches, desks).
Visual inspection checklist verifying no chemical residues, streaking, or missed zones.

Clients receive a Disinfection Verification Report with before/after photos and ATP readings for accountability.

Step 8: Documentation & Certification

After completion, we provide:

A Certificate of Disinfection & Treatment Summary
MSDS (Material Safety Data Sheets) for all chemicals used
Service Completion Checklist signed by both client and supervisor
Recommendations for ongoing cleaning frequency (e.g., daily, weekly, or monthly disinfection schedule)

All records are stored securely for at least 12 months, ensuring full traceability for NEA or MOH audits.

Our Compliance & Accreditation

WSQ-Certified Cleaners trained in environmental hygiene, chemical handling, and incident response.
NEA-Approved Disinfection Provider
MOH-Endorsed Infection Control SOPs
bizSAFE Star Certified Workforce
ISO 9001:2015 (Quality Management System)
EMAS (Environmental Management Association of Singapore) Member

Certified Disinfection You Can Trust

At Green Garden, we combine science-based cleaning methods, certified disinfection products, and WSQ-trained professionals to deliver measurable hygiene results for your premises. Our team follows strict NEA, MOH, and ISO 9001:2015 standards, ensuring every surface is disinfected to the highest level of safety and compliance.

With years of proven experience in commercial cleaning and infection control, we’ve helped businesses, schools, restaurants, and offices across Singapore maintain safe, healthy environments for staff and visitors alike.

Protect your workplace today — Call 8488 5000 or request a free on-site hygiene assessment with our certified specialists.

Let us help you build a cleaner, safer, and more resilient workspace that meets national health and environmental standards.

Conclusion

Choosing a reliable disinfection service is key to keeping your space clean and safe. A lot of top office disinfection service in Singapore, stands out with their quality and safety. They use the latest technology and eco-friendly products, ensuring your space is well-protected.

They also has expert technicians and custom service plans for each client. This means your space gets the best care against harmful germs. By hiring a professional for your office disinfection, you’ll see a big difference in cleanliness and feel more at ease, helping your business succeed

Rates typically range from SGD $14–$25 per cleaner-hour, driven by GFA, frequency, and service scope. Contractors estimate coverage using a Manhour Productivity Index (MPI) of about 400–600 sq ft per cleaner-hour for routine maintenance.

Small offices (≤1,000 sq ft): ~1 cleaner × 2 hrs/day, 5×/week → roughly $300–$500/month.
Medium (1,001–3,000 sq ft): typically $500–$800/month depending on task frequency and add-ons.
Large (>3,000 sq ft): from $1,000–$1,800+/month; affected by after-hours work, pantry/washroom load, and mechanization.

Spec upgrades: HEPA H13 filtration (99.97% @ 0.3µm), microfiber systems, ISO 9001/14001 QMS, bizSAFE Star WSH, and ATP verification can justify premium pricing.

Use a staged method with the correct chemistry, dwell time, and verification.

Pre-clean: Neutral detergent (pH 6.5–7.5) to remove organic load that can cut disinfectant efficacy by up to 70%.
Disinfect: Apply ~1,000 ppm sodium hypochlorite (0.1% NaClO) or a QAC product; maintain 3–5 minutes contact time.
Chemical volume: About ~20 mL/m² wetting on high-touch zones (handles, switches, lift buttons, phones, pantries).
Verification: ATP bioluminescence target typically <200 RLU after process completion.
Safety & ventilation: PPE (nitrile gloves, eye protection, N95) and airflow around ~12 ACH when fogging/misting.

Note: Mix solutions fresh daily; allow air-dry where specified to preserve stated log-reduction performance.

For standard offices, expect ~1,000–1,200 sq ft in 2 hours including vacuum/mop, workstation wipes, pantry touchpoints, and restroom sanitization.

Manual tools: ~500–600 sq ft/hour.
Mechanized (backpack vac, auto-scrubber): up to 800–1,000 sq ft/hour.
Quality control: QMS checklists (≥90% completion) and periodic ATP swabs on high-touch points.

Exception: Washrooms/food-prep zones run slower (−30–40%) due to extra dwell times and sanitization steps.

Disinfection levels map to target organisms and expected log reduction.

Low-level (LLD): e.g., ~500 ppm NaClO or 0.05% QAC; vegetative bacteria/lipid viruses; floors/general surfaces. (~3-log target)
Intermediate-level (ILD): 70% IPA or ~1,000 ppm NaClO; fungi, mycobacteria, most viruses; desktops/switches. (~5-log)
High-level (HLD): 2% glutaraldehyde / vaporized H₂O₂; for healthcare/lab contexts. (~6-log)

For broad-spectrum control, sodium hypochlorite at ~1,000–5,000 ppm with correct dwell time can achieve up to ~6-log reductions. Choice depends on surface compatibility and safety.

Electrostatic spraying: Charged droplets wrap 360°; typically cuts chemical use by ~35% while improving surface coverage.
Hydrogen peroxide fogging: 5–8% H₂O₂ for terminal cycles; validated with biological indicators.
UV-C: ~254 nm exposure for 10–15 minutes for adjunct surface/air risk reduction.

Always confirm: SDS, surface compatibility, and calibrated ppm before deployment.

A simple, standards-aligned sequence improves outcomes and consistency.

Step 1 — Clean: Microfiber + neutral detergent (pH ~7); split fiber improves soil removal up to ~40% vs cotton.
Step 2 — Rinse: Remove detergent residues; return surface to neutral pH for optimal disinfectant activity.
Step 3 — Disinfect: e.g., ~1,000 ppm NaClO with ~5 min contact time, per label.

Supports NEA-aligned SOPs, ISO 9001 QMS documentation, and WSH/bizSAFE controls.

The 20/10 cycle (20 minutes focused work + 10 minutes recovery) helps maintain quality, reduce repetitive strain, and standardize zonal rotations in large floors (e.g., 3,000–10,000 sq ft).

Use case: Reception → open plan → meeting rooms → pantry → washrooms, each within a timed block.
Outcome: More consistent audit scores and steadier output across shifts.

Match frequency to headcount, density, footfall, and risk profile.

Daily: High-touch disinfection; workstations; pantries; washrooms; bins.
Weekly: Edge/detail dusting; glass spot-clean; upholstery/carpet vacuum with HEPA.
Monthly–Quarterly: Machine scrub for hard floors; carpet shampoo extraction; vents/diffusers; window glass.
Verification: Periodic ATP checks with targets typically <200 RLU.

Rule of thumb: Densities above ~1 person per 10 m² usually need daily disinfection of shared touchpoints.

Singapore insights and quick statistics

Humidity load: ~70–90% Relative Humidity year-round accelerates dust mite and biofilm growth; regular microfiber + HEPA control helps.
Planning density: ~8–12 m² per person typical; higher density → higher touchpoint frequency.
Filter hygiene: Many offices service AHU/FCU filters every 1–3 months to stabilize airflow and reduce particulates.

Benchmark note: Final scope should be set after a site walk, headcount tally, and productivity study.

Ready to plan a compliant, data-driven cleaning program? Call 8488 5000 to schedule a site assessment and get a transparent quotation.

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