Thông tư 04/2026/TT-BKHCN sửa đổi văn bản quy phạm pháp luật của Bộ trưởng Bộ Khoa học và Công nghệ ban hành trong lĩnh vực tiêu chuẩn đo lường chất lượng

CIRCULAR

ON AMENDMENTS TO SOME ARTICLES OF LEGISLATIVE DOCUMENTS OF THE MINISTER OF SCIENCE AND TECHNOLOGY REGARDING STANDARDS, METROLOGY AND QUALITY

Pursuant to the Law on Promulgation of Legislative Documents No. 64/2025/QH15 amended by the Law No. 87/2025/QH15;

Pursuant to the Law on Standards and Technical Regulations No. 68/2006/QH11 amended by the Law on Standards and Technical Regulations No. 70/2025/QH15;

Pursuant to the Law on Product and Goods Quality No. 05/2007/QH12 amended by the Law on Product and Goods Quality No. 78/2025/QH15;

Pursuant to the Law on Measurement No. 04/2011/QH13;

Pursuant to Decree No. 22/2026/ND-CP of the Government elaborating some articles and measures for enforcement of the Law on Standards and Technical Regulations;

Pursuant to Decree No. 132/2008/ND-CP of the Government elaborating some articles of the Law on Product and Goods Quality amended by Decree No. 74/2018/ND-CP;<0}

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Pursuant to the Decree No. 24/2012/ND-CP of the Government on management of gold business amended by Decree No. 232/2025/ND-CP;

Pursuant to Decree No. 105/2016/ND-CP of the Government on requirements for operation of organizations in charge of inspecting/calibrating/testing measuring instruments, measurement standards;

Pursuant to Decree No. 154/2018/ND-CP of the Government on amendments to certain regulations on investment and business conditions in sectors under the management of the Ministry of Science and Technology and certain regulations on specialized inspections;

Pursuant to Decree No. 36/2026/ND-CP of the Government on amendments to some articles of Decree No. 105/2016/ND-CP dated July 01, 2016 of the Government on requirements for operation of organizations in charge of inspecting/calibrating/testing measuring instruments, measurement standards amended by Decree No. 154/2018/ND-CP dated November 09, 2018 of the Government and Decree No. 133/2025/ND-CP dated June 12, 2025 of the Government on decentralization and devolvement in state management of the Ministry of Science and Technology;

Pursuant to Decree No. 37/2026/ND-CP of the Government elaborating some articles and measures for enforcement of Law on Product and Goods Quality;

Pursuant to Decree No. 78/2025/ND-CP of the Government elaborating some articles and measures for enforcement of Law on Promulgation of Legislative Documents amended by Decree No. 187/2025/ND-CP;

Pursuant to Decree No. 79/2025/ND-CP of the Government on examination, review, systematization and handling of legislative documents amended by Decree No. 187/2025/ND-CP;

Pursuant to Decree No. 55/2025/ND-CP of the Government on functions, responsibilities, jurisdiction and organizational structure of the Ministry of Science and Technology;

At the request of the President of the Commission for the Standards, Metrology and Quality of Vietnam;

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Article 1. Amendments to some articles of Circular No. 22/2013/TT-BKHCN dated September 26, 2013 of the Minister of Science and Technology on management of measurement in gold trading and quality management of gold jewelry on the market

1. Amendments to clause 1, Article 4:

“1. The scale used for determining gold mass and gold content in transactions between organizations and individuals shall satisfy the following requirements:

a) The scale must have a measurement range and accuracy suitable for the gold mass to be measured. The capacity of the scale shall comply with the verification scale interval (e) prescribed in Table 1.

Table 1

Capacity

Verification scale interval (e) of the scale

Up to 200 g

≤ 1 mg

...

...

...

≤ 10 mg

> 3 g to 10 kg

≤ 100 mg

> 10 kg

≤ 1 g

b) The scale must have been recognized and appointed in accordance with laws on metrology. The inspection certificate (inspection mark, inspection seal, or inspection certificate) must be unexpired.

2. Amendments to clause 3, Article 4:

“3. The mass of gold traded or tested must not be smaller than the declared mass. The measurement error limit for the gold mass shall comply with requirements prescribed in Table 2.

Table 2

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...

...

Mass (m)

Error Limit (S)

In grams (g)

In milligrams (g)

1

30

13

2

...

...

...

17

3

100

30

4

200

56

5

300

...

...

...

6

500

130

In kilograms (kg)

7

1

240

8

...

...

...

350

9

2

430

10

3

600

11

5

...

...

...

12

6

1100

Based on measurement result

13

Greater than 6

0,0175 %

The error limit of gold mass (m) not prescribed in Table 2 is determined as follows:

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S=

13

* m

30

Example 1:

A golden ring weighs 7.5 g using a scale with e = 1 mg. The error limit (S) is:

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S = (S

+

S_i+1 – S_i

* (m – mi))

 m_i+1 – m_i

Where:

S: The maximum error;

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m_i, m_i+1: two consecutive values of gold mass with indices i and i+1 in Table 2, provided m_i < m < m_i+1;

S_i, S_i+1: error limits in Table 2 corresponding to m_i, m_i+1;

Example 2:

A golden bracelet weighs 86 g (m = 86 g) using a scale with e = 1 mg. According to Table 2, 50 g < 86 g < 100 g.

Thus:

m₂ = 50 g, m₃ = 100 g; S₂ = 17 mg, S₃ = 30 mg;

The error limit (S) is:

c) For m > 6kg, the error limit (S) is calculated by multiplying the measurement result by 0,0175% and rounded to the nearest verification scale interval (e) of the scale.

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A gold bar weighs 10 kg using a scale with e = 100 mg.. The error limit (S) is:

S = (10 x 0,0175 %) kg ~ 1,8 g

Article 2. Amendments to point b, section 3.4.2 of the National Technical Regulation QCVN 19:2019/BKHCN on LED lighting products attached to Circular No. 08/2019/TT-BKHCN dated September 25, 2019 of the Minister of Science and Technology

“b. Testing for certification purposes shall be conducted by a testing organization designated in accordance with Decree No. 132/2008/ND-CP dated December 31, 2008 of the Government elaborating some articles of the Law on Product and Goods Quality amended by Decree No. 74/2018/ND-CP dated May 15, 2018 of the Government on amendments to some articles of Decree No. 132/2008/ND-CP, Decree No. 154/2018/ND-CP; or be recognized in accordance with Circular No. 27/2007/TT-BKHCN. The scope of testing of the testing organization shall comply with requirements of this Technical Regulation.”.

Article 2. Amendments to section 4.4.3 of the National Technical Regulation QCVN 03:2019/BKHCN on safety of toys attached to Circular No. 09/2019/TT-BKHCN dated September 30, 2019 of the Minister of Science and Technology

“4.4.3. Testing for certification purposes shall be conducted by a testing organization designated in accordance with Decree No. 132/2008/ND-CP dated December 31, 2008 of the Government elaborating some articles of the Law on Product and Goods Quality amended by Decree No. 74/2018/ND-CP dated May 15, 2018 of the Government on amendments to some articles of Decree No. 132/2008/ND-CP, Decree No. 154/2018/ND-CP; or be recognized in accordance with Circular No. 27/2007/TT-BKHCN. The scope of testing of the testing organization shall comply with requirements of this Technical Regulation.”.

Article 4. Amendments to clause 1, Article 4 of Circular No. 23/2013/TT-BKHCN dated September 26, 2013 of the Minister of Science and Technology on Group 2 measuring instruments amended by clause 2, Article 1 of Circular No. 07/2019/TT-BKHCN dated July 26, 2019 of the Minister of Science and Technology on amendments to some articles of Circular No. 23/2013/TT-BKHCN; and amended by Article 1 of Circular No. 03/2024/TT-BKHCN dated April 15, 2024 of the Minister of Science and Technology

“Article 4. List of measuring instruments, control measures for metrology, and measuring instrument inspection intervals

The List of measuring instruments, control measures for metrology, and measuring instrument inspection intervals includes:

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 No.

Measuring instrument

Control measures for metrology

Inspection interval

Type approval

Inspection

Once

Periodically

After repair

...

...

...

(2)

(3)

(4)

(5)

(6)

(7)

1

Measuring instrument for length:

...

...

...

- Measuring tape

-

x

-

-

-

...

...

...

-

x

x

x

12 months

- Water depth measuring instrument

-

x

x

...

...

...

12 months

- Measuring instrument for depths of underwater structure

-

x

x

x

24 months

2

Taximeter

...

...

...

x

x

x

18 months

3

Speed gun

x

x

x

...

...

...

24 months

4

Level measuring instrument

-

x

x

x

12 months

5

...

...

...

-

x

x

x

12 months

6

Analytical balance

-

x

...

...

...

x

12 months

7

Precision balance

-

x

x

x

12 months

...

...

...

Universal scales:

- Dial spring scale

x

x

...

...

...

x

24 months

- Table top scale; beam scale; steel hanging scale

x

x

x

x

12 months

9

...

...

...

x

x

x

x

12 months

10

Weighbridges

x

x

...

...

...

x

12 months

11

Specialized weighbridges for vehicle load inspection

x

x

x

x

24 months

...

...

...

Static rail weighbridges

x

x

x

x

12 months

13

In-motion rail weighbridges

x

...

...

...

x

x

24 months

14

Conveyor scale

x

x

x

x

...

...

...

15

Vehicle load inspection scales

x

x

x

x

12 months

16

Weights:

...

...

...

- E2 accuracy weights

-

x

x

x

...

...

...

- F1 or less accuracy weights

-

x

x

x

12 months

17

Tensile and yield strength testing instrument

-

...

...

...

x

x

12 months

18

Momentum flux measuring instrument

-

x

x

x

...

...

...

19

Fuel dispensers

x

x

x

x

12 months

20

LPG dispensers

...

...

...

x

x

x

12 months

21

Water level gauges:

...

...

...

- Mechanical cold water gauges

x

x

x

x

60 months

- Electronic cold water gauges

x

...

...

...

x

x

36 months

22

Gasoline gauges

x

x

x

x

...

...

...

23

Gas gauges:

- LPG gauges

x

...

...

...

x

x

12 months

- Industrial gas gauges

x

x

x

x

36 months

...

...

...

x

x

x

x

+ Q_max < 16 m³/h

x

x

x

...

...

...

60 months

+ Q_max < 16 m³/h

x

x

x

x

36 months

24

Common volumetric measuring instrument

...

...

...

x

x

x

24 months

25

Pipettes

-

x

x

...

...

...

24 months

26

Fixed tanks

-

x

x

x

60 months

27

...

...

...

- Car tank

-

x

x

...

...

...

12 months

- Railway tank

-

x

x

x

60 months

28

Automatic fuel measuring instrument

...

...

...

x

x

x

12 months

29

Water flow measuring instrument

-

x

x

...

...

...

24 months

30

Wind speed measuring instrument

-

x

x

x

24 months

31

...

...

...

-

x

x

x

12 months

32

Sphygmomanometers: mercury sphygmomanometers; spring sphygmomanometers; electronic sphygmomanometers

-

x

...

...

...

x

12 months

33

Thermometers: liquid-in-glass thermometers; alcohol thermometers; mercury-in-glass thermometers with maximum device

-

x

x

-

24 months

...

...

...

Medical thermometers:

- Macroscale mercury-in-glass medical thermometer

-

x

...

...

...

-

-

- Electrical thermometers with maximum device

-

x

x

-

06 months

- Electrical infrared thermometers

...

...

...

x

x

x

12 months

35

Grain moisture meter

-

x

x

...

...

...

12 months

36

Air hygrometers and thermometers

-

x

x

x

24 months

37

...

...

...

-

x

x

x

24 months

38

Dust content measuring instrument:

...

...

...

- Measuring instrument for dust content in emission

-

x

x

x

12 months

- Measuring instrument for dust content in the air

...

...

...

x

x

x

12 months

39

Measuring instrument for alcohol in breath

x

x

x

...

...

...

12 months

40

Measuring instrument for content of gases:

- Measuring instrument for content of gases in emission

...

...

...

x

x

x

12 months

- Measuring instrument for content of gases in the air

-

x

x

x

...

...

...

41

Measuring instrument for water statistics:

- Measuring instrument for water statistics in surface water

-

...

...

...

x

x

12 months

- Measuring instrument for water statistics in wastewater

-

x

x

x

12 months

...

...

...

Measuring instrument for salt moisture

-

x

x

x

12 months

43

Electric meters:

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...

...

- One-phase AC induction meters

x

x

x

x

60 months

...

...

...

x

x

x

x

72 months

- Three-phase AC induction meters

x

x

x

...

...

...

48 months

- Three-phase AC electronic meters

x

x

x

x

36 months

44

Current transformers

...

...

...

x

x

x

60 months

45

Voltage transformers

x

x

x

...

...

...

60 months

46

Insulation resistance testers

-

x

x

x

12 months

47

...

...

...

-

x

x

x

12 months

48

Explosive and detonator resistance testers

-

x

...

...

...

x

6 months

49

Measuring instrument for electric field intensity

-

x

x

x

12 months

...

...

...

Electrocardiogram devices

-

x

x

x

24 months

51

Electroencephalograph devices

-

...

...

...

x

x

24 months

52

Sound level meters

-

x

x

x

...

...

...

53

Vibration meters

-

x

x

x

12 months

54

Illuminance meters

...

...

...

x

x

x

12 months

55

Luminance meters

-

x

x

...

...

...

12 months

56

UV meters

-

x

x

x

12 months

57

...

...

...

- Atomic absorption spectrometers

-

x

x

...

...

...

12 months

- Ultraviolet - visible spectroscopy

-

x

x

x

12 months

58

Laser power meter

...

...

...

x

x

x

12 months

59

Focimeters

-

x

x

...

...

...

12 months

60

Eye refractometers

-

x

x

x

12 months

61

...

...

...

-

x

x

x

12 months

62

Polarimeters for determination of sugar content (Pol)

-

x

...

...

...

x

12 months

63

Refractometers for determination of sugar contents (Brix)

-

x

x

x

12 months

...

...

...

Rain gauges

-

x

x

x

24 months

65

Water level meters

-

...

...

...

x

x

24 months

66

Automatic instrument for continuous metrology measurement

-

x

x

x

...

...

...

67

Measuring instrument for latitude and longitude

-

x

x

x

12 months

68

Satellite navigation instrument

...

...

...

x

x

x

12 months

69

Electric vehicle charging power meter:

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...

- AC charging power meter for electric bicycles and electric bikes

x

x

x

x

60 months

- AC charging power meter for electric cars

x

...

...

...

x

x

36 months

- DC charging power meter for electric cars

x

x

x

x

36 months

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-  “-” indicates optional measures;

- Measurement specifications of the measuring instrument shall be maintained throughout the duration of the inspection interval.

Article 5. Amendments to points 5.3, Article 5 of the National Technical Regulation 25:2025/BKHCN on electrical equipment for household electrical installations and similar electrical systems attached to Circular No. 01/2025/TT-BKHCN dated February 14, 2025 of the Minister of Science and Technology

Article 6. Implementation clause

1. This Circular comes into force from April 15, 2026.

2. Article 2 of this Circular ceases to be effective from June 01, 2026.

3. In cases where legislative documents cited in this Circular are amended, supplemented or replaced by other legislative documents, the newer documents shall prevail.

4. Chief of Office; President of the Commission for the Standards, Metrology and Quality of Vietnam; heads of authorities and units affiliated to the Ministry of Science and Technology; relevant organizations and individuals are responsible for implementing this Circular./.

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MINISTER




Nguyen Manh Hung