Complete Guide to Haze and Construction Site Air Quality Monitoring Malaysia

Complete Guide to Haze and Construction Site Air Quality Monitoring Malaysia

1. Introduction - Haze and Construction Site Air Quality in Malaysia

Haze and construction site air quality monitoring in Malaysia are important considerations for construction contractors, civil engineering companies, HSE Safety Officers, industrial employers and facility management teams.

Regional haze can affect outdoor workers, construction site offices, factories, warehouses and other occupied buildings. At the same time, construction activities such as excavation, demolition, concrete cutting, earthmoving and vehicle movement can create local airborne dust.

These two sources of pollution may occur simultaneously, but they should not be treated as identical.

A practical monitoring programme begins by understanding the difference between Malaysia's official Air Pollutant Index (API/IPU) and locally measured PM2.5 and PM10 concentrations.

It also requires appropriate workplace risk assessments, suitable control measures and equipment selected for the intended monitoring task.

This comprehensive guide explains:

• The difference between regional haze and construction dust

• PM2.5, PM10, CO2, HCHO and TVOC measurements

• Malaysia's DOSH 2026 workplace haze guidance

• Official DOE API/IPU information

• Haze precautions for outdoor construction workers

• Monitoring temporary site offices and industrial facilities

• Applications in factories, warehouses and data centres

• Air purifier and ventilation observations

• Temtop monitor selection

• Common monitoring mistakes and troubleshooting

MTM Precision Sdn Bhd supplies Temtop air quality monitoring equipment for construction, industrial and commercial applications throughout Malaysia.

2. What Causes Haze in Malaysia?

Regional haze can arise when smoke and fine airborne particles are transported across populated areas.

The composition and severity of haze vary according to pollution sources, atmospheric conditions and the movement of air masses.

Fine particles associated with smoke can remain suspended and travel over substantial distances.

Haze may affect:

• Outdoor construction projects

• Highway and infrastructure works

• Industrial maintenance operations

• Surveying and engineering fieldwork

• Temporary site offices

• Manufacturing facilities

• Warehouses and logistics centres

• Commercial offices and occupied buildings

Employers should monitor official haze information rather than assuming that local visibility alone provides a complete assessment of particulate pollution.

Haze conditions can change over time, and monitoring decisions should account for both official regional information and actual workplace conditions.

3. Regional Haze vs Construction Site Dust

Regional haze and construction site dust may both contribute to airborne particle concentrations, but they can originate from different activities.

Regional haze often involves fine combustion-related particles.

Construction dust may be generated by excavation, earthmoving, cutting, grinding, demolition, vehicle movement and material handling.

A portable PM2.5 or PM10 monitor may show increased particle concentrations near either source.

However, an optical particulate monitor cannot reliably determine the chemical composition or origin of every measured particle.

For example, a PM10 increase near an earthmoving operation does not prove that all measured particles originate from that activity.

Similarly, a high PM2.5 reading during haze does not identify the specific chemical constituents of the particles.

Where construction work involves respirable crystalline silica, formal exposure assessment requires specialised sampling and analytical methods.

General-purpose PM2.5 and PM10 readings must not be represented as certified silica exposure measurements.

4. Understanding PM2.5 and PM10 Measurements

PM2.5 refers to particulate matter with an aerodynamic diameter of 2.5 micrometres or smaller.

PM10 refers to particulate matter with an aerodynamic diameter of 10 micrometres or smaller, including the PM2.5 fraction.

Both are commonly reported in micrograms per cubic metre (µg/m³).

PM2.5 is an important parameter during smoke and regional haze episodes.

PM10 provides information about a broader particle fraction that may also be affected by construction dust and soil disturbance.

Portable optical monitors estimate particle concentrations using sensor measurements and conversion algorithms.

Their results can be affected by humidity, particle properties, airflow, instrument condition and other operating factors.

Measurement range, resolution and accuracy are different specifications.

For example, an instrument displaying values in 0.1 µg/m³ increments is not necessarily accurate to ±0.1 µg/m³.

Users should review the manufacturer's published accuracy conditions before interpreting small differences between readings.

5. Official Malaysia API/IPU vs Portable PM2.5 Readings

Malaysia's Air Pollutant Index (API), also called IPU, is published by the Department of Environment (DOE) through its official Air Pollutant Index Management System (APIMS).

The API is an index, not a direct concentration reading in µg/m³.

By contrast, a Temtop PM2.5 monitor measures local particulate concentration near the instrument.

These two measurements must not be confused.

For example:

Portable PM2.5 reading: 100 µg/m³.

Official Malaysia API: A separately published index value obtained through DOE APIMS.

A PM2.5 concentration of 100 µg/m³ does not automatically mean that the official API is 100.

Similarly, an instrument-generated AQI indication is not necessarily equivalent to Malaysia's official API.

Official API reporting may also use pollutant-specific index calculations and defined averaging periods.

Construction contractors should use DOE APIMS for official haze information.

Portable monitors can supplement that information by helping users investigate local air quality conditions at suitable measurement points.

Official information: https://apims.doe.gov.my/

6. Malaysia DOSH 2026 Haze Guidelines for Workplaces

Malaysia's Department of Occupational Safety and Health (DOSH) lists the Guidelines for the Protection of Employees Against the Effects of Haze at Workplaces, Second Edition 2026.

The updated guidance provides an official reference for workplace precautions during haze conditions.

Employers should assess the risks associated with their activities and consider the current official API, work intensity, exposure duration and employee vulnerabilities.

Relevant workplace considerations include:

• Outdoor work requirements

• Physically demanding activities

• Employees who may be more susceptible to haze

• Visibility-sensitive operations

• Construction vehicles and heavy machinery

• Crane and lifting operations

• Respiratory protection

• Indoor rest areas

• Communication with employees

• Work scheduling and operational controls

The appropriate measures depend on the applicable guidance and the actual work being performed.

A portable PM2.5 monitor does not determine official API-based work restrictions or establish legal compliance.

Employers should consult the full 2026 DOSH document for its precise recommendations, activity restrictions, thresholds and exceptions.

The current guideline should be reviewed directly rather than relying on unverified summaries of previous editions.

Official document: https://dosh.gov.my/wp-content/uploads/2026/10/GARIS-PANDUAN-JEREBU-14.10.2026.pdf

7. Haze Safety for Outdoor Construction Workers

Outdoor construction workers may spend long periods performing physically demanding tasks.

Activities such as earthmoving, road construction, surveying, material handling and infrastructure maintenance can increase breathing rates and may increase exposure to polluted air during haze.

Employers should consider:

• Current official API conditions

• Type and intensity of work

• Duration of outdoor exposure

• Individual health vulnerabilities

• Visibility at the work location

• Available rest facilities

• Appropriate protective measures

HSE personnel should communicate changing conditions to affected workers.

Where respiratory protection is required, it should be selected according to the actual hazards and applicable occupational safety requirements.

A general-purpose PM2.5 monitor cannot determine whether a particular respirator is suitable.

Portable particulate measurements can provide supplementary local observations, but workplace precautions must be based on the broader risk assessment and official guidance.

8. Construction Site Dust and Air Quality Testing

Construction site dust can arise from excavation, demolition, cutting, grinding, soil movement and construction vehicle traffic.

A general-purpose PM2.5 and PM10 monitor can help contractors perform preliminary particulate screening at suitable locations.

Possible screening points include:

• Sheltered areas near temporary site facilities

• Occupied site administration rooms

• Site meeting rooms

• Selected building interiors

• Suitable locations near construction activities

Measurements should be conducted without interfering with machinery, vehicles or construction operations.

Temtop P600, Temtop M2000 2nd and Temtop LKC-1000S 2nd provide both PM2.5 and PM10 measurements.

However, these instruments should not be treated as certified personal dust samplers, weatherproof outdoor stations or silica exposure analysers.

Where a project specification requires formal environmental monitoring, equipment and methods must be selected according to that specification.

9. PM2.5 Monitoring for Temporary Construction Site Offices

Temporary construction site offices may experience fine particle infiltration through doors, windows, ventilation systems and frequent movement of workers.

During regional haze, indoor PM2.5 may change according to outdoor conditions, filtration, occupancy and local particle sources.

A compact indoor monitor can help project managers observe particulate trends in occupied rooms.

The Temtop M10i provides PM2.5, HCHO and TVOC measurements with WiFi and compatible app functions.

It is suitable for general indoor monitoring when the environment is within its operating limits.

The M10i does not measure PM10 or CO2.

For site offices where CO2 monitoring is required, the Temtop M10+ or M2000 2nd may be considered.

The M10+ combines PM2.5, CO2 and TVOC with temperature and humidity measurements.

Indoor PM2.5 monitoring should be interpreted alongside occupancy, ventilation and filtration conditions.

A low PM2.5 reading alone does not establish that ventilation is adequate.

10. Haze Monitoring for HSE Safety Officers

HSE Safety Officers may use supplementary air quality monitoring to investigate environmental trends and support internal workplace observations.

A practical HSE monitoring process includes:

Step 1: Check official DOE API information.

Step 2: Identify the work activity and potential hazards.

Step 3: Determine whether the objective is general screening or formal exposure assessment.

Step 4: Select an instrument with the required measurement parameters.

Step 5: Choose a safe and representative monitoring location.

Step 6: Follow the manufacturer's setup and stabilisation instructions.

Step 7: Record measurements together with environmental conditions.

Step 8: Review trends rather than relying on a single instantaneous reading.

Step 9: Consider appropriate workplace control measures.

Step 10: Arrange professional testing where required.

The Temtop M2000 2nd provides a useful combination of PM2.5, PM10, CO2 and HCHO for supplementary multi-parameter inspections.

Its USB CSV export function can assist with internal measurement records.

Such records are not automatically certified occupational exposure reports.

11. Factory Indoor Air Quality During Haze

Manufacturing facilities often contain different air quality environments.

An enclosed administration office may have mechanical air conditioning and filtration.

A production area may contain process-generated contaminants.

A maintenance workshop may experience dust from grinding, cutting or vehicle activity.

During regional haze, fine particles can enter buildings through openings and ventilation systems.

Temtop M10+ is relevant for occupied factory offices where PM2.5 and CO2 are both important.

Temtop LKC-1000S 2nd may be considered where PM2.5, PM10, HCHO and TVOC screening are required.

Temtop M2000 2nd is suitable for portable multi-parameter observations.

General-purpose air quality monitors do not replace contaminant-specific industrial hygiene assessment.

Factory managers should distinguish outdoor haze infiltration from process-generated occupational hazards.

12. Haze Monitoring in Warehouses and Logistics Facilities

Warehouses and logistics facilities may experience changing particulate conditions because of loading bay operations, outdoor traffic and frequent door opening.

During haze, outdoor fine particles may enter occupied indoor areas.

PM2.5 and PM10 monitoring can help facility managers observe general particulate trends near suitable warehouse locations.

The Temtop P600 provides focused PM2.5 and PM10 monitoring.

The M2000 2nd and LKC-1000S 2nd provide additional measurement functions.

For occupied warehouse offices, the M10+ may be useful where PM2.5 and CO2 measurements are required.

Monitoring should not interfere with forklift movements, vehicle traffic or other safety-critical activities.

Where diesel exhaust or other hazardous emissions are a concern, appropriate specialised assessment is necessary.

13. Data Centre Air Quality and Haze Monitoring

Data centres rely on controlled cooling, ventilation and filtration systems.

During regional haze, facility managers may wish to observe particulate changes in selected occupied support areas.

The Temtop M10+ can provide PM2.5, CO2, temperature and humidity information.

The Temtop M10i offers connected PM2.5 monitoring for suitable indoor environments.

The Temtop M2000 2nd can provide short-duration PM2.5 and PM10 screening at selected locations.

However, specialised data centre environmental specifications may require particle-counting methods, gas contamination assessments and other dedicated monitoring systems.

PM2.5 mass concentration is not equivalent to particle counts used in specialised cleanliness classifications.

General-purpose Temtop monitors should not be represented as substitutes for data centre contamination compliance testing.

Any monitoring activity should also comply with facility security, access and equipment safety requirements.

14. Indoor Air Purifiers, HVAC Filtration and Haze

Suitable filtration can help reduce indoor airborne particle concentrations.

During haze episodes, facility managers may use portable PM2.5 monitors to observe changes before and after operating air purifiers or adjusting filtration arrangements.

A practical comparison includes:

• Recording PM2.5 before filtration changes

• Noting room occupancy

• Recording door and window conditions

• Operating filtration equipment according to its instructions

• Allowing time for air circulation

• Repeating measurements under comparable conditions

Results depend on room size, filtration capacity, filter condition, airflow and outdoor particle infiltration.

A reduction in local PM2.5 does not establish certified filtration efficiency.

Air purifiers that recirculate indoor air also do not necessarily supply fresh outdoor air.

Where ventilation is a concern, a CO2-capable monitor such as the M2000 2nd or M10+ may provide additional information about occupied indoor conditions.

Particulate filtration and adequate ventilation are related but different requirements.

15. PM2.5, CO2, HCHO and TVOC - Understanding the Differences

Air quality monitors may include several different sensor types.

PM2.5: Fine airborne particulate concentration, commonly expressed in µg/m³.

PM10: A broader airborne particulate fraction, also expressed in µg/m³.

CO2: Carbon dioxide concentration, commonly expressed in ppm. In occupied indoor spaces, it can provide useful information about ventilation-related trends.

HCHO: Formaldehyde concentration. General-purpose measurements may support preliminary indoor chemical screening.

TVOC: Total volatile organic compound indication. A TVOC reading does not identify individual chemicals.

Temperature and humidity: Environmental conditions that can influence comfort, ventilation considerations and certain sensor readings.

No single parameter represents every aspect of indoor air quality.

For example, a low PM2.5 reading does not prove that formaldehyde levels are low.

Similarly, a low CO2 reading does not establish the absence of particulate pollution or hazardous industrial chemicals.

Instrument selection must follow the pollutants of interest.

16. Temtop M2000 2nd - Portable Multi-Parameter Air Quality Monitoring

The Temtop M2000 2nd is a handheld air quality monitor for general environmental screening.

Its measurement functions include:

• PM2.5

• PM10

• CO2, using an NDIR sensor

• HCHO

• Temperature

• Relative humidity

Published particulate measurement ranges include 0–999 µg/m³ for PM2.5 and PM10.

The CO2 measurement range is published as 0–5,000 ppm.

The instrument includes a colour display, rechargeable battery and USB CSV data export.

Typical applications include:

• HSE inspections

• Construction site offices

• Factory administration rooms

• Building maintenance

• General indoor air quality investigations

• Supplementary particulate observations

The M2000 2nd is not a weatherproof permanent outdoor station or certified personal occupational exposure sampler.

Published accuracy values apply under specified conditions and should not be extrapolated across the entire display range.

17. Temtop LKC-1000S 2nd - PM2.5, PM10, HCHO and TVOC

The Temtop LKC-1000S 2nd combines particulate monitoring with general indoor chemical screening.

Its principal measurements include:

• PM2.5

• PM10

• HCHO

• TVOC

• Temperature

• Relative humidity

The published PM2.5 and PM10 measurement ranges extend to 999 µg/m³.

The instrument supports USB data export according to the applicable manufacturer documentation.

Typical applications include:

• Construction site offices

• Renovated commercial offices

• Factory administration areas

• General particulate inspections

• Preliminary HCHO and TVOC screening

The LKC-1000S 2nd does not measure CO2.

Customers should also distinguish the LKC-1000S 2nd from separately marketed LKC-1000S+ 2nd variants.

Exact measurement ranges, software features and supplied accessories should be confirmed against the particular model's manual.

Neither variant should be used as a substitute for certified chemical exposure testing.

18. Temtop P600 - Focused PM2.5 and PM10 Monitoring

The Temtop P600 is a portable particulate monitor focused on PM2.5 and PM10.

Its published measurement ranges are 0–999 µg/m³ for both parameters.

The instrument provides a TFT colour display and a 12-hour PM2.5 histogram.

Typical applications include:

• General haze screening

• Construction site office checks

• Portable particulate inspections

• Warehouse air quality observations

• Air purifier before-and-after comparisons

The P600 is appropriate when the main requirement is particulate monitoring rather than additional chemical or CO2 sensors.

It does not measure CO2, HCHO or TVOC.

A displayed histogram should not be assumed to provide a certified continuous monitoring record or downloadable full-resolution data.

Avoid prolonged exposure to heavy dust loading and operating conditions outside the manufacturer's specifications.

19. Temtop M10i - WiFi Monitoring for Indoor Site Offices

The Temtop M10i is a compact connected indoor air quality monitor.

Its principal functions include:

• PM2.5

• HCHO

• TVOC

• Instrument-generated AQI indication

• WiFi connectivity

• Compatible mobile application functions

• Historical trend viewing

The published PM2.5 measurement range is 0–999 µg/m³.

The M10i is relevant for occupied indoor environments where connected particulate monitoring is useful.

Applications include:

• Temporary construction site offices

• Factory administration rooms

• Commercial offices

• Meeting rooms

• General indoor air quality observations

The M10i does not measure PM10 or CO2.

Its device-generated AQI is not Malaysia's official DOE API.

Connected features depend on compatible network configuration, software availability and the manufacturer's supported functionality.

20. Temtop M10+ - PM2.5, CO2 and TVOC Monitoring

The Temtop M10+ is a compact indoor air quality monitor designed for occupied spaces.

Its principal measurements include:

• PM2.5

• CO2

• TVOC

• Temperature

• Relative humidity

It also provides an electronic-ink display and compatible connected application functions.

Typical applications include:

• Factory offices

• Construction site meeting rooms

• Indoor haze monitoring

• Ventilation-related investigations

• Commercial offices

• Air purifier observations

The combination of PM2.5 and CO2 measurements is useful when both particulate conditions and occupancy-related ventilation trends need to be observed.

The M10+ does not measure PM10 or HCHO.

It is not a certified industrial gas detector or a substitute for professional occupational exposure testing.

21. How to Choose the Right Temtop PM2.5 Monitor

Selecting the right monitor begins with the measurement objective.

For portable PM2.5 and PM10 screening:

Consider the Temtop P600.

For portable PM2.5, PM10 and CO2 measurements:

Consider the Temtop M2000 2nd.

For PM2.5, PM10, HCHO and TVOC screening:

Consider the Temtop LKC-1000S 2nd.

For WiFi-connected PM2.5 monitoring with HCHO and TVOC:

Consider the Temtop M10i.

For occupied rooms requiring PM2.5 and CO2 monitoring:

Consider the Temtop M10+.

Other factors include:

• Required measurement accuracy

• Operating temperature and humidity

• Indoor or sheltered outdoor use

• Portability

• Data export

• App compatibility

• Monitoring duration

• Maintenance requirements

• Whether certified testing is necessary

The correct instrument is the one that matches the required parameters and operating environment.

22. How to Conduct a Practical Air Quality Monitoring Inspection

Step 1 - Define the monitoring purpose.

Decide whether the task involves haze screening, indoor air quality observation, ventilation investigation or formal exposure testing.

Step 2 - Review official API information.

Check DOE APIMS and the current DOSH workplace guidance.

Step 3 - Identify representative locations.

Choose suitable occupied rooms or safe sheltered monitoring points.

Step 4 - Prepare the instrument.

Check power, sensor openings, environmental conditions and the operating manual.

Step 5 - Allow readings to stabilise.

Follow the manufacturer's instructions before interpreting results.

Step 6 - Record measurements.

Note PM2.5, PM10 or other relevant parameters.

Step 7 - Document surrounding conditions.

Record nearby construction activities, occupancy, ventilation, filtration and weather conditions.

Step 8 - Repeat measurements where appropriate.

Compare trends under reasonably consistent conditions.

Step 9 - Review possible control measures.

Consider filtration, housekeeping, ventilation, exposure reduction or professional investigation.

Step 10 - Maintain appropriate records.

Clearly identify general screening observations and avoid presenting them as certified exposure results.

23. Common PM2.5 Monitoring Problems and Troubleshooting

Problem: Two instruments show different PM2.5 readings.

Check sensor differences, airflow, humidity, placement and stabilisation time.

Problem: PM10 is unexpectedly lower than PM2.5.

Review sensor condition, measurement timing and instrument uncertainty.

Problem: PM2.5 rises when a site office door opens.

Investigate outdoor infiltration, nearby activities and air circulation.

Problem: PM2.5 remains high after using an air purifier.

Check filter condition, purifier capacity, continuous pollution sources and door opening.

Problem: CO2 increases when windows are closed.

Review occupancy and ventilation arrangements using a CO2-capable instrument.

Problem: HCHO or TVOC readings fluctuate.

Consider cleaning products, furnishings, nearby chemicals and sensor interference.

Problem: WiFi monitoring becomes unavailable.

Check network compatibility, power, app setup and supported connectivity requirements.

Problem: Readings remain abnormal after storage.

Inspect the instrument, allow stabilisation and follow the manufacturer's maintenance instructions.

Problem: A customer requires a certified compliance report.

Determine the applicable standard and use an appropriately qualified testing provider.

Do not clean optical sensor chambers with compressed air or insert tools unless specifically authorised by the manufacturer.

24. Frequently Asked Questions About Haze and Construction Site Monitoring

Does Malaysia use API or PM2.5 for official haze reporting?

Malaysia publishes official API/IPU information through DOE APIMS. PM2.5 is a pollutant concentration measurement and is not interchangeable with the official index.

Which Temtop models measure both PM2.5 and PM10?

M2000 2nd, LKC-1000S 2nd and P600.

Which Temtop models measure CO2?

M2000 2nd and M10+.

Which Temtop models measure HCHO?

M2000 2nd, LKC-1000S 2nd and M10i.

Which Temtop models measure TVOC?

LKC-1000S 2nd, M10i and M10+.

Which model supports WiFi monitoring?

M10i supports WiFi and compatible app functions. M10+ also provides connected application features.

Can portable monitors determine whether outdoor work must stop?

No. Employers must consult official API information, current DOSH guidance and the workplace risk assessment.

Can Temtop monitors detect respirable crystalline silica?

No. Specialised occupational sampling and laboratory analysis are required.

Can these instruments be used for permanent outdoor monitoring?

They should not be treated as weatherproof permanent monitoring stations.

Can PM2.5 readings prove that an air purifier is effective?

They can indicate local concentration changes but do not constitute certified filtration efficiency testing.

Can a PM2.5 monitor replace occupational exposure assessment?

No. The appropriate testing method depends on the workplace hazard and applicable requirements.

Which monitor is suitable for a construction site office?

M10i is relevant for connected PM2.5, HCHO and TVOC observations; M10+ is relevant when CO2 monitoring is also required.

Which model is suitable for an HSE officer conducting portable inspections?

M2000 2nd provides multi-parameter screening. P600 provides focused PM2.5 and PM10 screening.

Does WiFi connectivity make a monitor regulatory-grade?

No. Connectivity does not establish certified measurement accuracy or regulatory compliance.

25. Air Quality Monitoring for Malaysia's Industrial and Construction Regions

Construction and industrial activities occur throughout Malaysia.

Kuala Lumpur and Selangor: Commercial construction, industrial facilities, warehouses, offices and infrastructure maintenance.

Johor: Construction projects, industrial parks, logistics facilities and manufacturing operations.

Penang: Manufacturing facilities, commercial buildings, engineering offices and industrial maintenance.

Melaka and Negeri Sembilan: Industrial facilities, warehouses, construction projects and building management.

Perak, Pahang, Kedah, Kelantan, Terengganu and Perlis: Construction, engineering maintenance, industrial operations and public infrastructure projects.

Sabah and Sarawak: Infrastructure development, engineering services, industrial facilities and regional construction activities.

The monitoring approach should reflect the actual workplace, environmental conditions and required measurements.

Customers should not assume that the same monitoring procedure is suitable for every industry or project.

26. Recommended Workplace Air Quality Monitoring Records

An internal environmental screening record may include:

• Project or facility name

• Monitoring date and time

• Monitoring location

• Instrument brand and model

• Instrument identification

• Measurement parameters and units

• PM2.5 and PM10 results, where supported

• CO2, HCHO or TVOC readings, where applicable

• Temperature and humidity

• Official API information

• Nearby work activities

• Occupancy and ventilation conditions

• Air purifier or HVAC operating status

• Observations and corrective actions

• Follow-up requirements

Where USB export is supported, available measurement history can supplement the inspection record.

For connected instruments, compatible app-based trends may also assist with internal observations.

These records are not automatically certified environmental monitoring reports or occupational exposure assessments.

Formal testing requires the appropriate methods, quality assurance and qualified personnel.

27. Why Choose MTM Precision for Temtop Air Quality Monitors?

MTM Precision Sdn Bhd supplies air quality monitoring instruments for Malaysian construction contractors, industrial facilities, engineering companies, HSE departments and commercial customers.

Our Temtop product range includes:

• Temtop M2000 2nd

• Temtop LKC-1000S 2nd

• Temtop P600

• Temtop M10i

• Temtop M10+

Customers can contact our team to discuss their monitoring applications and required parameters.

We encourage customers to identify whether they require:

• PM2.5 only

• PM2.5 and PM10

• CO2 monitoring

• HCHO and TVOC screening

• WiFi-connected observations

• Portable inspections

• USB data export

• Formal professional testing

Providing these details helps avoid selecting an instrument that does not support the required measurement.

The goal is to match the instrument to the application, rather than assume that every air quality monitor performs the same functions.

28. Contact MTM Precision Malaysia

For haze monitoring equipment, PM2.5 and PM10 monitors, construction site air quality monitoring and Temtop product selection assistance, contact MTM Precision.

We welcome enquiries from Kuala Lumpur, Selangor, Johor, Penang, Melaka, Negeri Sembilan, Perak, Pahang, Kedah, Kelantan, Terengganu, Perlis, Sabah and Sarawak.

Send us your application details, required measurement parameters and monitoring environment through WhatsApp.

MTM Precision Sdn Bhd

Showroom & Service Centre

No. 29-1 & 29-2, Jalan Bandar 18,

Pusat Bandar Puchong,

47160 Puchong, Selangor, Malaysia.

Tel: 03-8080 7172

WhatsApp: +6016-660 7346

Email: mtmpre@yahoo.com

Website: www.mtmpre.com.my

Contact MTM Precision Malaysia for professional assistance in choosing the right Temtop air quality monitoring instrument for your workplace, construction project or industrial facility.

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Complete guide to haze and construction site air quality monitoring Malaysia. Explore DOSH 2026, API, PM2.5, PM10 and Temtop monitor selection.