Factory Indoor Air Quality During Haze Malaysia

Factory Indoor Air Quality During Haze Malaysia

Introduction

Factory indoor air quality during haze is an important concern for manufacturers, HSE Safety Officers, facility managers and industrial employers across Malaysia.

During regional haze events, fine airborne particles can enter factory offices, meeting rooms, control rooms and other occupied indoor spaces through doors, windows and ventilation systems.

Factory operators may respond by closing windows or adjusting ventilation. While these actions can reduce the entry of outdoor particles in some circumstances, occupied rooms also need appropriate ventilation.

The Temtop M10+ Indoor Air Quality Monitor helps users observe PM2.5, CO2, TVOC, temperature and relative humidity in suitable indoor environments.

These measurements provide complementary information about particulate pollution, ventilation-related conditions and general indoor environmental trends.

MTM Precision Sdn Bhd supplies Temtop M10+ air quality monitoring equipment for factories, commercial offices, industrial facilities and building management applications throughout Malaysia.

Why Indoor Air Quality Matters During Haze

Regional haze is commonly associated with increased concentrations of fine airborne particles.

Outdoor particles can enter industrial buildings through:

• Open factory doors and loading bays

• Windows and ventilation openings

• Mechanical ventilation systems

• Gaps around doors and building envelopes

• Frequent movement between outdoor and indoor areas

Indoor particulate conditions depend on the outdoor environment, ventilation, filtration, local emission sources and building operations.

Factory offices may have lower or higher PM2.5 concentrations than nearby outdoor locations.

Consequently, official outdoor air quality information does not necessarily describe conditions inside a particular occupied room.

A suitable indoor PM2.5 monitor can help building managers observe local conditions and evaluate changes over time.

Understanding PM2.5 Pollution Inside Factories

PM2.5 refers to airborne particles with aerodynamic diameters of 2.5 micrometres or smaller.

These particles may originate from regional haze, combustion processes, vehicle exhaust and certain industrial activities.

PM2.5 concentration is normally expressed in micrograms per cubic metre (µg/m³).

The Temtop M10+ measures local PM2.5 concentrations using an optical particle sensing system.

This makes it useful for observing general indoor particulate trends during haze episodes.

However, the instrument does not identify the chemical composition of airborne particles.

It cannot determine exposure to specific substances such as respirable crystalline silica, metal fumes or other hazardous workplace contaminants.

Those applications may require specialised occupational hygiene assessment.

Why CO2 Monitoring Is Also Important During Haze

During haze events, some offices reduce outdoor air intake in an attempt to limit particle infiltration.

However, reducing ventilation without considering room occupancy may cause indoor carbon dioxide concentrations to increase.

CO2 is produced by human respiration and can provide useful information about ventilation-related trends in occupied spaces.

The Temtop M10+ includes a CO2 measurement function, allowing users to observe CO2 alongside PM2.5.

For example, a factory meeting room may show decreasing PM2.5 after windows are closed, while CO2 increases as employees remain inside.

These measurements illustrate why particulate control and adequate ventilation should be considered together.

CO2 is not a direct measure of PM2.5, infectious aerosols or all indoor pollutants.

Building managers should assess ventilation and filtration together rather than assuming that a low PM2.5 reading means every indoor air quality concern has been resolved.

Temtop M10+ Indoor Air Quality Monitor Malaysia

The Temtop M10+ is a compact indoor air quality monitor designed to observe several environmental parameters in occupied rooms.

Its principal measurement functions include:

• PM2.5 fine particulate matter

• CO2 carbon dioxide

• TVOC total volatile organic compounds

• Temperature

• Relative humidity

The instrument also offers an electronic-ink display and compatible mobile application connectivity for viewing measurements and trends.

Its compact design makes it suitable for placement in factory administration offices, meeting rooms, control rooms and other appropriate indoor locations.

The M10+ does not measure PM10 or HCHO formaldehyde.

It is designed for general indoor environmental monitoring and should not be marketed as a certified industrial gas detector, personal exposure sampler or outdoor regulatory monitoring station.

Temtop M10+ Technical Specifications

Model: Temtop M10+

PM2.5 measurement range: 0–999.9 µg/m³

PM2.5 resolution: 0.1 µg/m³

PM2.5 published accuracy: ±10 µg/m³ from 0–100 µg/m³; ±10% from 100–500 µg/m³

CO2 measurement range: 400–5,000 ppm

CO2 resolution: 1 ppm

CO2 published accuracy: ±(40 ppm + 5%) from 400–2,500 ppm

TVOC measurement range: 0–5 mg/m³

TVOC resolution: 0.01 mg/m³

Temperature measurement range: -10–60°C

Temperature resolution: 0.1°C

Temperature published accuracy: ±0.5°C

Relative humidity measurement range: 0–99% RH

Humidity resolution: 0.1% RH

Humidity published accuracy: ±3% RH

Operating environment: 0–50°C and 0–90% RH

Battery capacity: 2,200 mAh

Power input: DC 5V, 1A

Dimensions: 82 × 82 × 31 mm

Display: Electronic-ink display

Connectivity: Compatible Temtop mobile application

The manufacturer advertises battery operation of up to 60 days under its specified usage conditions. Actual battery life depends on measurement and connectivity settings.

The full measurement range must not be assumed to carry the same accuracy specification.

Users should confirm the supplied instrument revision and current manufacturer documentation before relying on specific performance characteristics.

Six Factory Applications for Temtop M10+

1. Factory Administration Offices

Factory offices may experience indoor particulate infiltration during regional haze episodes.

The M10+ can provide PM2.5 readings and help office managers observe changes associated with ventilation and filtration.

2. Meeting Rooms

Meeting rooms may become densely occupied for extended periods.

The M10+ combines CO2 and PM2.5 measurements, supporting general observation of ventilation-related trends and fine particulate concentrations.

3. Production Control Rooms

Suitable enclosed control rooms may benefit from monitoring PM2.5, CO2, temperature and humidity.

The instrument should not be used in hazardous industrial atmospheres or outside its environmental operating limits.

4. Factory Training Rooms

Training rooms can have changing occupancy throughout the day.

Monitoring CO2 and PM2.5 may help facility teams identify conditions that warrant further ventilation or filtration review.

5. Warehouse Administration Areas

Offices located near loading bays may experience particle infiltration when doors open frequently.

The M10+ can help compare general indoor conditions during different operational periods.

6. Industrial Facility Management

Facility managers can use the M10+ to observe general indoor air quality trends in occupied spaces and investigate changes during haze events.

Malaysia DOSH 2026 Haze Guidelines for Factory Employers

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

The guidance addresses employer responsibilities, workplace risk assessment and protective measures during haze conditions.

Employers should review official Air Pollutant Index (API) information from Malaysia's Department of Environment and assess the risks associated with their specific activities.

Appropriate precautions may involve adjustments to outdoor work, protection of vulnerable employees, review of ventilation arrangements and other measures described in the official guidance.

For factories operating both indoor and outdoor activities, the relevant precautions may differ according to the work location, physical demands, visibility and other hazards.

Employers should consult the complete DOSH 2026 guidance and applicable legal requirements for specific operational decisions.

The Temtop M10+ is not an official API monitoring station.

Its local PM2.5 readings cannot independently determine API-based work restrictions or establish regulatory compliance.

Official Malaysia API vs Indoor PM2.5 Readings

The Air Pollutant Index (API), also known as IPU in Malaysia, is an official ambient air pollution index.

It is published through the Department of Environment's Air Pollutant Index Management System (APIMS).

PM2.5 is a fine particulate concentration measured in µg/m³.

The Temtop M10+ provides PM2.5 readings at its indoor monitoring location.

These are different forms of information.

For example, an indoor PM2.5 reading of 80 µg/m³ does not mean that the official Malaysia API is 80.

Likewise, an official API reading for a monitoring area does not necessarily represent the concentration inside a factory office.

Factories should use official API information for haze-related public and workplace guidance, while indoor instruments provide supplementary information about local environmental conditions.

How to Monitor Factory Indoor Air Quality During Haze

Step 1: Check official outdoor haze conditions.

Review current DOE APIMS readings and relevant DOSH guidance.

Step 2: Identify occupied indoor locations.

Choose suitable areas such as factory offices, meeting rooms, training rooms and control rooms.

Step 3: Position the Temtop M10+ correctly.

Place the monitor away from direct air-conditioning outlets, open windows and concentrated local emissions unless those are the intended measurement locations.

Step 4: Allow the instrument to stabilise.

Follow the manufacturer's instructions before interpreting readings.

Step 5: Observe PM2.5 concentrations.

Record readings during different outdoor haze conditions and room operating arrangements.

Step 6: Review CO2 separately.

Observe how occupancy and ventilation arrangements affect CO2 levels.

Step 7: Review TVOC, temperature and humidity.

Use these measurements for general environmental screening rather than identifying specific chemicals or certifying workplace compliance.

Step 8: Compare trends over time.

Use comparable locations and measurement periods to identify changes.

Step 9: Review ventilation and filtration arrangements.

Consider whether further investigation, improved filtration or ventilation adjustments are necessary.

Step 10: Seek professional assessment where required.

Specialised industrial contaminants, hazardous atmospheres and regulated occupational exposures require suitable professional methods.

How Air Purifiers Can Help During Haze

Air purifiers equipped with suitable particle filtration may help reduce indoor particulate concentrations when correctly selected and operated.

During haze events, facility managers may compare PM2.5 readings before and after using an air purifier.

The Temtop M10+ can help observe changes in local PM2.5 concentrations.

However, several factors influence the results:

• Room size and layout

• Air purifier capacity

• Filter condition

• Air circulation

• Outdoor particle infiltration

• Indoor pollution sources

• Measurement location

A lower PM2.5 reading at one location does not establish certified filtration efficiency or guarantee uniform air quality throughout the room.

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

For this reason, CO2 monitoring may provide additional information when occupied rooms are kept closed for extended periods.

Understanding TVOC Monitoring in Factory Offices

TVOC refers to total volatile organic compounds, a broad indication of certain airborne organic vapours.

Indoor sources may include furnishings, adhesives, cleaning products, coatings and other materials.

The Temtop M10+ includes a TVOC measurement function for general indoor air quality screening.

However, TVOC readings from a compact consumer or general-purpose monitor should not be used to identify individual chemicals or determine compliance with specific occupational exposure limits.

The instrument is not a substitute for dedicated industrial gas detection, chemical-specific monitoring or professional occupational hygiene assessment.

Where chemical vapours are a concern, employers should evaluate the substances involved and select appropriate monitoring methods.

Temtop M10+ vs PM2.5-Only Monitoring

A PM2.5-only monitor focuses on fine particulate concentrations.

The Temtop M10+ provides a broader picture of selected indoor environmental conditions because it also measures CO2, TVOC, temperature and relative humidity.

This is particularly useful when factories are trying to balance particulate reduction with appropriate ventilation during haze.

For example, PM2.5 may decrease when windows are closed, while CO2 increases during prolonged occupancy.

The M10+ allows users to observe both parameters.

However, it does not measure PM10.

Customers requiring both PM2.5 and PM10 should select a suitable particulate monitor designed for those measurements.

Instrument selection should always reflect the required pollutants, intended environment and whether formal testing is necessary.

Frequently Asked Questions About Factory Indoor Air Quality

Does Temtop M10+ measure PM2.5?

Yes. Its published PM2.5 measurement range is 0–999.9 µg/m³.

Does the M10+ measure CO2?

Yes. The published CO2 measurement range is 400–5,000 ppm.

Can the M10+ measure PM10?

No. PM10 is not a supported measurement parameter.

Does the M10+ measure formaldehyde?

No. HCHO formaldehyde measurement is not listed as a supported M10+ function.

Can the M10+ monitor TVOC?

Yes. It provides TVOC readings for general indoor air quality screening.

Is the M10+ suitable for factory offices?

Yes, for suitable indoor environments within the manufacturer's operating limits.

Can the M10+ be used to measure hazardous industrial gases?

No. It is not a certified industrial gas detector or chemical-specific occupational exposure monitor.

Does the M10+ measure Malaysia's official API?

No. Official API readings are published by the Department of Environment.

Can the M10+ determine whether factory work must stop during haze?

No. Employers must use official information, applicable DOSH guidance and workplace risk assessment.

Can the M10+ replace professional indoor air quality testing?

No. It is intended for general monitoring and screening rather than accredited or regulatory testing.

Where to Buy Temtop M10+ in Malaysia

MTM Precision Sdn Bhd supplies Temtop M10+ Indoor Air Quality Monitors for factory offices, manufacturing facilities, HSE departments, commercial buildings and facility management applications.

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

If your factory needs indoor PM2.5, CO2 or TVOC monitoring during haze, contact our team with your application details.

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

Send your application requirements to MTM Precision through WhatsApp for Temtop M10+ product information and indoor air quality monitoring assistance in Malaysia.

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