Textile glass — Rovings — Basis for a specification
Is intended to serve as a guide for the establishment of technical specifications for products of given type. Rovings are divided in two main groups: - rovings that are chopped during subsequent operations - rovings that are utilized without being chopped The following particulars are mentioned and the relevant International Standards are quoted: Designation, type of glass, filament diameter,…
Butadiene for industrial use — Determination of oligomers — Gas chromatographic method
A liquid or a vaporized gaseous test portion is injected into a gas chromatography column. After passage of the test portion through this column the oligomers are separated. The detection is performed by flame ionization. The peaks obtained are compared with those derived from an external standard. The oligomers which may be present are: 4-vinyl cyclohexene, 1,3-cyclooctadiene, 1,5-cyclooctadiene…
Rubber — Determination of rebound resilience of vulcanizates
Describes a method for a narrow range of impact strain and strain rate, by means of any form of impacting and measuring apparatus conforming to the requirements described in the standard. Method is applicable to vulcanized rubbers, the hardness of which, at the test temperature, lies betwen 30 and 85 IRHD. Annes A refers to non-standard test pieces and contains a table for recommended fundamental…
This standard applies to silvered mirrors of polished plate, float or sheet
glass. Classification according to end use provides for normal, high humidity
and wardrobe door applications.
1. Scope
1.1 This Standard applies to manually operated and mechanically operated special use switches that are:
(a) for use on dc, ac/dc or ac only; and
(b) rated for not more than
(i) 60A at 250V or less; or
(ii) 30A or 2hp at 600V or less.
1.2 This Standard does not apply to
(a) switches forming parts either of electrothermal appliances or automatic temperature-responsive switches;
(b)…
1. Scope and Purpose
1.1
This Standard applies to the design, installation, operation, and maintenance
of those portions of a hospital electrical system in which the interruption of
the normal supply would jeopardize the effective and safe care of its patients,
the safety of hospital staff, and the public.
1.2
This Standard includes requirements for the installation of a hospital…
Chemical products for industrial use — Sampling techniques — Solid chemical products in the form of ...
From the lot to be sampled a certain number of increments is taken. The increments are mixed to form either a bulk sample or several primary samples, depending on the purposes of the sampling. By means of replicate reductions a reduced sample is prepared from the bulk sample or from each primary sample, then several laboratory samples, each stage of the division being preceded in each case by…
Soils - Moisture-Density Relations Modified Proctor Test
The present standard describes the method to determine the relation between the
moisture content and the density of soils and soil aggregates when these are
compacted in standard moulds using 4,54 kg rammers dropped a height of 457 mm.
Four methods are described herein.
NOTE 1 - The laboratory compaction tests described in this standard generally
provide good measures of optimum moisture…
