Standartų projektų sąrašas

prEN 300 392-3-15 V1.5.0 (2026-04) Viešoji apklausa

Komentavimo iki data 2026-06-21

Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 15: Transport layer independent Additional Network Feature, Mobility Management (ANF-ISIMM)

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prEN 1401-1 Viešoji apklausa

Komentavimo iki data 2026-07-03

Beslėgio požeminio nuotakyno plastikinių vamzdžių sistemos. Neplastifikuotas polivinilchloridas (PVC-U). 1 dalis. Vamzdžių, jungiamųjų detalių ir iš jų sudarytos sistemos techniniai reikalavimai

This document specifies the definitions and requirements for solid wall pipes with smooth internal and external surfaces, extruded from the same formulation throughout the wall, fittings and the system of unplasticized poly(vinyl chloride) (PVC-U) piping systems in the field of non-pressure underground drains and sewers for wastewater. NOTE 1 Products complying with this document can also be used in non-pressure underground drains and sewers for surface water. This document also specifies test methods and test parameters. This document is applicable to: — solid wall pipes and fittings which are intended to be used buried underground outside the building structure reflected in the marking of the products by “U”, and — solid wall pipes and fittings which are intended to be used buried underground both outside (application area code “U”) and within the building structure reflecting on the marking of products by “UD”. NOTE 2 Multilayer pipes with different formulations throughout the wall and foamed core pipes are covered by EN 13476-2 [1]. This document covers a range of pipe and fitting sizes, stiffness classes, and gives recommendations concerning colours. NOTE 3 It is the responsibility of the purchaser or specifier to make the appropriate selection from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. In conjunction with CEN/TS 1401-2 [7] it is applicable to PVC-U pipes and fittings, their joints and to joints with components of other plastics and non-plastics materials intended for buried piping systems for non-pressure underground drains and sewers. NOTE 4 Pipes, fittings and other components conforming to any of the plastics product standards listed in Annex C can be used with pipes and fittings conforming to this document, provided they conform to the requirements for joint dimensions given in Clause 10 and to the requirements of Table 16.

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prEN ISO 11148-13 Viešoji apklausa

Komentavimo iki data 2026-07-09

Rankiniai neelektriniai varikliniai įrankiai. Saugos reikalavimai. 13 dalis. Įrankiai tvirtinimo detalėms įsukti (ISO/DIS 11148‑13:2026)

ISO 11148-13:2017 specifies safety requirements for hand-held non-electric power tools (hereinafter referred to as "fastener driving tools") intended for installation of a fastener (see Annex B), forming a mechanical connection or attachment with the workpiece which are for example wood and wood-based materials, plastic materials, fibre materials (loose or compacted), cementitious materials, metals and combinations of these materials. The fastener driving tools for fasteners can be powered by compressed air or combustible gases (which may be ignited by a battery or accumulator) and the energy is transmitted to an impacted element by an intermediary component that does not leave the device. These tools are intended to be used by one operator and supported by the operator's hand or hands, with or without a suspension, e.g. a balancer. ISO 11148-13:2017 is applicable to fastener driving tools in which energy is applied to a loaded fastener for the purpose of driving this into a workpiece. ISO 11148-13:2017 is not applicable to fastener driving tools in which the energy for driving fasteners is drawn from powder-actuated cartridges, hydraulics or from any type of electrical supply. ISO 11148-13:2017 does not deal with special requirements and modifications of hand-held power tools for the purpose of mounting them in a fixture. ISO 11148-13:2017 deals with all significant hazards, hazardous situations or hazardous events relevant to fastener driving tools for fasteners when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer, with the exception of the use of power tools in potentially explosive atmospheres. NOTE ISO 80079?36 gives requirements for non-electrical equipment for potentially explosive atmospheres.

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prEN ISO 25237 Viešoji apklausa

Komentavimo iki data 2026-07-28

Sveikatos informatika. Pseudonimų suteikimas (ISO/DIS 25237:2026)

ISO 25237:2017 contains principles and requirements for privacy protection using pseudonymization services for the protection of personal health information. This document is applicable to organizations who wish to undertake pseudonymization processes for themselves or to organizations who make a claim of trustworthiness for operations engaged in pseudonymization services. ISO 25237:2017 - defines one basic concept for pseudonymization (see Clause 5), - defines one basic methodology for pseudonymization services including organizational, as well as technical aspects (see Clause 6), - specifies a policy framework and minimal requirements for controlled re-identification (see Clause 7), - gives an overview of different use cases for pseudonymization that can be both reversible and irreversible (see Annex A), - gives a guide to risk assessment for re-identification (see Annex B), - provides an example of a system that uses de-identification (see Annex C), - provides informative requirements to an interoperability to pseudonymization services (see Annex D), and - specifies a policy framework and minimal requirements for trustworthy practices for the operations of a pseudonymization service (see Annex E).

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prEN ISO 7198 Viešoji apklausa

Komentavimo iki data 2026-07-30

Širdies ir kraujagyslių implantai bei ekstrakorporinės sistemos. Kraujagyslių protezai. Vamzdiniai kraujagyslių transplantantai ir kraujagyslių lopai (ISO/DIS 7198:2026)

ISO 7198:2016 specifies requirements for the evaluation of vascular prostheses and requirements with respect to nomenclature, design attributes and information supplied by the manufacturer, based upon current medical knowledge. Guidance for the development of in vitro test methods is included in an informative annex to ISO 7198:2016. It can be considered as a supplement to ISO 14630:2012, which specifies general requirements for the performance of non-active surgical implants. NOTE Due to the variations in the design of implants covered by ISO 7198 :2016 and, in some cases, due to the relatively recent development of some of these implants (e.g. bioabsorbable vascular prostheses, cell based tissue engineered vascular prostheses), acceptable standardized in vitro tests and clinical results are not always available. As further scientific and clinical data become available, appropriate revision of ISO 7198 :2016 will be necessary. It is applicable to sterile tubular vascular grafts implanted by direct visualization surgical techniques as opposed to fluoroscopic or other non-direct imaging (e.g. computerized tomography or magnetic resonance imaging), intended to replace, bypass, or form shunts between segments of the vascular system in humans and vascular patches intended for repair and reconstruction of the vascular system. Vascular prostheses that are made of synthetic textile materials and synthetic non-textile materials are within the scope of ISO 7198:2016. While vascular prostheses that are made wholly or partly of materials of non-viable biological origin, including tissue engineered vascular prostheses are within the scope, ISO 7198:2016 does not address sourcing, harvesting, manufacturing and all testing requirements for biological materials. It is further noted that different regulatory requirements might exist for tissues from human and animal sources. Compound, coated, composite, and externally reinforced vascular prostheses are within the scope of ISO 7198:2016. Endovascular prostheses implanted using catheter delivery and non-direct visualization are excluded from the scope of ISO 7198:2016. It includes information on the development of appropriate test methods for graft materials, referenced in ISO 25539‑1 for materials used in the construction of endovascular prostheses (i.e. stent-grafts). NOTE Requirements for endovascular prostheses are specified in ISO 25539‑1. The valve component of valved conduits constructed with a tubular vascular graft component, and the combination of the valved component and the tubular vascular graft component, are excluded from the scope of ISO 7198:2016. It can be helpful in identifying the appropriate evaluation of the tubular vascular graft component of a valved conduit but specific requirements and testing are not described for these devices. Cardiac and pericardial patches, vascular stents, accessory devices such as anastomotic devices, staplers, tunnelers and sutures, and pledgets are excluded from the scope of ISO 7198:2016. NOTE Requirements for vascular stents are specified in ISO 25539‑2. Requirements regarding cell seeding are excluded from the scope of ISO 7198:2016. Tissue engineered vascular prostheses that contain or are manufactured using cells present many distinct manufacturing (e.g. aseptic processing, cell seeding, etc.) and testing issues than those produced with synthetic or non-viable biological materials. The in vitro testing requirements that are outlined in ISO 7198:201

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prEN 16510-2-8 Archyvuotas

Komentavimo iki data 2026-06-09

Gyvenamosioms patalpoms skirti kietojo kuro prietaisai. 2-8 dalis. Patalpų šildymo krosnys, kūrenamos gravimetriniu būdu tiekiamomis granulėmis

This document is applicable to gravimetrically pellet-fed room heaters, inset appliances and cookers. The intended use of the appliances is space heating in residential buildings and can be cooking. These appliances burn wood pellets only as specified in EN ISO 17225. This document is not applicable to appliances which are in addition intended for non-gravimetrically fuelling with wood logs (e.g. from the front on top of the burner pot or even if a cover of the burner pot is provided and intended to be used). This document is not applicable to appliances with fan assisted combustion air, appliances that are mechanically or to appliances fitted with a boiler (integral part of the appliance containing water to be heated up) for the supply of hot water for central heating systems. This document is not applicable to appliances that can operate with fire door open. This document specifies procedures for assessment and verification of constancy of performance (AVCP) of characteristics of solid fuel burning room heaters.

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prEN 1992-4 Archyvuotas

Komentavimo iki data 2026-06-11

Eurokodas 2. Gelžbetoninių konstrukcijų projektavimas. 4 dalis. Betone naudojamų tvirtinimo priemonių projektavimas

(1) EN 1992-4 provides a design method for fastenings (connection of structural elements and non-structural elements to structural components), which are used to transmit actions to the concrete. NOTE 1 Additional rules for the transmission of the fastener loads within the concrete member to its supports are given in EN 1992 1 1:2004, 2.7 and Annex A of this EN. NOTE 2 Inserts embedded in precast concrete elements during production, under Factory Production Control (FPC) conditions and with the due reinforcement, intended for use only during transient situations for lifting and handling, are covered by CEN/TR 15728. (2) EN 1992-4 is intended for safety related applications in which the failure of fastenings can result in collapse or partial collapse of the structure, cause risk to human life or lead to significant economic loss. (3) The support of the fixture can be either statically determinate or statically indeterminate. Each support can consist of one fastener or a group of fasteners. (4) EN 1992-4 is valid for applications which fall within the scope of the EN 1992 series. In applications where special considerations apply, e.g. nuclear power plants or civil defence structures, modifications can be necessary. (5) EN 1992-4 does not cover the design of the fixture. NOTE Rules for the design of the fixture are given in the appropriate standards meeting the requirements on the fixture as given in EN 1992-4.

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prEN 2883 Viešoji apklausa

Komentavimo iki data 2026-06-30

Aerospace series — Nuts, hexagonal, self-locking, with counterbore and captive washer, in heat resisting steel, MoS2 lubricated — Classification : 1 100 MPa (at ambient temperature) / 315 °C

This document specifies the characteristics of self-locking hexagonal nuts, with counterbore and captive washer, in heat resisting steel, MoS2 lubricated. Classification: 1 100 MPa1/315 °C2.

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prEN 17526 Viešoji apklausa

Komentavimo iki data 2026-07-09

Dujų skaitikliai. Šiluminio masės srauto matuoklio principu veikiantys dujų skaitikliai

This document specifies requirements and tests for the construction, performance, safety and production of battery powered class 1,5 Capillary Thermal-Mass Flow sensor gas meters (hereinafter referred to as meter(s)). This applies to meters having co-axial single pipe, or two pipe connections, which are used to measure volumes of fuel gases of the 2nd and/or 3rd family, as given in EN 437:2021. In general, the term "thermal mass flow meters" applies to a flow-measuring device using heat transfer to measure and indicate gas flowrate, as defined in ISO 14511. NOTE Although the word "mass" is present in the definition of the measurement principle, gas meters covered by this document provide measurement of gas at base conditions of temperature and pressure. These meters have a maximum working pressure not exceeding 0,5 bar and a maximum flowrate not exceeding 160 m3/h over a minimum ambient temperature range of −10 °C to +40 °C and a gas temperature range as specified in the marking, with a minimum range of 40 °C. For meters designed for hydrogen measurement, the maximum flowrate is not exceeding 480 m3/h, whilst the other characteristics are as stated above. This document applies to meters indicating volume at base conditions, which are installed in locations with vibration and shocks of low significance. It applies to meters in: - closed locations (indoor or outdoor with protection, as specified in the instruction manual) with condensing humidity or with non-condensing humidity; or, if specified in the marking: - open locations (outdoor without any covering) both with condensing humidity or with non-condensing humidity; and in locations with electromagnetic disturbances likely to be found in residential, commercial and light industrial use. For meters which indicate unconverted volume, reference can be made to Annex C. Unless otherwise stated, all pressures given in this document are gauge pressures. Requirements for electronic indexes, valves and additional requirements for batteries incorporated in the meter and any other additional functionalities are given in EN 16314:2013. Unless otherwise stated in a particular test, the tests are carried out on meters that include additional functionality devices, as indicated in the instruction manual. Clauses 1 to 13 are for design and type testing only. For meters designed for blended gas and/or hydrogen measurement, refer to Annex E. This document refers only to hydrogen as specified in ISO 14687:2025 with a purity of type I grade A or better. Unless otherwise stated, all tests applicable to 2nd and 3rd family gases are applicable also to blended gas and hydrogen. Mixtures with a hydrogen concentration above 20 % and below 98 % by volume are not covered by this document.

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prEN ISO/IEC 19788-3 Viešoji apklausa

Komentavimo iki data 2026-07-28

Informacinės technologijos mokymuisi, ugdymui ir rengimui. Mokymosi išteklių metaduomenys. 3 dalis. Pagrindinis taikomųjų programų profilis (ISO/DIS 19788-3:2026)

The primary purpose of ISO/IEC 19788 is to specify metadata elements and their attributes for the description of learning resources. This includes the rules governing the identification of data elements and the specification of their attributes. ISO/IEC 19788 provides data elements for the description of learning resources and resources directly related to learning resources. ISO/IEC 19788-3:2011 is designed to help implementers with a starting point for adopting ISO/IEC 19788, defining an application profile that specifies, through adding constraints to the use of some data elements, how the ISO/IEC 19788-2 element set can be used.

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prEN IEC 62052-11:2026 Naujas

Komentavimo iki data 2026-08-12

Elektros matavimo įranga. Bendrieji reikalavimai, bandymai ir bandymų sąlygos. 11 dalis. Matavimo įranga

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prEN ISO 20471 Archyvuotas

Komentavimo iki data 2026-06-09

Apsauginė apranga. Gerai matoma įspėjamoji apranga, skirta didelės rizikos situacijoms. Bandymo metodai ir reikalavimai (ISO/DIS 20471:2026)

ISO 20471:2013 specifies requirements for high visibility clothing which is capable of visually signalling the user's presence. The high visibility clothing is intended to provide conspicuity of the wearer in any light condition when viewed by operators of vehicles or other mechanized equipment during daylight conditions and under illumination of headlights in the dark. Performance requirements are included for colour and retroreflection as well as for the minimum areas and for the placement of the materials in protective clothing.

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prEN ISO 18674-6 Viešoji apklausa

Komentavimo iki data 2026-06-17

Geotechniniai tyrinėjimai ir bandymai. Geotechniniai stebėjimai naudojant matavimų lauko sąlygomis aparatūrą. 6 dalis. Nuosėdžio matavimas. Hidraulinės nuosėdžio matavimo sistemos (ISO/DIS 18674-6:2026)

This standard specifies the measurement of settlement of geotechnical structures/works or structures influenced by geotechnical works by means of hydraulic settlement systems. General rules of performance monitoring of the ground, or structures interacting with the ground, of geotechnical fills and of geotechnical works are presented in ISO 18674-1:2015. This document is applicable to: — monitoring of settlement acting onto, or within, geotechnical structures such as embankments, excavations, compensation grouting, tunnel lining, railways, roads and other civil structures; — checking geotechnical designs and adjustment of construction in connection with the Observational Design procedure; evaluating (subsoil) stability during or after construction.

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prEN ISO 23402-2 Viešoji apklausa

Komentavimo iki data 2026-06-30

Odontologija. Nešiojamoji odontologijos įranga, skirta naudoti ne sveikatos priežiūros įstaigose. 2 dalis. Nešiojamoji odontologijos įranga (ISO/DIS 23402-2:2026)

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prEN 50206-1:2026 Viešoji apklausa

Komentavimo iki data 2026-07-31

Geležinkelio taikmenys. Riedmenys. Pantografai. Charakteristikos ir bandymai. 1 dalis. Geležinkelio magistralės transporto priemonių pantografai

This document specifies the general assembly characteristics applied to pantographs and their control unit, to enable current collection from the overhead contact line system. It also specifies the tests the pantographs and their control unit need to perform. This document is not applicable to pantograph dielectric tests performed on the pantograph installed on the vehicle roof. Insulation coordination is covered in EN 50124 1. This document is not applicable to pantographs used on isolated metros and light rail systems. These pantographs are considered in EN 50206 2. This document is not applicable to third and fourth rail current collectors used on isolated metros and light rail systems. These pantographs are considered in EN 50702.

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prEN IEC 60335-2-42:2026/prA1:2026 Viešoji apklausa

Komentavimo iki data 2026-08-05

Buitiniai ir panašios paskirties elektriniai prietaisai. Sauga. 2-42 dalis. Ypatingieji reikalavimai, keliami komercinėms elektrinėms konvekcinėms orkaitėms, garpuodžiams ir garinėms konvekcinėms orkaitėms

This European Standard deals with the safety of electrically operated commercial forced convection ovens, steam cookers, steam-convection ovens and, exclusive of any other use, steam generators, not intended for household use. The rated voltage being not more than 250 V for single-phase appliances connected between one phase and neutral and 480 V for other appliances. Appliances within the scope of this standard are typically used in restaurants, canteens, hospitals and commercial enterprises such as bakeries, butcheries, etc

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prEN ISO 15487 Viešoji apklausa

Komentavimo iki data 2026-06-16

Tekstilė. Aprangos ir kitų gatavų tekstilės gaminių išvaizdos vertinimo po buitinio skalbimo ir džiovinimo metodas (ISO/DIS 15487:2026)

This document specifies a method of test for evaluating the appearance of apparel and other textile end products after one or several domestic washing and drying treatments. The appearance evaluated includes colour change, pilling, fuzzing, matting appearance of fabrics, smoothness appearance of flat fabric and seams, and the retention of pressed-in creases in garments and other textile products, damage of components ? buttons, press fasteners, slide fasteners, etc. This document is applicable to any washable textile end product of any fabric construction. Techniques for seaming and creasing are not included since the purpose is to evaluate textile end products as they are supplied from the manufacturer or as ready-to-use. Techniques for seaming and creasing are controlled by fabric properties. This method has been developed primarily for use with domestic washing machines of Type B as defined in ISO 6330, but it can be used with any type of machine defined in ISO 6330. It is recognized that prints and patterns can mask the wrinkled appearance present in textile end products. The rating process is, however, based on the visual appearance of specimens including such effects.

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EN 1991-1-5:2025/prA1 Viešoji apklausa

Komentavimo iki data 2026-07-02

Eurokodas 1. Poveikiai konstrukcijoms. 1-5 dalis. Šiluminiai poveikiai

1.1 Scope of EN 1991-1-5 (1) EN 1991-1-5 gives principles and rules for calculating thermal actions on buildings, bridges and other structures including their structural members. Principles needed for cladding and other attachments of buildings are also provided. (2) This document describes the changes in the temperature of structural members. Characteristic values of thermal actions are presented for use in the design of structures which are exposed to daily and seasonal climatic changes. (3) This document also gives principles for changes in the temperature of structural members due to the paving of hot asphalt on bridge decks. (4) This document also provides principles and rules for thermal actions acting in structures which are mainly a function of their use (e.g. cooling towers, silos, tanks, warm and cold storage facilities, hot and cold services, etc.). NOTE Supplementary guidance for thermal actions on chimneys is provided in EN 13084-1. 1.2 Assumptions (1) The assumptions given in EN 1990:2023, 1.2 apply. (2) EN 1991 1 5 is intended to be used with EN 1990, the other parts of EN 1991 and EN 1992 (all parts) to EN 1999 (all parts) for the design of structures.

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prEN ISO 7389 Viešoji apklausa

Komentavimo iki data 2026-06-30

Pastatų ir inžinerinių statinių sandarikliai. Sandariklių tampriosios grįžties nustatymas (ISO/DIS 7389:2026)

This International Standard specifies a method for the determination of the elastic recovery of sealants after maintained extension.

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prEN 843-9 Viešoji apklausa

Komentavimo iki data 2026-07-30

Modernioji techninė keramika. Monolitinės keramikos mechaninės savybės kambario temperatūroje. 9 dalis. Bandymo metodas nustatyti atsparumą kraštų atsilupimui

This document specifies two test methods for the determination of the resistance of the edges of brittle ceramic materials to be damaged by chipping. This document is applicable to homogeneous monolithic ceramics with flat surfaces and straight sharp or chamfered edges.

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prEN 12814-2 Viešoji apklausa

Komentavimo iki data 2026-07-31

Termoplastikinių pusgaminių suvirintųjų jungčių bandymai. 2 dalis. Tempimo bandymas

This document specifies the dimensions, the method of sampling, the preparation of the test specimens and the conditions for performing the tensile test in order to determine the short-term tensile welding factor. A tensile test can be used in conjunction with other tests (e.g. bend, tensile creep, macro) to assess the performance of welded assemblies, made from thermoplastics materials. The test is applicable to welded semi-finished products made from thermoplastics materials filled or unfilled, but not reinforced, irrespective of the welding process used.

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prEN ISO 10704 Viešoji apklausa

Komentavimo iki data 2026-07-12

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

Warning — Persons using this document should be familiar with normal laboratory practice. This document does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices. IMPORTANT — It is absolutely essential that tests conducted in accordance with this document be carried out by suitably qualified staff. This document specifies a method for the determination of gross alpha and gross beta activity concentrations 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 cannot be detected (e.g. 3H, 55Fe, 241Pu) or can only be partially detected (e.g. 14C, 35S, 63Ni, 210Pb, 228Ra). If the presence of low-energy beta emitters is strongly suspected, liquid scintillation analysis is recommended (ISO 11704). The method described in this document applies to non-volatile radionuclides, since some gaseous or volatile radionuclides (e.g. radon and radioiodine) can be lost during the source preparation. The method described in this document is applicable to test samples of drinking water, rainwater, sea water, 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 can be used 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-1 and 20 Bq·l-1, respectively, for instance for rainwater water. The evaporation of a 10 ml sample can be carried out in 20 min followed by 10 min counting using a gas-flow -proportional counter with window. It is the laboratory’s responsibility to ensure the suitability of this test method for the water samples tested.

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prEN ISO 9308-2 Viešoji apklausa

Komentavimo iki data 2026-06-13

Vandens kokybė. Žarninių lazdelių (Escherichia coli) ir koliforminių bakterijų skaičiavimas. 2 dalis. Tikimiausiojo skaičiaus metodas (ISO/DIS 9308-2:2026)

This document specifies a method for the enumeration of E. coli and coliform bacteria in water. The method is based on the growth of target organisms in a liquid medium and calculation of the “Most Probable Number” (MPN) of organisms by reference to MPN tables or by use of appropriate formulae 1]. This method can be applied to a range of types of water (for example drinking water, groundwater, surface water, recreational water and wastewater),[2-5] including those containing a considerable amount of suspended matter and high background counts of heterotrophic bacteria. Users should satisfy themselves that any product used has been validated for its intended use (e.g. chlorinated drinking water) and should generate performance characteristics using ISO13843.[6] Performance characteristic data generated prior to 2017 using ISO TR 13843[7] is also acceptable. If a water sample has some background colour, the incubated sample should be compared to a blank control of the same water sample This method relies upon the detection of E. coli based upon expression of the enzyme β‑D‑glucuronidase and consequently does not detect some enteropathogenic strains of E. coli, which do not typically express this enzyme. Additionally, there are a small number of other E. coli strains that do not express β‑D‑glucuronidase. As they are β‑D‑galactosidase positive, they will appear as coliform bacteria.

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prEN IEC 60731:2026 Viešoji apklausa

Komentavimo iki data 2026-06-17

Elektrinė medicinos įranga. Radioterapijoje naudojami dozimetrai su jonizacijos kameromis arba kietojo kūno jutikliais

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prEN IEC 63409-7:2026 Viešoji apklausa

Komentavimo iki data 2026-07-08

Fotovoltinių elektros energijos gamybos sistemų prijungimas prie tinklo. Galios keitimo įrangos bandymas. 7 dalis. Nuotolinis konfigūravimas, valdymas ir stebėsena

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