Standartų projektų sąrašas

prEN 17758 Viešoji apklausa

Komentavimo iki data 2026-05-05

Trąšos ir kalkinimo medžiagos. Chloridų kiekio nustatymas potenciometrinio titravimo metodu

This document specifies a method for the determination of the chloride content in organic fertilizers, organo-mineral fertilizers, inorganic fertilizers and liming materials by potentiometric titration. This document is applicable to fertilizing product blends, where a blend is a mix of at least two of the following components, fertilizers and liming materials, and where the following category, organic fertilizers, organo-mineral fertilizers, inorganic fertilizers or liming materials, is the highest % in the blend by mass or volume, or in the case of liquid form, by dry mass. If organic fertilizers, organo-mineral fertilizers, inorganic fertilizers, or liming materials is not the highest % in the blend, the European Standard for the highest % of the blend applies. In case a fertilizing product blend is composed of components in equal quantity, the user decides which standard to apply. NOTE Variations in analytical methods for fertilizing product blends can lead to differing results as some components or matrix interactions can affect the outcome. Validation procedures have shown that developed standard methods are robust and reliable across diverse product compositions, but possible interferences and unexpected results when analysing fertilizing product blends are possible.

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prEN 15478 Viešoji apklausa

Komentavimo iki data 2026-05-05

Neorganinės trąšos. Visuminio azoto kiekio nustatymas karbamide, metilenkarbamide ir karbamido formaldehide

This document specifies a method for the determination of the content of total nitrogen in urea, methylene-urea and urea formaldehyde in their pure form in inorganic fertilizers.

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prEN 17760 Viešoji apklausa

Komentavimo iki data 2026-05-05

Neorganinės trąšos. Didelį azoto kiekį turinčių amonio nitrato trąšų dalelių matmenų nustatymas

This document specifies a method for the determination of the mass fractions of ammonium nitrate fertilizers of high nitrogen content that passes certain mesh sieves (0,5 mm and 1,0 mm). This document is not applicable to fertilizing products blends, other than ammonium nitrate fertilizers of high nitrogen content.

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prEN 17403 Viešoji apklausa

Komentavimo iki data 2026-05-05

Neorganinės trąšos. Šaltame vandenyje netirpaus azoto ir karštame vandenyje netirpaus azoto nustatymas lėtai veikiančiose biriosiose karbamidformaldehidinėse bei metilenkarbamidinėse trąšose ir maisto medžiagų polimerų tirpumo pH 7,5 fosfatiniame buferiniame tirpale esant 100 °C nustatymas

This document specifies a method for the determination of the cold and hot water insoluble nitrogen content in solid urea formaldehyde and methylene urea slow-release fertilizers and for the determination of the solubility of nutrient polymers in a phosphate buffer solution with a pH of 7,5 at 100 °C, in their pure form in inorganic fertilizers. This document is not applicable to the following nutrient polymers: liquid methylene urea.

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prEN 18316 Viešoji apklausa

Komentavimo iki data 2026-05-05

Neorganinės trąšos. Visuminio K2O kiekio nustatymas

This document specifies two different methods (Method A and B) for the determination of the content of potassium (expressed as K2O) in inorganic fertilizers. Method A specifies a gravimetric method. Method B specifies the method using inductively coupled plasma optical emission spectrometry (ICP-OES). This document is applicable to fertilizing product blends, where the blend is a mix of at least two of the following components, fertilizers, liming materials, soil improvers, growing media, inhibitors and plant biostimulants, and where inorganic fertilizers are the highest % in the blend by mass or volume, or in the case of liquid form, by dry mass. If inorganic fertilizers are not the highest % in the blend, the European Standard for the highest % of the blend applies. In case a fertilizing product blend is composed of components in equal quantity, the user decides which standard to apply. NOTE Variations in analytical methods for fertilizing product blends can lead to differing results as some components or matrix interactions can affect the outcome. Validation procedures have shown that developed standard methods are robust and reliable across diverse product compositions, but possible interferences and unexpected results when analysing fertilizing product blends are possible.

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prEN 18318 Viešoji apklausa

Komentavimo iki data 2026-05-05

Organinės-mineralinės trąšos. Tam tikrų inhibitorių nustatymas

This document specifies references to the methods for the determination of urease inhibiting compounds in organo-mineral fertilizers. This document is applicable to fertilizing product blends where the blend is a mix of at least two of the following components: organic fertilizers and inorganic fertilizers to which urease inhibitors have been added. This document is not applicable to fertilizing product blends containing liming materials, soil conditioners, growing media or biostimulants.

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prEN 18319 Viešoji apklausa

Komentavimo iki data 2026-05-05

Trąšos, kalkinimo medžiagos ir inhibitoriai. Fosfonatų kiekio nustatymas jonų chromatografija su laidumo aptikimu (IC-CD)

This document specifies a method for the extraction and determination of phosphonates (P-PO3) in fertilizers, liming materials and inhibitors using ion chromatography and conductivity detection (IC-CD). This document is applicable to fertilizing product blends, where the blend is a mix of at least two of the following components, fertilizers, liming materials, soil improvers, growing media, inhibitors and plant biostimulants, and where the following category, fertilizers, liming materials and inhibitors, is the highest % in the blend by mass or volume, or in the case of liquid form, by dry mass. If fertilizers, liming materials and inhibitors is not the highest % in the blend, the European Standard for the highest % of the blend applies. In case a fertilizing product blend is composed of components in equal quantity, the user decides which standard to apply. NOTE Variations in analytical methods for fertilizing product blends can lead to differing results as some components or matrix interactions can affect the outcome. Validation procedures have shown that developed standard methods are robust and reliable across diverse product compositions, but possible interferences and unexpected results when analysing fertilizing product blends are possible.

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prEN ISO 22523 Viešoji apklausa

Komentavimo iki data 2026-05-05

Išoriniai galūnių protezai ir išoriniai įtvarai. Reikalavimai ir bandymo metodai (ISO/DIS 22523:2026)

This document specifies requirements and test methods for external limb prostheses and external orthoses, including the following classifications from ISO 9999: 06 03 - 06 15 Orthoses 06 18 - 06 27 Limb prostheses It covers strength, materials, restrictions on use, risk and the provision of information associated with the normal conditions of use of both components and assemblies of components. This document is also applicable as a guide in the design and test of custom build orthosis and prosthesis. NOTE The application of Quality Systems as described or referred to in ISO 13485 and ISO 13488 can be appropriate.

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prEN ISO 27917 Viešoji apklausa

Komentavimo iki data 2026-04-30

Anglies dioksido surinkimas, transportavimas ir saugojimas. Aiškinamasis žodynas. Bendrieji terminai (ISO/DIS 27917:2026)

This document defines a list of cross-cutting terms commonly used in the field of carbon dioxide capture, transportation and geological sub-surface storage including through storage in association with enhanced oil recovery (EOR) operations. This document only deals with CO2 geological sub-surface storage. The terms are classified as follows: — general terms and definitions relating to carbon dioxide; — general terms and definitions relating to carbon dioxide capture, transportation and storage; — general terms and definitions relating to monitoring and measuring performance in carbon dioxide capture, transportation and geological storage; — general terms and definitions relating to risk; — general terms and definitions relating to relationships with stakeholders; A list of the main acronyms used is given in Annex A.

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prEN ISO 20899 Viešoji apklausa

Komentavimo iki data 2026-05-02

Vandens kokybė. Plutonis ir neptūnis. Bandymas ICP-MS metodu (ISO/DIS 20899:2026)

This document specifies methods to determine the 239Pu, 240Pu, 241Pu and 237Np by inductively coupled plasma mass spectrometry (ICP-MS). The mass concentrations obtained can be converted into activity concentrations. Due to its relatively short half-life and 238U isobaric interference, 238Pu can hardly be measured by this method. To quantify 238Pu isotope by mass spectrometry, other techniques can be used (ICP-MS with collision-reaction cell, ICP-MS/MS with collision-reaction cell or chemical separation). Alpha spectrometry measurement, as described in ISO 13167,[8] is currently used[9]. The method is applicable to test samples of supply/drinking water, rainwater, surface and ground water, marine water, as well as cooling water, industrial water, domestic, and industrial wastewater after proper sampling and handling, and test sample preparation. A chemical separation of Np and Pu, with quantitative removal of all other elements (including uranium, americium, etc.) is mandatory, given all the potential interferences that may bias the measurement or lead to false positives. Chemical separations can eliminate most of the 238U. However, use of reagents, glassware, and atmosphere for the chemical separation, will also add 238U to the samples and prevent measurement of 238Pu. The limit of detection depends on the sample volume, the instrument used, the background count rate, the detection efficiency, the counting time, and the chemical yield. The detection limit of the method described in this document, using currently available ICP-MS apparatus, is approximately 1 mBq·l-1 for 239Pu, 240Pu, 237Np and 1 Bq·l-1 for 241Pu, which is lower or of the same order of magnitude than the WHO criteria for safe consumption of drinking water (1 mBq·l-1 for 239Pu, 240Pu, 237Np and 10 Bq·l-1 for 241Pu[4]).This method covers the measurement of those radionuclides in water at activity concentrations between approximately[10][11]: — 1 mBq·l−1 to 5 Bq·l−1 for 239Pu, 240Pu and 237Np; — 1 Bq·l−1 to 5 Bq·l−1 for 241Pu. Samples with higher activity concentrations than 5 Bq·l−1 can be measured if a dilution is performed. The higher is the concentration factor, the lower are the LD and LQ expressed in Bq/L of water. A preconcentration is especially useful for the quantification of 241Pu that is usually the less abundant isotope of plutonium. The method described in this document is applicable in the event of an emergency situation. Filtration of the test sample is necessary. The analysis of 239Pu, 240Pu, 241Pu and 237Np adsorbed to suspended matter is not covered by this method. The analysis of the insoluble fraction requires a mineralization step that is not covered by this document. In this case, the measurement is performed separately on each phase or the total phase. It is the user’s responsibility to ensure the validity of this test method for the water samples tested.

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prEN ISO 21227-1 Viešoji apklausa

Komentavimo iki data 2026-04-30

Dažai ir lakai. Padengto paviršiaus defektų įvertinimas naudojant skaitmeninį vaizdų apdorojimą. 1 dalis. Bendrieji nurodymai (ISO/DIS 21227-1:2026)

ISO 21227-1:2003 gives definitions for and provides guidance in the use of optical imaging systems for the quantitative characterization of defects on coated surfaces that occur after exposure in various test methods, e.g. stone chipping, weathering or cross-cut testing. One aim of ISO 21227 is to use optical imaging to reproduce the results of already existing methods for visual assessment. Additionally, optical imaging provides further information which can be used for a more detailed evaluation of coating defects. This part of ISO 21227 contains a general introduction in optical-imaging methods and definitions. The performance of individual test methods and requirements for precision are described in other parts of the standard.

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prEN ISO 25178-6 Viešoji apklausa

Komentavimo iki data 2026-04-30

Geometrinės gaminio specifikacijos (GGS). Plotinė paviršiaus tekstūra. 6 dalis. Paviršiaus tekstūros matavimo metodų topografija (ISO/DIS 25178-6:2026)

ISO 25178-6:2010 describes a classification system for methods used primarily for the measurement of surface texture. It defines three classes of methods, illustrates the relationships between the classes, and briefly describes specific methods.

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prEN 15189 Viešoji apklausa

Komentavimo iki data 2026-04-30

Stipriojo ketaus vamzdžiai, jungiamosios detalės ir pagalbiniai reikmenys. Išorinės poliuretaninės vamzdžių dangos. Reikalavimai ir bandymo metodai

This document specifies the requirements and test methods applicable to factory applied external polyurethane based coatings for heavy duty (see EN 545:2010, Clause D.3) corrosion protection of buried ductile iron pipes in accordance with EN 545, EN 598 and EN 969 for use at operating temperatures up to 50 °C. This document is not applicable to ductile iron pipes protected with zinc with a finishing layer of polyurethane. This document is not applicable to special activities on site such as tapping, clamping, etc., which could affect the corrosion protection properties of the polyurethane coating. NOTE These operations are usually specified in the laying instructions supplied by manufacturers of clamps, house connection saddles, etc. and any relevant user procedures.

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EN ISO 10156:2017/prA1 Viešoji apklausa

Komentavimo iki data 2026-04-30

Dujų balionai. Dujos ir dujų mišiniai. Užsiliepsnojimo potencialo ir oksidacijos gebos nustatymas, skirtas balionų čiaupų atvamzdžiams parinkti. 1 keitinys (ISO 10156:2017/DAM 1:2026)

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prEN ISO 3630-1 Viešoji apklausa

Komentavimo iki data 2026-04-30

Odontologija. Endodontiniai instrumentai. 1 dalis. Bendrieji reikalavimai (ISO/DIS 3630-1:2026)

This document specifies general requirements and test methods for endodontic instruments used for endodontic purposes, e.g. enlargers, compactors, accessory instruments, shaping and cleaning instruments, and a numeric coding system. In addition, it covers general size designations, color-coding, packaging, and identification symbols.

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prEN 18317 Viešoji apklausa