How to Create a Cold Chain Temperature Monitoring SOP Malaysia

How to Create a Cold Chain Temperature Monitoring SOP Malaysia

Using a temperature data logger only when a customer complains about damaged goods is a reactive approach.

For businesses regularly handling temperature-sensitive products, a better strategy is to establish a Cold Chain Temperature Monitoring SOP.

An SOP, or Standard Operating Procedure, can define when temperature monitoring is required, which logger should be used, where it should be placed, who activates it, how data is reviewed and what happens when an unusual temperature event is detected.

For suitable one-way shipments, disposable temperature data loggers such as the Azovtes AE-UT and AE-BUT can become part of a repeatable cold-chain monitoring process.

Why Create a Temperature Monitoring SOP?

Without a standard procedure, different employees may handle temperature monitoring differently.

For example:

Employee A: Places one logger near the door.

Employee B: Places one logger in the middle.

Employee C: Forgets to activate the logger.

Employee D: Uses three loggers but does not record their positions.

The company then receives inconsistent data that is difficult to compare.

An SOP creates a more structured approach.

Step 1: Define Which Products Require Monitoring

Not every shipment necessarily requires the same monitoring strategy.

Start by identifying temperature-sensitive product categories.

Examples may include:

Frozen food

Chilled food

Seafood

Meat

Dairy products

Fresh produce

Pharmaceutical products

Laboratory materials

Other temperature-sensitive goods

The required temperature conditions should follow the actual product specifications and applicable procedures.

Step 2: Define Which Shipments Require a Logger

A company may decide to monitor:

Every shipment

Every export container

High-value shipments

New customers

New logistics routes

New transport providers

Selected QA verification shipments

Shipments with previous temperature problems

The correct policy depends on risk, product value and company requirements.

Step 3: Choose Disposable or Reusable

The SOP should define which type of logger is appropriate.

Disposable Temperature Logger

Suitable when:

The shipment is one-way

The logger travels to the customer

Products are exported

Returning the logger is inconvenient

The Azovtes AE-UT and AE-BUT are designed for this type of monitoring workflow.

Reusable Temperature Logger

Suitable when:

The logger remains within the company

The same cold room is monitored repeatedly

The logger returns with the delivery vehicle

Repeated monitoring is required

Choosing the correct category can improve cost efficiency.

Step 4: Define the Logger Model

The SOP can specify which logger is used for different workflows.

For example:

AE-UT → Disposable USB Temperature Logging

AE-BUT → Disposable USB + Bluetooth Temperature Logging

However, the technical specifications must first be suitable for the required application.

For specialised pharmaceutical, medical or laboratory applications, additional requirements may apply.

Step 5: Define the Recording Parameters

The SOP should specify how the logger is configured.

Depending on the application and available logger settings, this may include:

Recording interval

Start delay

Alarm limits

Monitoring duration

Other relevant settings

Avoid allowing every employee to choose different settings without a defined reason.

Consistent settings can make shipment records easier to compare.

Step 6: Define When the Logger Is Activated

This is important.

Should monitoring begin:

Inside the cold room?

Before loading?

During loading?

When the truck departs?

At the port?

At the airport?

The correct answer depends on what part of the journey the company wants to monitor.

If loading is considered an important risk point, activating the logger only after departure may miss useful information.

Step 7: Define How Many Loggers Are Required

The SOP can establish a monitoring strategy based on shipment size and risk.

For example:

Small Shipment

Selected monitoring point according to company procedure.

Palletised Shipment

One or more selected pallet positions.

Large Reefer Shipment

Multiple selected monitoring locations may be considered.

The exact quantity should be based on the monitoring objective rather than applying one arbitrary rule to every shipment.

Step 8: Define Logger Placement

Logger placement should be documented.

Possible locations may include:

Selected carton

Selected pallet

Front of load

Middle of load

Rear of load

For example:

Logger 01 → Front Pallet

Logger 02 → Middle Pallet

Logger 03 → Rear Pallet

This makes the temperature records much easier to interpret later.

Step 9: Record the Logger ID

Every logger should be linked to the correct shipment.

The monitoring record may include:

Shipment Number: EXP-2026-001

Customer: ABC Food Trading

Container Number: XXXXX

Logger 01: Front

Logger 02: Middle

Logger 03: Rear

This becomes particularly important when a company handles many shipments every month.

Step 10: Confirm Logger Activation

The SOP should require staff to confirm that the logger has entered the intended recording state according to the manufacturer's instructions.

A simple checklist can prevent a costly mistake.

For example:

Logger configured — Checked

Logger activated — Checked

Logger ID recorded — Checked

Logger location recorded — Checked

Receiver informed — Checked

Step 11: Tell the Customer a Logger Is Included

For disposable loggers travelling with the shipment, the receiving party should know:

A logger is included

How many loggers are included

Where they are located

How they should be handled

Who should review the data

Otherwise, the logger may accidentally be discarded with packaging.

Step 12: Define the Receiving Procedure

The SOP should also explain what happens when the shipment arrives.

The receiving team may need to:

Locate the logger.

Perform normal receiving inspection.

Retrieve the logger.

Access the recorded data.

Review the temperature history.

Save the record.

Report unusual conditions according to procedure.

The exact process should match the company's QA system.

Step 13: Review More Than Maximum and Minimum

The SOP should discourage staff from looking only at:

MAX

and

MIN

Instead, review:

Temperature trend

Excursion start time

Excursion duration

Recovery

Repeated fluctuations

Logger position

The complete timeline provides more useful information.

Step 14: Define What Happens After an Excursion

The SOP should specify who is responsible for reviewing unusual data.

Depending on the business, this may involve:

QA personnel

Warehouse manager

Logistics manager

Food safety team

Other authorised personnel

The logger itself should not make the accept-or-reject decision.

Product disposition should follow the relevant product requirements and company procedures.

Step 15: Compare Logger Data with Logistics Records

When an unusual event occurs, compare the temperature timeline with:

Loading records

Truck departure

Delivery stops

Port arrival

Flight or vessel schedule

Customs clearance

Warehouse receiving

Refrigeration maintenance

This can help identify which part of the journey requires investigation.

Step 16: Define Data Retention

The SOP should state how temperature records are stored.

Depending on company requirements, records may be associated with:

Shipment number

Customer

Invoice

Container number

Product batch

Date

Logger ID

Consistent filing makes historical data much easier to retrieve.

Step 17: Use the Data for Corrective Action

Temperature monitoring should not simply generate reports that nobody reviews.

If the same issue appears repeatedly, investigate the process.

For example:

Repeated excursion during loading

→ Review loading time.

Repeated increase near rear door

→ Review door-opening and cargo arrangement.

Repeated issue during final delivery

→ Review last-mile procedures.

Repeated issue with one logistics provider

→ Review transport performance.

This turns temperature monitoring into an operational improvement tool.

Step 18: Review the SOP Periodically

Cold-chain operations can change.

A company may introduce:

New products

New customers

New export destinations

New logistics companies

New packaging

New vehicles

The monitoring SOP should be reviewed when significant changes occur.

Example Cold Chain SOP Workflow

A simple workflow might be:

1. Confirm shipment requires monitoring

↓

2. Select AE-UT / AE-BUT or appropriate logger

↓

3. Configure logger

↓

4. Record logger ID

↓

5. Activate logger

↓

6. Place at defined location

↓

7. Record location

↓

8. Ship cargo

↓

9. Customer retrieves logger

↓

10. Review temperature data

↓

11. Save report

↓

12. Investigate excursion if required

This creates a repeatable monitoring process.

Example for Reefer Export

For a selected high-value reefer shipment, a company may establish:

Logger A — Front

Logger B — Middle

Logger C — Rear

Each logger ID and location is recorded before container closure.

At destination, the customer retrieves all three units and reviews the temperature histories.

This provides substantially more information than placing an unidentified logger somewhere inside the load.

Example for Air Freight

For a smaller temperature-sensitive air-freight shipment, the monitoring plan may require only one selected monitoring point.

The logger travels with the shipment from Malaysia to the overseas customer.

Because the device is disposable, no international return arrangement is necessary.

Why Disposable Loggers Can Become a Shipping Consumable

For regular exporters, disposable loggers can be treated similarly to other shipment consumables.

Consider:

5 export shipments per month × 3 loggers

= 15 loggers per month

or:

20 export shipments per month × 2 loggers

= 40 loggers per month

Instead of purchasing one logger only when a problem occurs, businesses can maintain suitable stock according to their shipment volume and monitoring SOP.

AE-UT or AE-BUT for Your SOP?

Consider Azovtes AE-UT when:

Disposable monitoring is required

USB-based data access is sufficient

A straightforward workflow is preferred

Consider Azovtes AE-BUT when:

Disposable monitoring is required

Bluetooth connectivity is useful

Compatible mobile access is preferred

The technical suitability of the logger should always be confirmed before connectivity preference.

Who Should Have a Cold Chain Monitoring SOP?

Potential users include:

Food manufacturers

Frozen-food companies

Seafood exporters

Fresh produce exporters

Pharmaceutical distributors

Cold-storage operators

Importers

Exporters

Refrigerated logistics companies

Freight forwarders

QA/QC departments

Temperature Data Logger Supplier Malaysia

MTM Precision supplies temperature data loggers and monitoring instruments for Malaysian cold-chain businesses.

For suitable one-way shipment applications, the Azovtes AE-UT and AE-BUT Disposable Temperature Data Loggers can be incorporated into a structured shipment-monitoring procedure.

Tell us:

What product are you monitoring?

How many shipments per month?

Local or export?

Air freight or reefer container?

How many monitoring points per shipment?

USB or Bluetooth?

MTM Precision can help you evaluate the type and quantity of temperature loggers required for your operation.

Contact MTM Precision

MTM Precision Sdn Bhd

Showroom & Service Centre:

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