GDPR

Mandatory cookies

Mandatory cookies enable the main website functions. Without the aforementioned cookies the website cannot function properly. These cookies can be turned off only by changing the browser settings.

Statistics cookies

Analytical cookies allow us to improve the website by collecting and providing information about its usage.

Newsletter subscription

projektai-lsd Lithuanian Standards Board
Portal for draft standards
Register

List of drafts

Extended search

till

Results

Showing:
Total records found: 237
arrow-prev 1 … 8 9 10
prEN IEC 62109-2:2025 Archived
Comment end date 2025-10-29
Safety of power converters for use in photovoltaic power systems - Part 2: Particular requirements for inverters
View
EN ISO 11608-3:2022/prA1:2025 Archived
Comment end date 2025-10-28
Needle-based injection systems for medical use - Requirements and test methods - Part 3: Containers and integrated fluid paths - Amendment 1 (ISO 11608-3:2022/DAmd1:2025)
View
prEN ISO 23695 Archived
Comment end date 2025-10-28
Water quality - Determination of ammonium nitrogen in water - Small-scale sealed tube method (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.

View
prEN ISO 23697-2 Archived
Comment end date 2025-10-28
Water quality - Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Part 2: Chromotropic acid colour reaction (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.

View
prEN ISO 23697-1 Archived
Comment end date 2025-10-28
Water quality - Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Part 1: Dimethylphenol colour reaction (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.

View
prEN ISO 23696-2 Archived
Comment end date 2025-10-28
Water quality - Determination of nitrate in water using small-scale sealed tubes - Part 2: Chromotropic acid colour reaction (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.

View
prEN ISO 23696-1 Archived
Comment end date 2025-10-28
Water quality - Determination of nitrate in water using small-scale sealed tubes - Part 1: Dimethylphenol colour reaction (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.

View
prEN 12726 Archived
Comment end date 2025-10-28
Glass packaging - Neck finishes with a bore diameter of 18,5 mm for internal sealing and tamper evident capsules

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.

View
prEN 12266-1 Archived
Comment end date 2025-10-28
Industrial valves - Testing of metallic valves - Part 1: Pressure tests, test procedures and acceptance criteria - Mandatory requirements

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.

View
prEN 12516-3 Archived
Comment end date 2025-10-28
Industrial valves - Shell design strength - Part 3: Experimental method

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.

View
prEN 300 386 V3.0.0 (2025-08) Archived
Comment end date 2025-11-02
Telecommunication network equipment; Harmonised Standard for ElectroMagnetic Compatibility (EMC) requirements
View
prEN 18246 Archived
Comment end date 2025-10-21
Digital product passport - Data authentication, reliability and integrity

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.

View
Total records found: 237
arrow-prev 1 … 8 9 10

Quick filters

Organisation
CEN Europos standartizacijos komitetas (157) ETSI Europos telekomunikacijų standartų institutas (3) ISO Tarptautinė standartizacijos organizacija (8) CENELEC Europos elektrotechnikos standartizacijos komitetas (66) IEC Tarptautinė elektrotechnikos komisija (1) LST Lietuvos standartizacijos departamentas (2)
Technical Committee
TK 1 Electronics (5) TK 4 Information technology (3) TK 5 Electrical engineering (17) TK 8 Electromagnetic compatibility (3) TK 9 Furniture (1) TK 12 Motor - roads (1) TK 13 Agricultural engineering (3) TK 15 Cereals, cereal products, bread and animal feeding stuffs (5) TK 17 Woods (5) TK 18 Telecommunications (3) TK 19 Concrete and reinforced concrete (4) TK 21 Textiles and personal protective equipment (2) TK 22 Fire safety (1) TK 23 Ceramic tiles, masonry and natural stones (1) TK 24 Quality management and quality assurance (1) TK 25 Matrix, gypsum and gypsum based products (2) TK 26 Thermal insulation materials (4) TK 29 Water supply (1) TK 32 Health (11) TK 35 Safety of machinery (5) TK 36 Environmental protection (7) TK 40 Petroleuml, petroleum products, lubricants and alternative fuels (3) TK 41 Welding (3) TK 42 Packaging (5) TK 43 Railway traffic (8) TK 45 Electric power (9) TK 50 Heating and Ventilation Systems (2) TK 51 Food analysis- Horizontal methods (3) TK 56 Equipment for petroleum industry (13) TK 57 Fertilizers (9) TK 59 Geotechnics (4) TK 65 Tourism services (3) TK 66 Non-destructive testing (2) TK 70 Pulp, paper, board, adhesives (5) TK 76 Explosive atmospheres (1) TK 77 Lifts (3) TK 79 IT security techniques (6) TK 80 Road transport and traffic telematics (2) TK 84 Chimneys and solid fuel burning appliances (1) TK 86 Geographic information (1) TK 87 Biotechnology (1) TK 90 Human resource and knowledge management (1) TK 91 Asset management and technical maintenance (1) TK 98 Digital Product Passport (DPP) (1) TK 99 Health Informatics (2)
ICS
Acid secondary cells and batteries (1) Additive manufacturing (1) Adhesives (3) Advanced ceramics (1) Aerospace electric equipment and systems (4) Agricultural tractors and trailed vehicles (1) Alarm and warning systems (1) Anaesthetic, respiratory and reanimation equipment (2) Audio, video and audiovisual systems in general (1) Automatic controls for household use (1) Biology. Botany. Zoology (1) Bottles. Pots. Jars (1) Cables (1) Ceilings. Floors. Stairs (1) Cement. Gypsum. Lime. Mortar (2) Cereals, pulses and derived products (4) Chemical laboratories. Laboratory equipment (1) Chimneys, shafts, ducts (1) Concrete and concrete products (3) Concrete structures (1) Construction materials in general (2) Construction of railways (1) Cookware, cutlery and flatware (2) Cranes (3) Cycles (1) Diagnostic equipment (1) Domestic safety (3) Earthworks. Excavations. Foundation construction. Underground works (2) Ecolabelling (1) Electric road vehicles (2) Electrical and electronic equipment (1) Electrical apparatus for explosive atmospheres (1) Electrical engineering in general (1) Electricity supply systems (1) Electromechanical components in general (1) Enamels (1) Exploratory, drilling and extraction equipment (2) Explosives. Pyrotechnics and fireworks (1) Fasteners in general (1) Fertilizers (8) Fibre optic interconnecting devices (3) Fire protection (1) Fixed resistors (2) Floor coverings (2) Fluid storage devices in general (2) Fluid systems and components for general use (Vocabularies) (1) Footwear (1) Furniture (1) Fuses and other overcurrent protection devices (1) General methods of tests and analysis for food products (1) Geotextiles (1) Governance and ethics (1) Head protective equipment (2) Hospital equipment (1) Immunity (1) In vitro diagnostic test systems (1) Industrial process measurement and control (2) Information technology (IT) in general (2) Iron and steel castings (1) Iron and steel products in general (1) IT applications in health care technology (1) IT applications in trade (1) IT applications in transport (2) IT Security (6) Leather and furs (2) Leg and foot protection (3) Leisure and tourism in general (1) Liquid fuels (1) Low voltage switchgear and controlgear (1) Luminaires (2) Management of human resources (2) Management systems (1) Materials and components for railway engineering (1) Metallic coatings (1) Milk and processed milk products (1) Nuclear power plants. Safety (3) Oilseeds (1) On-board equipment and instruments (1) Other agricultural machines and equipment (1) Other cells and batteries (1) Other graphical symbols (1) Other medical equipment (1) Other pipeline components (2) Other semiconductor devices (4) Paints and varnishes (1) Paper and board (2) Petroleum products in general (1) Physicochemical methods of analysis (1) Physics. Chemistry (1) Piezoelectric devices (1) Pigments and extenders (2) Pipelines and its parts for district heat (2) Plastics and rubber insulating materials (1) Plastics in general (1) Plug-and-socket devices. Connectors (1) Power transmission and distribution networks in general (1) Printed circuits and boards (1) Processing equipment (2) Product life-cycles (1) Radiation measurements (1) Radiation protection (1) Railway rolling stock in general (5) Relays (1) Research and development (1) Road equipment and installations (1) Rotating machinery in general (2) Semiconductor devices in general (1) Solar energy engineering (3) Sports facilities (1) Standardization. General rules (1) Stationary containers and tanks (1) Sterilization and disinfection in general (1) Surface preparation (1) Syringes, needles and catheters (1) Technical product documentation (1) TELECOMMUNICATIONS. AUDIO AND VIDEO ENGINEERING (3) Textile auxiliary materials (3) Textile fibres in general (1) Textiles in general (1) Thermal and sound insulating materials (2) Transfusion, infusion and injection equipment (1) Valves in general (2) Volumetric equipment and measurements (1) Water supply systems (2) Welding equipment (1) Wood-protecting chemicals (5)