There are numerous laboratories providing measurement, testing, analysis, evaluation and inspection services in many different fields. The ability of these laboratories to provide these services in their own fields with healthy, fast, high quality, accurate and reliable results depends on the healthy operation of the test and measurement devices and equipment they use. Consequently, the devices and equipment used in all these services are electrical or electronic devices. In addition to the calibration of these devices, low voltage tests (LVD tests) must also be carried out by the manufacturers as they are covered by the Regulation on Electrical Equipment Designed for Specific Voltage Limits (2014 / 35 / AB) prepared by the Ministry of Science, Industry and Technology. .

There are many brands and features electrical and electronic devices in laboratories. These devices include numerous devices, from liquid and solid weighing devices to ash furnaces, from flame photometers to centrifuges, from turbidimeters to laboratory freezers. Other precision measuring devices are also used. They are all electric or electronic. Unless voltage tests have been performed by the manufacturers of these devices operating with low voltage alternating current, undesirable situations may be encountered during use that may jeopardize the safety of the employees or the safety of the materials in the laboratory.

LVD testing for laboratories and measuring devices is important in two ways:

• These devices must only be designed and manufactured in accordance with applicable safety practices and must not endanger the safety of people, pets or goods if they are properly installed, protected and used for their intended purpose. The basic requirements for security are listed in the annex of the regulation (Annex 1).
• Furthermore, the CE marking must be affixed to these devices in order to ensure free circulation in the European Union countries and to be placed on the domestic market. In order to put CE marking on these products, LVD tests of these devices should be done in accredited test and inspection institutions and the report should be kept in the technical file prepared by the manufacturer.

In addition, in order to ensure that these devices are recognized and used safely in accordance with their intended purpose, the characteristics of the product and the basic characteristics of the stimulant must be specified on the device or in the documentation supplied with the device.