Crude sodium borates for industrial use — Determination of total aluminium content — Titrimetric met...
Applicable to products having a total content up to 1 %. Is not applicable in the presence of zirconium or titanium. More than 0.006 % of iron will interfere in the determination. The principle bases on fusion of a test portion with sodium carbonate and extraction of the molten mass with hydrochloric acid. Formation of a complex by the addition of the disodium salt of ethylenediamintetra-ecetic…
The Standard specifies the following characteristics of the oil. Appearance: Clear liquid. Colour: Greenish-yellow. Odour: Resembling oil of sweet orange. Relative density at 20/20 °C: 0,852 - 0,860. Refractive index at 20 °C: 1,4740 - 1,4790. Optical rotation at 20 °C: Range from + 91 to + 96 . Carbonyl compounds content, expressed as decanal: Minimum 1,0 %. Residue on evaporation: 5,0 % - 10,0…
Specifies the main dimensions for the certain number of tool types, and the codified designation of dies and the marking. Details not indicated are left to the discretion of the manufacturers or should be specified in national standards. Includes, in annex A, a comparison of several dimensions for various types of drawing dies, and, in annex B, a terminology, in several languages, for…
The Standard specifies the following characteristics of the oil. Appearance: Mobile liquid. Colour: Pale yellow to brown. Odour: Spicy, resembling eugenol. Relative density at 20/20 °C: 1,027 - 1,048. Refractive index at 20 °C: 1,5250 - 1,5400. Optical rotation at 20 °C: Range from - 5 to 0 . Solubility in 70 % (V/V) ethanol at 20 °C: 1 : 2. Phenols content: Minimum 65 % (V/V).
Sodium chlorate for industrial use — Determination of chlorate content — Dichromate titrimetric meth...
Not applicable to the analysis of mixtures for agricultural use such as herbicides or pesticides. Indicates the risk in handling with clorates. Dissolution of the test portion in water and reduction by a known quantity, in access, of an iron(II) salt in a sulphuric acid and orthophosphoric acid medium. Titration of the excess iron(II) salt with a standard volumetric solution of potassium…
1.1
These requirements cover automatic and open sprinklers employed on sprinkler
systems used for fire-protection service. Requirements for the installation
and use of sprinklers are included in the Standard for the Installation of
Sprinkler Systems, NFPA No. 13.
1.2
Sprinklers are categorized as automatic or open, and by temperature rating,
orifice size, installation position, type of…
Marking Material, Retroreflective Enclosed Lens, Flexible Type
1. DEFINITION
1.1 This standard applies to a flexible enclosed element type of
retroreflective marking.
1.2 For detailed information on uses, see par. 8.2.
Methods for measuring the performance of electric ironing machines for household and similar purpose...
States and defines the principal performance characteristics of household electric irons of interest to the users and describes the standard methods for measuring these characteristics.
Acoustics — Standard tuning frequency (Standard musical pitch)
Specifies the frequency for the note A in the treble stave and shall be 440 Hz. Tuning and retuning shall be effected by instruments producing it within an accuracy of 0,5 Hz.
Specifies a method for determining the swelling properties of hard coal when heated under standard conditions in a dilatometer. In performing the method a pencil made of powdered coal formed under pressure is inserted into a precisely calibrated narrow tube and topped by a calibrated steel rod which slides in the bore of the tube. The whole is heated at a constant and definite rate. By making…
