Applications Requiring Verification
A verified scale is legally required whenever measurement results are used in regulated transactions, for example:
✔ Sale of goods by weight
✔ Calculation of charges based on weight
✔ Manufacturing or checking pre-packaged goods
✔ Weighing vehicles
✔ Determining body weight for medical purposes
✔ Manufacturing or dosing medications
Detailed requirements are specified in the Measurement and Verification Act (Mess- und Eichgesetz).
Please make sure to order verification as an accessory when using the scale in legally regulated applications. Post-shipping verification is not possible!
Verifiability of Scales – Definition and Requirements
What does "verifiable" mean and what should be considered?
A scale is verifiable if its construction allows for EU conformity assessment (initial verification) according to Directive 2014/31/EU. It meets all structural and metrological requirements, but is not yet officially verified.
Prerequisite for later official verification is that the manufacturer has first performed an EU initial verification (conformity assessment). Without this step, the verification authority cannot approve the scale for legal-for-trade use.
Important: If the initial verification is not completed before shipping, the device loses its verifiability. Therefore, clarify early whether your application requires verification and order the initial verification right away.
Subsequent Verification by the Verification Office
After the manufacturer’s initial verification, the scale is considered verified for a fixed period. The validity is usually two to three years (depending on scale type) and ends on December 31 of the final year in the interval. After this, the scale must be re-verified by the responsible local verification office — previously known as "reverification."
Operator responsibility: You must apply for re-verification independently and on time: no later than ten weeks before the end of the validity period (see Timely Verification Application). If the application is not submitted in time, the scale may no longer be used in regulated trade.
Lifecycle of a Scale
How a Scale Becomes Legally Usable – Step by Step
From manufacturing to re-verification, a scale follows these steps:

- Scale Manufacturing
All components are produced and assembled in this step, forming a stable foundation for accurate and reliable measurements. - Adjustment
After production, the scale is adjusted using verified test weights to ensure high precision and eliminate deviations. - Conformity Assessment (Initial Verification)
Next comes conformity assessment, also called "initial verification." It confirms that the scale meets all legal requirements and is marked with the CE and verification symbols. - Sales and Market Placement
Once verified, the scale can be placed on the market and put into use. - Registration of the Scale
As of January 1, 2025, the previous user registration obligation has been abolished. However, the requirement for periodic verification remains; users must continue to ensure their scales are re-verified within legally mandated intervals. - Re-Verification
Depending on usage, scales must be re-verified every two, three, or four years. These regular inspections maintain high measurement accuracy and confirm that the scale operates within legal tolerances. All deadlines must be observed, and re-verification must be applied for in time with the responsible authority.
Verified Scales – Features & Markings
How can you identify a verified scale?
Since April 20, 2016, “verified” scales — also referred to as “conformity-assessed” — must carry specific markings. These are defined in Articles 15ff of Directive 2014/31/EU and ensure that the scales meet European standards for accuracy and reliability.
The “verification mark” of a manufacturer’s initial verification (EU conformity assessment) can be found on the scale’s type plate.
Type Plate – Example

- Scale Type: Model designation
- Serial Number: Unique identification number
- Gravitational Zone: Adjustment for different gravitational zones
- Type Approval Number: Approval ID for the scale type
- Accuracy Class / Verification Class: Classification according to legal and metrological requirements
- Rated Temperature Range: Temperature range within which the scale operates reliably
- Security Mark with Verification Counter: In the example, the verification counter is set to 2
W1 – Weighing range 1 with adjusted values
W2 – Weighing range 2 with adjusted values (only for dual-range scales)
Max – Maximum load
Min – Minimum load (20 d)
e= – Verification scale interval (legal division step)
- CE Marking: Indicates that the product complies with current EU directives.
- Metrology Marking: Consists of a rectangle containing the letter "M" and the last two digits of the year the marking was applied. It must be aligned in height and directly adjacent to the CE mark.
- Notified Body: Number of the conformity assessment body that confirms the correctness of the manufacturer’s conformity assessment (EU verification) for non-automatic scales. Products with this marking meet the requirements of Directive 2014/31/EU for placing non-automatic weighing instruments on the market. BOSCHE uses the number 0200.
These markings are usually found on the type plate of the scale but may vary depending on the manufacturer and model.
By paying attention to these features, you can ensure that a scale is legally approved for regulated trade and meets the required precision for commerce, healthcare, and other high-accuracy applications.
Changes Starting January 1, 2025
As of January 1, 2025, the previous notification requirement (user registration) for verified scales will be eliminated. This change is part of the Fourth Bureaucracy Reduction Act.
Information sheet: Removal of Notification Requirement 2025.pdf
What remains unchanged?
- Verification requirement: Regular verification is still mandatory. More info on verification for industrial and commercial use can be found here:
Information sheet: Verification for scales in industry and commerce.pdf
- Verification intervals: Intervals remain unchanged (e.g., 2 years for retail scales).
- Timely application: You must continue to arrange re-verification on time with the responsible verification authority.
Verification Intervals & Validity Periods
Start and end of verification period: The verification period begins on the day of initial verification or market placement. If the interval is at least one year, the period ends on December 31 of the calculated final year.
Scale Type / Application | Verification Interval |
---|---|
Retail / industrial scales (self-indicating, < 3,000 kg) | 2 years |
Retail / precision scales (mechanical, non-self-indicating, < 3,000 kg) | 4 years |
Vehicle & platform scales (≥ 3,000 kg) | 3 years |
Decimal, dial, table scales | 4 years |
Medical bed scales | 2 years |
Person & infant scales (medical use) | 4 years |
Automatic check / sorting scales for pre-packaged goods | 1 year |
Manual checkweighers for pre-packaged goods | 2 years |
Default: For all other scales, the general verification interval is 2 years.
Accuracy Classes & Minimum Loads
Accuracy Classes and Minimum Loads for Scales
Scales that are verifiable or verified are categorized into three accuracy classes under legal metrology regulations. This classification defines their permitted application areas and the associated minimum load — the smallest weight required for legally valid measurements. The minimum load is based on the scale's division value (e).
Class | Typical Scales | Minimum Load |
---|---|---|
I | Analytical / fine scales (e.g., max 220 g, d = 0.1 mg) | 100 × d |
II | Precision scales (e.g., max 3,000 g, d = 0.01 g) | 20–50 × d |
III | Retail, industrial, medical scales (up to several tons) | 20 × d |
d = legal division value. Example Class III: d = 10 g → Minimum load = 200 g.
Tare weights (e.g., trays or containers) do not count toward the minimum load. Compliance is regularly spot-checked by verification authorities — especially in retail, metal/gold buying, and food production industries.
Verification Costs
Verification Costs – What You Should Know
Verification, whether initial (by the manufacturer) or follow-up (by authorities), involves fees that vary depending on the type of verification, accuracy class, and installation site.
Initial vs. Follow-up Verification
- Initial verification (conformity assessment): Prices are set individually by the manufacturer.
- Follow-up verification: Conducted by local authorities with nationally regulated fees under the Measurement and Verification Fee Regulation (MessEGebV).
Fees may change — for example, rates increased in 2015, 2019, and again in 2021. Failed verification ("rejection") is also subject to a reduced fee, usually around 75% of the regular rate.
Possible Fee Reductions
- Verification at the verification office: Pre-registration can qualify for a discount — often up to 50%.
- Workshop verification (e.g., after repair): Typically eligible for a reduced rate — around 35%.
- Multiple scales verified on-site (e.g., in hospitals): Combined appointments may receive up to 45% discount.
Note: These discounts are guidelines and may vary by region and authority. Please check with your local verification office (e.g., via www.eichamt.de) for exact details.
Prices for Initial and Follow-Up Verifications (plus VAT)
Weighing Range | Initial Verification* | Follow-Up Verification** |
Class II scales, Max < 5 kg | €80 | €151 |
Class II scales, 5–50 kg | €93 | €198.20 |
Class III-IV scales, Max < 5 kg | €56 | €78.40 |
Class III-IV scales, 5–50 kg | €93 | €97.30 |
Class III-IV scales, 50–350 kg | €101 | €156 |
Class III-IV scales, 350–1,500 kg | €168 | €291.20 |
Class III-IV scales, 1,500–2,900 kg | €280 | €334.70 |
Class III-IV scales, 2,900–6,000 kg | €336 | €601.40 |
* Initial verification = conformity assessment by BOSCHE as the manufacturer
** Follow-up verification = official check by the responsible authority according to the Measurement and Verification Fee Regulation (MessEGebV)
Operator Obligations
Operators of scales used in commercial or official transactions are subject to certain legal obligations to ensure measurement accuracy and legal conformity.
- Documentation: Keep service and repair records for at least three months after the verification expires.
- User Manual: The operating manual must be available at the installation site to ensure correct use and maintenance.
- Suitable installation location: The scale must not be exposed to interference like vibrations, drafts, or electromagnetic fields, which may distort results.
Also note the verification requirement: All scales must be re-verified at regular intervals. As of January 1, 2025, the previous user registration (§32 MessEG) has been eliminated, but the obligation to verify remains.
By complying with these rules, operators ensure the reliability and legal validity of their measurements.
Timely Verification Application: What Users Should Know
Anyone using a verified scale in legal-for-trade applications is responsible for ensuring it is re-verified on time. Since the Measurement and Verification Act (MessEG) came into force on January 1, 2015, verification authorities no longer schedule follow-up checks automatically. The user must act proactively.
Legally, the application must be submitted at least ten weeks before the current verification expires (§38 MessEG). As most verifications end on December 31, apply no later than mid-October.
If the application is submitted too late, you lose the right to timely verification. The scale may then only be used with special approval — using it without valid verification may result in fines.
Recommendation: Contact your verification authority early to ensure continued, legal use of your scale.
Timely Verification Application: What Users Should Know
Timely calibration application: What users need to know
Anyone using a verified scale in legal-for-trade applications is responsible for ensuring it is re-verified on time. Since the Measurement and Verification Act (MessEG) came into force on January 1, 2015, verification authorities no longer schedule follow-up checks automatically. The user must act proactively.
Legally, the application must be submitted at least ten weeks before the current verification expires (§38 MessEG). As most verifications end on December 31, apply no later than mid-October.
If the application is submitted too late, you lose the right to timely verification. The scale may then only be used with special approval — using it without valid verification may result in fines.
Recommendation: Contact your verification authority early to ensure continued, legal use of your scale.
Verification vs. Calibration
Factory Calibration, Calibration, and Verification Compared
Factory calibration | Calibration (according to DAkkS) | Calibration |
---|---|---|
Factory calibration is not regulated by law. | Calibration according to the DAkkS specifications is not regulated by law. | Calibration is regulated by law. |
Reason for factory calibration “Outlier” for devices, equipment was reactivated after a long time, general check "Does my equipment still work properly?". |
Reason for calibration If the test weight or scale is used within a quality management process , a calibration should be carried out beforehand according to DAkkS specifications. |
Reason for calibration It is required by law as soon as you are involved in so-called ‘trade transfer” participates. This includes, for example, the sale of goods by weight, the calculation of fees by weight as well as the production or control of pre-packaged packages, etc. Further information on this can be found in the calibration law. |
What can be factory calibrated? Test equipment and measuring devices that do not follow a calibration routine according to DAkkS are subject to and are not subject to calibration. |
What can be calibrated? All error-free test equipment can be calibrated according to DAkkS.< /td> |
What can be calibrated? Only “verifiable” items can be calibrated. Scales with type approval and test weights that are calibrated in accordance with the OIML (Organization Internationale de Métrologie Légale) requirements. |
Expiry Is not set. Is carried out, for example, in the same way as the conformity assessment (calibration). The measurement deviations are specified using calibrated weights. After completion, a factory calibration certificate will be issued. |
Process A laboratory accredited by DAkkS tests the test equipment for accuracy through traceability internationally recognized standards. Such a calibration may only be carried out by highly qualified specialist personnel who have presented themselves to the DAkkS certification body. A calibration certificate will then be issued. |
Procedure Balances and weights are checked for calibration error limits (maximum permissible errors). This is done by the manufacturer (only during manufacturer verification) and the calibration office (within the legally prescribed intervals). A stamp certifies that the measuring device met the requirements at the time of the test and that it was “correct” when handled in accordance with the rules of technology within the re-verification period. remains. |
Validity The DIN EN ISO 9001:2015 (7.1.5.2) leaves the user to select the appropriate testing procedures. As a rule, a factory calibration is sufficient provided that traceable test equipment was used. |
Validity International recognition is achieved through multilateral agreements on mutual recognition between EA (European co-operation for Accreditation) and ILAC (International Laboratory Accreditation Cooperation). In Germany, the German Accreditation Body (DAkkS) monitors this. |
Validity A declaration of conformity with CE applies to the European Union -Labeled as “first attempt”. Nationally, only re-verification and national declaration of conformity are recognized. |
How often? A factory calibration can be carried out as often as the operator of the measuring devices requires and testing equipment makes sense. According to 9001:2015, the user sets the cycle after use. |
How often? The operator of the measuring devices and test equipment is responsible for compliance with the respective recommended periodic recalibration periods. |
How often? By law, the re-calibration periods for test equipment and measuring devices are set nationally Specifications set. |
In metrology, it’s important to distinguish between verification, calibration, and factory calibration. These terms refer to different procedures with distinct purposes, processes, and legal implications:
1. Factory Calibration
Factory calibration is an internal process conducted by the manufacturer and is not governed by law. It serves internal quality control purposes, such as for reconditioned devices or routine checks. Deviations are measured using traceable test weights, and the operator decides the calibration frequency. A factory calibration certificate is issued upon completion.
2. Calibration According to DAkkS
This type of calibration is performed by a laboratory accredited by the German Accreditation Body (DAkkS). Although not legally required, it is essential for quality management systems (e.g., ISO 9001). The process involves verifying the accuracy of the device against international standards. The result is documented in a calibration certificate. Recognition is provided via international agreements like ILAC and EA. We offer a DAkkS calibration service in cooperation with graviCal GmbH.
3. Verification
Verification is a legally required procedure for devices used in “legal-for-trade” applications, such as selling goods by weight. It is performed by the manufacturer (initial verification) or a government verification authority (re-verification). Only approved, verifiable devices can be verified. The process confirms compliance with permissible error limits and is documented with an official verification seal.
Industry-Specific Requirements
Regardless of national verification laws, some international regulations require verified scales — for example, the SOLAS Convention for weighing shipping containers. More information about SOLAS requirements can be found here.
Questions About Verification? We’re Happy to Help!
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