Kemesta

Toimialayhteisö: Kemesta
Komitea: ISO/TC 45/SC 2 (Testing and analysis)
Alkuperä: ISO
Määräpäivä: 2018-04-30
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This document specifies a method for the determination of the apparent hardness of vulcanized- or thermoplastic-rubber roller covers, expressed in Shore hardness, for measurement where only medium precision is required. The method and apparatus used are essentially those described in ISO 48-4, the measurements in this case being made on the curved surface of the conditioned rubber-covered roller rather than on a flat test piece. Shore type A and type D instruments are specified, the latter being used for measurements on rollers of high hardness.
Toimialayhteisö: Kemesta
Komitea: ISO/TC 31/SC 5 (Agricultural tyres and rims)
Alkuperä: ISO
Määräpäivä: 2018-04-30
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This document specifies the method for measuring rolling circumference for new tyres, under loaded conditions, made for use on agricultural tractors and machines, and applies to agricultural tractor drive wheel tyres in diagonal and radial construction. It also includes an explanation of the rolling circumference index (RCI) and speed radius index (SRI).
Toimialayhteisö: Kemesta
Komitea: ISO/TC 61/SC 5 (Physical-chemical properties)
Alkuperä: ISO
Määräpäivä: 2018-04-30
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This document specifies a method for the determination of the penetration temperature of thermoplastics using thermomechanical analysis.
Toimialayhteisö: Kemesta
Komitea: ISO/TC 45/SC 3 (Raw materials (including latex) for use in the rubber industry)
Alkuperä: ISO
Määräpäivä: 2018-04-30
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This document specifies a method for the determination of the KOH number of natural rubber latex concentrate which is preserved wholly or in part with ammonia. The method is applicable to latices containing boric acid. The method is not applicable to latices preserved with potassium hydroxide. It is not necessarily suitable for latices from natural sources other than Hevea brasiliensis, or for latices of synthetic rubber, compounded latex, vulcanized latex or artificial dispersions of rubber.
Toimialayhteisö: Kemesta
Komitea: CEN/TC 23 (Transportable gas cylinders)
Alkuperä: CEN
Määräpäivä: 2018-04-30
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This International Standard specifies the requirements for design, manufacture and testing of cylinders, tubes, and other pressure vessels of steel, stainless steel, aluminium alloys or of non-metallic construction material intended for the stationary storage of gaseous hydrogen of up to a maximum water capacity of 10 000 l and a maximum allowable working pressure not exceeding 110 MPa, of seamless metallic construction (Type 1) or of composite construction (Types 2, 3 and 4) without any non-seamless load sharing metallic components, hereafter referred to as pressure vessels.For Existing design already qualified for other applications (e.g. transportable applications) follow the requirements of Annex E.This International Standard is not intended as a specification for pressure vessels used for solid, liquid hydrogen or hybrid cryogenic-high pressure hydrogen storage applications.
Toimialayhteisö: Kemesta
Komitea: ISO/TC 256 (Pigments, dyestuffs and extenders)
Alkuperä: ISO
Määräpäivä: 2018-04-30
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This part of ISO 787 specifies a method for determining the total contents of polychlorinated biphenyls (PCBs), checking for all 209 possible congeners in pigment materials. The use of such solid surface extraction methods risks underestimating the actual content by orders of magnitude. Such errors are often further enhanced when the PCBs quantitation is carried out by using external or internal reference materials which do not undergo the same losses as the analytes that are occluded in the crystal lattice of the pigment. Furthermore, Aroclor® or Clophen® mixes may not be used as reference materials as most PCB congeners therein are not related to pigment chemistry[5,7,8]. Lower quantitation limit: 1 mg/kg Working range: 1 mg/kg to 150 mg/kg
Toimialayhteisö: Kemesta
Komitea: ISO/TC 217 (Cosmetics)
Alkuperä: ISO
Määräpäivä: 2018-04-30
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Toimialayhteisö: Kemesta
Komitea: CEN/TC 392 (Cosmetics)
Alkuperä: CEN
Määräpäivä: 2018-04-30
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Toimialayhteisö: Kemesta
Komitea: ISO/TC 91 (Surface active agents)
Alkuperä: ISO
Määräpäivä: 2018-04-30
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Toimialayhteisö: Kemesta
Komitea: CEN/TC 137 (Assessment of workplace exposure to chemical and biological agents)
Alkuperä: CEN
Määräpäivä: 2018-05-07
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This European Standard provides guidelines to assess workplace exposure by inhalation of nano-objects and their aggregates and agglomerates (NOAA). It contains guidance on the sampling and measurement strategies to adopt and methods for data evaluation.While the focus of this document is on the assessment of nano-objects, the approach is also applicable for exposure to the associated aggregates and agglomerates, i.e. NOAA, and particles released from nanocomposites and nano-enabled products.
Toimialayhteisö: Kemesta
Komitea: CEN/TC 260 (Fertilizers and liming materials)
Alkuperä: CEN
Määräpäivä: 2018-05-07
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This document specifies a method for the determination of nitrification inhibitor 2-(3,4-dimethyl-pyrazol-1-yl)-succinic acid (DMPSA) using high-performance liquid chromatography (HPLC), which is applicable to all mineral fertilizers.
Toimialayhteisö: Kemesta
Komitea: ISO/TC 61/SC 5 (Physical-chemical properties)
Alkuperä: ISO
Määräpäivä: 2018-05-07
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This International Standard specifies a general method for determining the average molecular mass and molecular mass distribution of polymers (see Reference[1]) from 2 000 g · mol-1 to 20 000 g · mol-1 by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS). The average molecular masses and molecular mass distributions are calculated from a calibration curve constructed using synthetic-polymer and/or biopolymer standards. This method is therefore classified as a relative method. The method is not applicable to polyolefins or to polymers with a polydispersity > 1,2.
Toimialayhteisö: Kemesta
Komitea: CEN/TC 207 (Furniture)
Alkuperä: CEN
Määräpäivä: 2018-05-14
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This European Standard specifies test methods and requirements for the determination of the stability of all types of seating for adults weighing up to 110 kg, without regard to use, materials, design/construction or manufacturing process.The test methods described can be used for seating for children and heavier adults by modifying test loads and loading points.This European Standard does not apply to children’s highchairs, table mounted chairs and bath seats which are covered by other European Standards.
Toimialayhteisö: Kemesta
Komitea: ISO/TC 45/SC 2 (Testing and analysis)
Alkuperä: ISO
Määräpäivä: 2018-05-14
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This document specifies a dead-load method for the determination of the hardness of very soft vulcanized or thermoplastic rubbers using the very low rubber hardness (VLRH) scale. The relation between the depth of penetration and the VLRH scale is linear.
Toimialayhteisö: Kemesta
Komitea: ISO/TC 45/SC 2 (Testing and analysis)
Alkuperä: ISO
Määräpäivä: 2018-05-14
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This document specifies a method for determining the indentation hardness (Shore hardness) of vulcanized or thermoplastic rubber using durometers with the following scales:
Toimialayhteisö: Kemesta
Komitea: ISO/TC 45/SC 2 (Testing and analysis)
Alkuperä: ISO
Määräpäivä: 2018-05-14
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This document specifies a method for determining the indentation hardness of vulcanized or thermoplastic rubber by means of a pocket hardness meter calibrated in IRHD. The use of such meters is primarily intended for control, not specification, purposes (for specification, see ISO 48-2). It is possible to increase precision by fixing the pocket hardness meter on a support.
Toimialayhteisö: Kemesta
Komitea: ISO/TC 45/SC 2 (Testing and analysis)
Alkuperä: ISO
Määräpäivä: 2018-05-14
LaajennaSupista
 
This document specifies a method for the determination of the apparent hardness, expressed in International Rubber Hardness Degrees (IRHD), of vulcanized- or thermoplastic-rubber roller covers. The method is similar in principle to the methods used for the determination of the hardness of rubber in ISO 48-2 in that it consists essentially of measuring the depth of penetration of a spherical indentor operating under a specified force. The apparatus used is similar to that described in ISO 48-2, having a base specifically designed for application to roller covers and similar curved surfaces.
Toimialayhteisö: Kemesta
Komitea: ISO/TC 31 (Tyres, rims and valves)
Alkuperä: ISO
Määräpäivä: 2018-05-14
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This document specifies methods for measuring rolling resistance, under controlled laboratory conditions, for new pneumatic tyres designed primarily for use on passenger cars, trucks and buses. This document is not applicable to tyres intended for temporary use only. It includes a method for correlating measurement results to allow inter-laboratory comparisons. It is designed to facilitate international cooperation and, possibly, regulation building. Measurement of tyres using this method enables comparisons to be made between the rolling resistance of new test tyres when they are free-rolling straight ahead, in a position perpendicular to the drum outer surface, and in steady-state conditions.
Toimialayhteisö: Kemesta
Komitea: ISO/TC 58/SC 3 (Cylinder design)
Alkuperä: ISO
Määräpäivä: 2018-05-14
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This International Standard ISO 17519 specifies the minimum requirements for the material, design construction and workmanship, manufacturing processes, examination and testing at time of manufacture of tubes This standard does not address tubes with pressure and volume (p x V) more than 3.000.000 bar l