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prEN ISO 10704 Viešoji apklausa

Komentavimo iki data 2025-11-04

Vandens kokybė. Visuminis alfa ir visuminis beta aktyvumas. Tyrimo metodas naudojant ploną šaltinio sluoksnį (ISO/DIS 10704:2025)

This document specifies a method for the determination of gross alpha and gross beta activity concentration for alpha- and beta-emitting radionuclides. Gross alpha and gross beta activity measurement is not intended to give an absolute determination of the activity concentration of all alpha and beta emitting radionuclides in a test sample, but is a screening analysis to ensure particular reference levels of specific alpha and beta emitters have not been exceeded. This type of determination is also known as gross alpha and gross beta index. Gross alpha and gross beta analysis is not expected to be as accurate nor as precise as specific radionuclide analysis after radiochemical separations. Maximum beta energies of approximately 0,1 MeV or higher are well measured. It is possible that low energy beta emitters can not detected (e.g. 3H, 55Fe, 241Pu) or can only be partially detected (e.g. 14C, 35S, 63Ni, 210Pb, 228Ra). The method covers non-volatile radionuclides, since some gaseous or volatile radionuclides (e.g. radon and radioiodine) can be lost during the source preparation. The method is applicable to test samples of drinking water, rainwater, surface and ground water as well as cooling water, industrial water, domestic and industrial wastewater after proper sampling, sample handling, and test sample preparation (filtration when necessary and taking into account the amount of dissolved material in the water). The method described in this document is applicable in the event of an emergency situation, because the results can be obtained in less than 1 h. Detection limits reached for gross alpha and gross beta are less than 10 Bq/l and 20 Bq/l respectively. The evaporation of 10 ml sample is carried out in 20 min followed by 10 min counting with window-proportional counters. It is the laboratory's responsibility to ensure the suitability of this test method for the water samples tested.

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prEN 1129 Archyvuotas

Komentavimo iki data 2025-10-30

Baldai. Atlenkiamosios lovos. Saugos reikalavimai ir bandymų metodai

This European Standard specifies safety requirements and test methods for foldaway beds for domestic and non-domestic use. The requirements only apply to the foldaway function of the bed. The safety, strength and durability of the bed itself, including high beds and bunk beds, as well as other functions e.g. seating, tables or storage, are covered by other European Standards. Safety that is dependent upon the structure of the building is not included. It does not include requirements for electrical safety. It does not include requirements for the resistance to ageing, degradation and flammability. The requirements apply without regard to materials, design, construction or manufacturing process. This standard does not apply to folding beds, camping beds and convertible bed/chairs or settees which are covered by other European safety standards.

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prEN ISO 9001 Viešoji apklausa

Komentavimo iki data 2025-11-04

Kokybės vadybos sistemos. Reikalavimai (ISO/DIS 9001:2025)

This document specifies requirements for a quality management system when an organization: a) needs to demonstrate its ability to consistently provide products and services that meet customer and applicable statutory and regulatory requirements, and b) aims to enhance customer satisfaction through the effective application of the system, including processes for improvement of the system and the assurance of conformity to customer and applicable statutory and regulatory requirements. All the requirements of this document are generic and are intended to be applicable to any organization, regardless of its type or size, or the products and services it provides.

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prEN ISO 14096-2 Archyvuotas

Komentavimo iki data 2025-10-30

Neardomieji bandymai. Radiografinių plėvelių skaitmeninio apdorojimo sistemų įvertinimas. 2 dalis. Mažiausieji reikalavimai (ISO/DIS 14096-2:2025)

This document specifies three film-digitisation quality classes for the requirements of non-destructive testing. The selected class depends on the radiation energy, the material thickness penetrated and the quality level of the original radiographic film. This document does not address signal processing, display and storage of the digitised data.

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prIEC 60800/AMD1 ED4 Archyvuotas

Komentavimo iki data 2025-10-29

1 keitinys. Paviršiams šildyti ir apsaugai nuo ledėjimo skirti šildymo kabeliai, kurių nurodytoji įtampa yra iki 300/500 V imtinai

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prEN IEC 63554:2025 Archyvuotas

Komentavimo iki data 2025-10-29

Šviesos diodų (LED) lempos. Saugos reikalavimai

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prEN 60598-2-23:2025 Archyvuotas

Komentavimo iki data 2025-10-29

Šviestuvai. 2-23 dalis. Ypatingieji reikalavimai. Žemiausiosios įtampos apšvietimo sistemos, skirtos tokios įtampos šviesos šaltiniams

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EN IEC 60335-1:2023/prAB:2025 Archyvuotas

Komentavimo iki data 2025-10-29

Buitiniai ir panašios paskirties elektriniai prietaisai. Sauga. 1 dalis. Bendrieji reikalavimai

This European Standard deals with the safety of electrical appliances for household environment and commercial purposes, their rated voltage being not more than 250 V for single-phase and 480 V for others

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prEN IEC 60679-2:2025 Archyvuotas

Komentavimo iki data 2025-10-29

Įvertintos kokybės pjezoelektriniai, dielektriniai ir elektrostatiniai osciliatoriai. 2 dalis. Osciliatorių naudojimo gairės

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prEN IEC 62109-1:2025 Archyvuotas

Komentavimo iki data 2025-10-29

Fotovoltinėse energijos sistemose naudojamų galios keitiklių sauga. 1 dalis. Bendrieji reikalavimai

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prEN IEC 62109-2:2025 Archyvuotas

Komentavimo iki data 2025-10-29

Fotovoltinėse energijos sistemose naudojamų galios keitiklių sauga. 2 dalis. Ypatingieji reikalavimai, keliami inverteriams

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EN ISO 11608-3:2022/prA1:2025 Archyvuotas

Komentavimo iki data 2025-10-28

Medicininės adatinės injekavimo sistemos. Reikalavimai ir bandymo metodai. 3 dalis. Talpyklės ir integruotieji skysčio tekėjimo įtaisai. 1 keitinys (ISO 11608-3:2022/DAmd1:2025)

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prEN ISO 23695 Archyvuotas

Komentavimo iki data 2025-10-28

Vandens kokybė. Amoniakinio azoto kiekio vandenyje nustatymas. Mažo masto tyrimo naudojant užsandarintus mėgintuvėlius metodas (ISO 23695:2023)

This document specifies a method for the determination of ammonium nitrogen (NH4-N) in drinking water, groundwater, surface water, wastewater, bathing water and mineral water using the small-scale sealed tube method. The result can be expressed as NH4 or NH4-N or NH3 or NH3-N. NOTE 1 In the habitual language use of sewage treatment and on the displays of automated sealed-tube test photometers or spectrophotometers, NH4 without indication of the positive charge has become the common notation for the parameter ammonium. This notation is adopted in this document even though not being quite correct chemical nomenclature. This method is applicable to (NH4-N) concentration ranges from 0,01 mg/l to 1 800 mg/l of NH4-N. The measuring ranges of concentration can vary depending on the type of small-scale sealed tube method of different manufacturers. Concentrations even slightly higher than the upper limit indicated in the manufacturers manual relating to the small-scale sealed tube method used, cannot be reported as accurate results. It is up to the user to choose the small-scale sealed tube test with the appropriate application range or to adapt samples with concentrations exceeding the measuring range of a test by preliminary dilution. NOTE 2 The results of a small-scale sealed tube are most precise in the middle of the application range of the test. All manufacturers' methods are based on the Berthelot reaction and its modifications to develop indophenol blue colour. Reagents mixtures can differ slightly based on manufacturers small-scale sealed tube method, see Clause 9. This method is applicable to non-preserved samples by using small-scale sealed tubes for the determination of drinking water, groundwater, surface water, wastewater and to preserved samples. The method is applicable to samples with suspended materials if these materials are removable by filtration.

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prEN ISO 23697-2 Archyvuotas

Komentavimo iki data 2025-10-28

Vandens kokybė. Bendrojo sujungtojo azoto kiekio (ST-TNb) vandenyje nustatymas mažo masto tyrimo naudojant užsandarintus mėgintuvėlius metodu. 2 dalis. Chromotropo rūgšties spalvinė reakcija (ISO 23697-2:2023)

This document specifies a method for the determination of total bound nitrogen (ST-TNb) in water of various origins: groundwater, surface water and wastewater, in a measuring range of concentration generally between 0,5 mg/l and 150 mg/l of ST-TNb using the small-scale sealed tube method. Different measuring ranges of small-scale sealed tube methods can be required. The measuring ranges can vary depending on the type of small-scale sealed tube method of different manufacturers. It is up to the user to choose the small-scale sealed tube test with the appropriate application range or to adapt samples with concentrations exceeding the measuring range of a test by preliminary dilution. NOTE The results of a small-scale sealed tube test are most precise in the middle of the application range of the test. All small-scale sealed tube methods are based on a heated alkaline potassium persulfate oxidation in a heating block at 100 °C and different digestion times are applicable. Chromotropic colour reaction is applied, depending on the typical operating procedure of the small-scale sealed tube used, see Clause 9.

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prEN ISO 23697-1 Archyvuotas

Komentavimo iki data 2025-10-28

Vandens kokybė. Bendrojo sujungtojo azoto kiekio (ST-TNb) vandenyje nustatymas mažo masto tyrimo naudojant užsandarintus mėgintuvėlius metodu. 1 dalis. Dimetilfenolio spalvinė reakcija (ISO 23697-1:2023)

This document specifies a method for the determination of total bound nitrogen (ST-TNb) in water of various origins: groundwater, surface water, and wastewater, in a measuring range of concentration generally between 0,5 mg/l and 220 mg/l of ST-TNb using the small-scale sealed tube method. Different measuring ranges of small-scale sealed tube methods can be required. The measuring ranges can vary depending on the type of small-scale sealed tube method of different manufacturers. It is up to the user to choose the small-scale sealed tube with the appropriate application range or to adapt samples with concentrations exceeding the measuring range of a test by preliminary dilution. NOTE The results of a small-scale sealed tube are most precise in the middle of the application range of the test. All small-scale sealed tube methods are based on a heated alkaline potassium persulfate oxidation in a heating block. Different digestion temperatures, 100 °C or 120 °C or 170 °C, and different digestion times are applicable. Dimethylphenol colour reactions are applied, depending on the typical operating procedure of the small-scale sealed tube used, see Clause 9.

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prEN ISO 23696-2 Archyvuotas

Komentavimo iki data 2025-10-28

Vandens kokybė. Nitratų kiekio vandenyje nustatymas mažo masto tyrimo naudojant užsandarintus mėgintuvėlius metodu. 2 dalis. Chromotropo rūgšties spalvinė reakcija (ISO 23696-2:2023)

This document specifies a method for the determination of nitrate as NO3-N in water of various origin such as natural water (including groundwater, surface water and bathing water), drinking water and wastewater, in a measuring range of concentration between 0,20 mg/l and 30 mg/l of NO3-N using the small-scale sealed tube method. Different measuring ranges of small-scale sealed tube methods can be required. The measuring ranges can vary depending on the type of the small-scale sealed tube method of different manufacturers. It is up to the user to choose the small-scale sealed tube test with the appropriate application range or to adapt samples with concentrations exceeding the measuring range of a test by preliminary dilution. NOTE 1 The results of a small-scale sealed tube test are most precise in the middle of the application range of the test. Manufacturers' small-scale sealed tube methods are based on chromotropic colour reaction, depending on the typical operating procedure of the small-scale sealed tube used, see Clause 9. NOTE 2 Laws, regulations or standards can require that the data is expressed as NO3 after conversion with the stoichiometric conversion factor 4,426 81 in Clause 11. NOTE 3 In the habitual language, use of sewage treatment and on the displays of automated sealed-tube test devices, NO3 without indication of the negative charge has become the common notation for the parameter nitrate and especially for the parameter nitrate-N. This notation is adopted in this document even though not being quite correct chemical nomenclature.

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prEN ISO 23696-1 Archyvuotas

Komentavimo iki data 2025-10-28

Vandens kokybė. Nitratų kiekio vandenyje nustatymas mažo masto tyrimo naudojant užsandarintus mėgintuvėlius metodu. 1 dalis. Dimetilfenolio spalvinė reakcija (ISO 23696-1:2023)

This document specifies a method for the determination of nitrate as NO3-N in water of various origin such as natural water (including groundwater, surface water and bathing water), drinking water and wastewater, in a measuring range of concentration between 0,10 mg/l and 225 mg/l of N03-N using the small-scale sealed tube method. Different measuring ranges of small-scale sealed tube methods can be required. The measuring ranges can vary depending on the type of the small-scale sealed tube method of different manufacturers. It is up to the user to choose the small-scale sealed tube test with the appropriate application range or to adapt samples with concentrations exceeding the measuring range of a test by preliminary dilution. NOTE 1 The results of a sealed-tube test are most precise in the middle of the application range of the test. Manufacturers' small-scale sealed tube methods are based on dimethylphenol colour reaction depending on the typical operating procedure of the small-scale sealed tube used, see Clause 9. NOTE 2 Laws, regulations or standards can require that the data is expressed as NO3- after conversion with the stoichiometric conversion factor 4,426 81 in Clause 11. NOTE 3 In the habitual language, use of sewage treatment and on the displays of automated sealed-tube test devices, NO3 without indication of the negative charge has become the common notation for the parameter nitrate and especially for the parameter nitrate-N. This notation is adopted in this document even though not being quite correct chemical nomenclature.

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prEN 12726 Archyvuotas

Komentavimo iki data 2025-10-28

Stiklinė tara. 18,5 mm angos skersmens iš vidaus sandarinami kakleliai, skirti bandymą atidaryti rodantiems antkamščiams

This document specifies the dimensions of a mouth finish for stoppers and capsules for glass bottles containing a wine that has a carbonation not exceeding 1,2 g CO2/l, with internal sealing. Two options of finish height are proposed, 14 and 16 mm, the most common one being 16 mm. NOTE Carbonation over 1,2 g CO2/l requires a suitable container and stopper agreed between the glassmaker, the stopper manufacturer, and the packer/filler.

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prEN 12266-1 Archyvuotas

Komentavimo iki data 2025-10-28

Pramoninės sklendės. Metalinių sklendžių bandymai. 1 dalis. Slėginiai bandymai, bandymo procedūros ir priėmimo kriterijai. Privalomieji reikalavimai

This document specifies requirements for tests, test procedures and acceptance criteria for production testing of industrial valves made of metallic materials. NOTE The specified tests can also be used as type tests or acceptance tests. This document does not apply to: - industrial valves of thermoplastic materials; - safety valves and bursting discs (safety accessories); - sight glass with its frames (component of a pressure equipment). When specified as a normative reference in a valve product or performance standard, this document is to be considered in conjunction with given specific requirements of the valve product or performance standard. Where requirements in a product or performance standard differ from those given in this document, the requirements of the product or performance standard apply.

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prEN 12516-3 Archyvuotas

Komentavimo iki data 2025-10-28

Pramoninės sklendės. Projektinis apvalkalo stipris. 3 dalis. Eksperimentinis metodas

This document specifies requirements for an experimental method to prove that representative samples of valve shells and their body ends, made in cast iron, steel or copper alloy materials, are designed to possess the required pressure containing capability, with an adequate margin of safety. This document is not applicable to valves designed on the basis of time dependent strength values (creep) or valves designed for pulsating pressure applications (fatigue). For valves in the scope of the European legislation for pressure equipment, the sole use of an experimental method is only permitted when the maximum allowable pressure at room temperature, PS, multiplied by the DN-number is less than 3 000 bar. This document is used to supplement the tabulation method EN 12516-1:2014+A1:2018, and the calculation method EN 12516-2:2014+A1:2021 without limit.

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prEN 300 386 V3.0.0 (2025-08) Viešoji apklausa

Komentavimo iki data 2025-11-02

Telekomunikacijų tinklo įranga. Elektromagnetinio suderinamumo (EMS) reikalavimų darnusis standartas

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prEN 18246 Archyvuotas

Komentavimo iki data 2025-10-21

Skaitmeninis gaminio pasas. Duomenų autentiškumo patvirtinimas, patikimumas ir vientisumas

This document defines the requirements and frameworks for secure information processing and communication to safeguard integrity, authenticity and reliability in the digital product passport (DPP) data exchange, minimizing product fraud and counterfeiting through data verification and integrity enforcement mechanisms. This document provides a framework for establishing trust, interoperability, and interoperation via secure electronically signed data construct (ESDC) for multi-actor applications, applicable across various sectors and in multilingual environments. Existing hardware and software systems for unique product identification and storage of this identification are to be considered. The following is out of the scope of this document: system architecture for DPP, DPP use cases, secure elements related to data carriers and cryptographic security features for unique product identifiers. NOTE 1 While not disrupting existing traceability and authentication systems, this document facilitates interoperability by introducing an ESDC scheme to be combined with existing data constructs to cover and preserve existing data models. NOTE 2 Annex A includes illustrative examples and references to supporting implementations, intended to demonstrate approaches that promote interoperability across diverse environments. These references are provided to assist stakeholders in selecting appropriate solutions that comply with applicable legal obligations and technical standards, while preserving existing systems.

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