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Singapore Standards Package/Series ISO IEC

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ISO 18135:2017 [Current]

Solid Biofuels — Sampling

...ss than 10, it shall be set to n min = 10 unless agreed upon otherwise; V i is the primary increment variance; P L is the overall precision for the sampling, sample preparation and testing for the whole biofuel lot at 95 % confidence level; V PT...
...Parties should be aware of the possibility that extracting increments of extreme content will influence the final measured value...
...This is especially possible for materials that segregate where fines concentrate at certain regions of the bulk such as the centre...

ISO 18192-1:2011 [Current]

Implants for surgery — Wear of total intervertebral spinal disc prostheses — Part 1: Loading and displacement parameters for wear testing and corresponding environmental conditions for test

...Daily living activities are assumed to cover a certain percentage of the maximum range of motion with single events of higher loads and motions...
...Nevertheless, the user should consider running tests at maximum loads and deflections, such as migration tests, impingement tests and fatigue tests...
...sses the reference position (no deflection in either direction); there are two stopping points within one cycle with no relative motion between the components; NOTE The stopping points can affect the wear characteristics of certain material combina...

ISO 18207:2006 [Current]

Road vehicles — Trailers up to 3,5 t — Control of welded towing brackets for coupling ball after fatigue testing

ISO 182-1:1990 [Current]

Plastics — Determination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures — Part 1: Congo red method

ISO 18213-4:2008 [Current]

Nuclear fuel technology — Tank calibration and volume determination for nuclear materials accountancy — Part 4: Accurate determination of liquid height in accountancy tanks equipped with dip tubes, slow bubbling rate

...ISO 18213-4:2008(E) ISO 2008 All rights reserved 9 The differential pressure, P 1 , is measured by a manometer located at some elevation, E 1 , above the tip of the major probe...
...As noted in Clause 2, various factors can affect the accuracy of the calculation for determining height from pressure based on Equation (1)...
...Therefore, measurements of differential pressure shall be adjusted to compensate for variations in ambient conditions during the measurement period before they can be converted into accurate measures of liquid height...

ISO 18213-5:2008 [Current]

Nuclear fuel technology — Tank calibration and volume determination for nuclear materials accountancy — Part 5: Accurate determination of liquid height in accountancy tanks equipped with dip tubes, fast bubbling rate

...If some liquid other than water is used for calibration, then its density must be determined with suitable accuracy at all measurement temperatures before Equation (1) (see Clause 4) can be successfully applied...
...Likewise, the use of Equation (8) to determine the height of some process liquid in the tank requires an accurate measure of its density at the measurement temperature...
...3 Density of gas in the pressure lines A...

ISO 182-2:1990 [Current]

Plastics — Determination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures — Part 2: pH method

ISO 182-3:2023 [Current]

Plastics — Determination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures — Part 3: Conductometric method

ISO 182-4:1993 [Current]

Plastics — Determination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures — Part 4: Potentiometric method

...ISO 182=4:1993(E) Electrode specific for Cl- ions Tacussel Type XS 200 Number 475670 Reference electrode TR 200 (mercurous sulfate); salt bridge filled with 0,l Ml) KNO, ; support electrolyte 0,l Ml) KNO, ; pH = 3...

ISO 18249:2015 [Current]

Non-destructive testing — Acoustic emission testing — Specific methodology and general evaluation criteria for testing of fibre-reinforced polymers

...ISO 18249:2015(E) Usually for pressure vessels, hydraulic tests are recommended...
...if normal service loads include either a superposed gas pressure or gas pressure only...
...Due to the Felicity effect, when the test load is not sufficiently higher than the previous maximum in- service load, the operating conditions for structures that have been stressed previously shall be reduced prior to AT...

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