Rubber seals — Joint rings used for gas supply pipes and fittings — Specification for material
Specification refers to operating temperatures up to 50 °C. Other requirements, particularly functional tests for the actual sealing materials, shall be specified in national standards. Applicable to joint rings for all pipeline materials including iron, steel, copper, plastics. The standard does not include joint rings made from cellular rubbers or with enclosed voids. 2 tables with general and…
Cinematography — Motion-picture camera cartridge, 8 mm type S, model 1 — Camera run length, perforat...
This International Standard gives specifications for the Camera run length, Perforation Cut-out notch, and end-of-run notch in film supplied in
- 8 mm type S model I motion-picture film Camera cartridges of 15 m (50 ft) and 60 m (200 ft) nominal capacity;
- and 8 mm type S model I Sound motion-picture film Camera cartridges of 15 m (50 ft) and 60 m (200 ft) nominal capacity.
lt also gives…
Vitreous and porcelain enamelled manufactured articles — Determination of resistance to heat
The method described is applicable to enamelled articles that will, in service, be subjected to high temperature. Supplementary information on test temperature, test of heating, temperature measuring points, rate of temperature increase, duration of maintaining the test temperature, number of single heating and cooling tests and damage criteria of the evaluation the enamel finishes shall be…
Prints — Preparation of standard prints for optical tests
Is in technical conformity with CEI specification 14-74 of European Comittee of the Paints, Printing Inks and Artists' Inks Manufacturers' Associations. The standard prints are subjected to colorimetric optical density and brightness tests. This standard applies only to typographic and offset prints.
Phosphoric acid for industrial use (including foodstuffs) — Determination of hydrogen sulfide conten...
The hydrogen sulphide in a test portion is removed in a stream of nitrogen and absorbed in a solution of sodiumhydroxide in aqueous acetone. the sulphide ions are titrated with standard volumetric mercury(II) acetate solution, in the presence of 1,5-diphenylthiocarbazone (dithizone) as indicator. The method is applicable to products having hydrogen sulfide contents greater than or equal to 0.05…
Phosphoric acid for industrial use — Determination of higher soluble sulfate contents — Titrimetric ...
The sulphate present in a test portion is reduced to sulphide by a mixture of hydriodic and phosphinic (hypophosphorous) acids. The hydrogen sulphide evolved is absorbed in an excess of cadmium acetate solution. The cadmium sulphide formed is oxidized by an excess of standard volumetric potassium iodate/iodide solsution, and the excess iodine is titrated with standard volumetric sodium…
Essential oils — Determination of ester value of oils containing difficult-to-saponify esters
The method consists in hydrolysis of the esters present in a test portion by heating in the presence of a standard volumetric solution of potassium hydroxide in dimethylsulfoxide, and back-titration of the excess potassium hydroxide with a standard volumetric solution of sulfuric acid or hydrochloric acid.
Lays down the specification for products with metric dimensions and nominal shoulder diameters form 6,5 mm up to and including 25 mm; gives geometrical tolerances; includes specifications with reference to International Standards; gives an example for the designation.
1. SCOPE
1.1 This standard applies to back-pack fire extinguishers for use in
fighting forest, brush and grass fires. The extinguishers consist
essentially of a rigid or soft tank, shoulder straps, trombone pump,
hose and nozzle. Examples of the three types of back-pack
extinguishers covered in this standard are illustrated in Figure 1.
