Haze Monitoring for HSE Safety Officers Malaysia

Introduction

Haze can create serious occupational health and safety challenges for construction projects, factories and outdoor workplaces in Malaysia. HSE Safety Officers, Safety and Health Officers (SHO), site supervisors and employers need practical methods to assess changing environmental conditions and protect workers.

The Temtop M2000 2nd Air Quality Monitor is a portable instrument that measures PM2.5, PM10, CO2, formaldehyde (HCHO), temperature and relative humidity. Its data export capability can assist with supplementary environmental screening and workplace inspection records.

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

DOSH 2026 Haze Guidelines for Malaysian Workplaces

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 guidelines help employers consider appropriate protective measures based on official Air Pollutant Index (API) readings, workplace hazards and employee health risks.

The October 2026 guidance highlights precautions for high API conditions, including restrictions affecting certain earthmoving activities, visibility assessments for lifting operations and the avoidance of outdoor work under extremely hazardous conditions.

HSE personnel should consult the complete current DOSH guidance when determining the appropriate response. An API reading alone should not be interpreted without considering the relevant activity, risks and prescribed precautions.

Official API values must be obtained from authorised Malaysian environmental monitoring sources. A portable PM2.5 instrument does not generate an official Malaysian API reading.

Why HSE Safety Officers Need Air Quality Monitoring

HSE teams often manage multiple environmental hazards at construction sites.

Common concerns include:

• Regional haze affecting outdoor employees

• PM2.5 from combustion emissions and smoke

• PM10 and airborne dust from earthmoving activities

• Diesel machinery operating near occupied areas

• Poor ventilation inside temporary site offices

• Changes in indoor air quality during haze episodes

Portable monitoring can help identify local changes in particulate concentrations, support inspection records and determine when further assessment is appropriate.

However, an air quality monitor is a supplementary screening tool, not a substitute for occupational exposure sampling, official API information or professional industrial hygiene assessment.

Temtop M2000 2nd Air Quality Monitor

The Temtop M2000 2nd is a multifunction portable air quality monitoring instrument designed for general indoor environmental assessment and supplementary particulate monitoring.

Its principal measurement capabilities include:

• PM2.5 fine particulate matter

• PM10 inhalable particulate matter

• CO2 carbon dioxide using an NDIR sensor

• HCHO formaldehyde

• Temperature

• Relative humidity

Additional features include a colour display, rechargeable battery, audible alarm, historical readings and USB data export in CSV format.

The M2000 2nd is especially useful where HSE teams want to combine particulate screening with indoor CO2 monitoring in temporary offices, control rooms or other occupied spaces.

It should not be represented as a certified personal dust exposure sampler, reference-grade outdoor monitoring station or statutory compliance instrument.

Temtop M2000 2nd Technical Specifications

PM2.5 measurement range: 0–999 µg/m³

PM2.5 resolution: 0.1 µg/m³

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

PM10 measurement range: 0–999 µg/m³

PM10 resolution: 0.1 µg/m³

PM10 stated accuracy: ±15 µg/m³ from 0–100 µg/m³; ±15% above 100 µg/m³

CO2 measurement range: 0–5,000 ppm

CO2 resolution: 1 ppm

CO2 stated accuracy: ±50 ppm plus 5% of reading

HCHO measurement range: 0–2 mg/m³

HCHO resolution: 0.001 mg/m³

Temperature measurement range: 0–50°C

Relative humidity measurement range: 0–90% RH

Battery capacity: 3,000 mAh

Typical stated battery runtime: 6–8 hours

Data export: USB, CSV format

Specifications are based on published M2000 2nd product information and should be checked against the exact supplied instrument revision.

Five Practical Applications for HSE Safety Officers

1. Construction Site Haze Inspections

Use official API information to evaluate haze precautions. The Temtop M2000 2nd can provide supplementary PM2.5 and PM10 readings at selected sheltered inspection locations.

2. Temporary Site Office Air Quality

Monitor indoor particulate concentrations and CO2 levels to support ventilation and air filtration reviews. CO2 can help indicate ventilation conditions in occupied rooms, although it is not a direct measure of every indoor air contaminant.

3. Factory and Industrial Maintenance Areas

Conduct general environmental screening around occupied maintenance spaces, offices and production support areas where the instrument's operating specifications are suitable.

4. Building and Facility Management

Check changes in indoor air quality during haze episodes, particularly where outdoor particles may enter through doors, windows or ventilation systems.

5. Environmental Inspection Documentation

Export supported measurement history for review alongside location details, inspection times, official API readings and observed workplace conditions.

How to Use Temtop M2000 2nd During a Haze Inspection

Step 1: Check the latest official Malaysian API reading and review the applicable DOSH workplace guidance.

Step 2: Identify inspection locations based on employee occupancy, suspected particle sources and site conditions.

Step 3: Verify that the monitoring environment is within the instrument's operating limits. Avoid direct rain, condensation, excessive dust loading and unsafe exposure to construction hazards.

Step 4: Allow the monitor to stabilise according to its operating manual.

Step 5: Record PM2.5, PM10 and any relevant indoor CO2 measurements. Include the date, location, activity and ventilation conditions.

Step 6: Repeat measurements where appropriate to identify trends rather than relying on a single reading.

Step 7: Export available measurement records through USB and review them with the HSE team.

Step 8: Use the findings to inform further investigation and practical controls, while keeping official API-based decisions separate from portable instrument readings.

API vs PM2.5 vs CO2 - What HSE Officers Must Understand

API is the official Air Pollutant Index used to communicate ambient air pollution conditions in Malaysia.

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

PM10 is a particulate concentration representing particles with aerodynamic diameters of 10 micrometres or smaller.

CO2 is carbon dioxide concentration, commonly expressed in parts per million (ppm). Indoor CO2 readings may support ventilation assessment but are not equivalent to haze severity.

These parameters have different meanings and units.

A Temtop M2000 2nd PM2.5 reading must not be treated as an official API value, and CO2 readings must not be used as a substitute for workplace exposure assessments.

Benefits of Data Export for HSE Reporting

The Temtop M2000 2nd supports USB data export in CSV format, allowing recorded information to be reviewed on a computer.

For routine inspections, HSE teams can organise supplementary monitoring records by date, location and activity.

Such records may help with:

• Comparing indoor environmental conditions over time

• Reviewing the effectiveness of housekeeping and filtration measures

• Identifying locations requiring additional investigation

• Supporting internal discussions about workplace environmental conditions

• Documenting general screening observations

Exported readings should be accompanied by appropriate context and should not be described as certified occupational exposure results.

Who Should Consider Temtop M2000 2nd in Malaysia?

The Temtop M2000 2nd may be useful for construction HSE teams, building contractors, civil engineering consultants, facility managers, factory maintenance departments, site office administrators and indoor environmental inspection teams.

For high-dust construction environments, personal exposure monitoring or regulatory testing, specialised instruments and approved sampling methods may be necessary.

MTM Precision can assist customers in selecting instruments based on required measurement parameters, operating conditions and intended applications.

Where to Buy Temtop M2000 2nd in Malaysia

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

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

For product selection assistance, customers may send their application details and required measurement parameters to MTM Precision 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 for Temtop M2000 2nd product information and air quality monitoring solutions in Malaysia.

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