Phosphoric acid for industrial use — Determination of iron content — 2,2'- Bipyridyl spectropho...
Applicable to products having Fe contents of more than 0.001 % (m/m). Preliminary hydrolysis of polyphophate acids by prolonged boiling in the presence of hydrochloric acid. Reduction of iron(III) by means of hydroxylammonium chloride. Formation of the iron(II)-2,2'-dipyridyl complex in the presence of ammonium acetate at pH of 3.1 and a temperature of 75 °C (under the test conditions the…
Rating systems for electronic tubes and valves and analogous semiconductor devices
Describes rating systems in use for electronic tubes and analogous semiconductor devices. Its object is to bring about a greater understanding of these systems, especially in the division of responsibility between the manufacturer and the circuit designer.
Particulate air filters for general ventilation — Determination of the filtration performance
ISO 21220:2008 refers to particulate air filters for general ventilation. It describes testing methods and the test rig for measuring filter performance. The test rig is designed for an air flow rate between 0,25 m3/s (900 m3/h, 530 ft3/min) and 1,5 m3/s (5 400 m3/h, 3 178 ft3/min).
ISO 21220:2008 applies to air filters having an initial efficiency of less than 99 % with respect to 0,4 �m…
Information security, cybersecurity and privacy protection — Evaluation criteria for IT security — P...
This document establishes the general concepts and principles of IT security evaluation and specifies the general model of evaluation given by various parts of the standard which in its entirety is meant to be used as the basis for evaluation of security properties of IT products.
This document provides an overview of all parts of the ISO/IEC 15408 series. It describes the various parts of the…
Green coffee — Determination of loss in mass at 105 °C
ISO 6673 specifies a method for the determination of the loss in mass at 105 °C of green coffee.
It is applicable to decaffeinated and non-decaffeinated green coffee as defined in ISO 3509.
This method of determining the loss in mass can be considered, by convention, as a method for determining the water content and can be used as such by agreement between the interested parties, but it gives…
This [proposed] standard is for anybody who creates or helps create scientific documents intended for diverse audiences. It builds, and relies, on the foundation for plain language in ISO/DIS 24495-1, Plain Language — Part 1: Governing Principles and Guidelines. It does not repeat the guidance in Part 1. Rather, it adds guidance and techniques to help authors make sure that readers or users of…
Ventilation systems for nuclear facilities — In-situ efficiency test methods for iodine traps with s...
The standard ISO 16659-1 is the general part of a set of standards on the different in-situ test methods for iodine traps, describing common general provisions applicable to all methods.
The current standard ISO 16659-2 presents the in-situ testing method for measuring the efficiency of iodine traps using a radioactive methyl iodine method (CH3I). This standard present the specific provisions…
Guidelines for implementation of statistical process control (SPC) — Part 1: Statistical Process Man...
Statistical process control (SPC) concerns the use of statistical techniques and statistical or stochastic control algorithms to achieve one or more of the following objectives:
a) to increase knowledge about a process;
b) to steer a process to behave in the desired way;
c) to reduce variation of final-product parameters, or in other ways to improve performance of a process.
These…
