Scales used in commerce must comply with the requirements of the NAWI Directive. In addition, they must have the manufacturer’s declaration of conformity. Approved scales must be equipped with the marking shown in Figure 1 or 2. The accuracy class of the scales must be at least III.
Figure 1. Set of markings indicating the conformity of scales.
Figure 2. Marking indicating the conformity of non-automatic scales (scales commissioned from 1990 to 20 April 2016)
Scales used in consumer sales must show the information that affects the price
When you sell products directly to customers and weigh them while the customer is present, the scales must show or print out all information affecting the price, such as
- tare weight
- unit price
- weighing result
- calculated price.
If the information is shown on the display of the scales, the display must be placed so that it is also visible to the customer.
Use the scales according to the manufacturer’s instructions. The scales must be placed on a stable, vibration-free base and adjusted so that they are level.
The weight of the package must not be included in the quantity contained in the package. When weighing a product, deduct the weight of the package from the total weighing result, or tare the scales before weighing the product. The company must monitor the condition of the scales and the use of tare in a sufficient and appropriate manner. The company must record the monitoring measures carried out.
No unverified measuring instruments or measuring instruments that cannot be verified may be kept at the place of sale.
Measuring Instruments Act 707/2011
Government Decree on Measuring Instruments 471/2014
Government Decree on Non-Automatic Scales 1431/2016
Government Decree on Essential Requirements, Demonstration of Compliance and Specific Technical Requirements of Measuring Instruments 1432/2016
Measuring Instruments Directive 2014/32/EU (MID)
Non-Automatic Weighing Instruments Directive 2014/31/EU (NAWID)
Council Directive 76/211/EEC on the approximation of the laws of the Member States relating to the making-up by weight or by volume of certain prepackaged products
Council Directive 75/107/EEC on the approximation of the laws of the Member States relating to bottles used as measuring containers
Council Directive 80/181/EEC on the approximation of the laws of the Member States relating to units of measurement
Directive 2009/34/EC relating to common provisions for both measuring instruments and methods of metrological control
Elsewhere on the Net
Website of the European Commission on legal metrology and pre-packaged products
The European Commission’s list on the harmonised standards of the MID
NANDO database Database of the European Commission on notified bodies
OIML International Organization of Legal Metrology
WELMEC (The body for the promotion of European cooperation in legal metrology)