The guidance specifies conditions required for good keeping of oranges, mandarins, lemons, grapefruits and limes with or without refrigeration. It includes conditions of harvesting and putting into store, and optimum conditions, such as temperature, relative humidity, air circulation and fresh air change. A table gives recommended temperatures according to varieties and areas of production.…
1. Scope
1.1 This Standard covers hollow building and facing brick made from clay, shale, fireclay, or mixtures thereof and burned for use in brick masonry.
1.2 This Standard excludes ceramic or other glazed brick. Brick to be treated with water-repellent materials must qualify under this Standard prior to such application. Note: For information regarding workmanship, see Appendix A.
Thermal Insulation, Urethane and Isocyanurate, Unfaced
1. Scope
1.1 This standard applies to rigid cellular urethane or isocyanurate
thermal insulation in the form of unfaced preformed boards primarily
intended for use in applications where the continuous use surface
temperature does not exceed 80°C for urethane and 110°C for
isocyanurate.
1.2 For more information on intended uses, see par. 8.4.
1. SCOPE
1.1 This standard applies to an alkyd-base primer for exterior use on wood
under alkyd house paints, enamels and latex paints.
1.2 For more detailed information on uses, see par. 7.2.
Sulphuric acid for industrial use — Determination of arsenic content — Silver diethyldithiocarbamate...
Describes a method applicable to products having aresenic contents equal to or greater than 0,1 mg/kg. As far as principle, the reagents and apparatus to be used are concerned, reference is made to ISO 2590, with some modifications added. For example, the reduction of arsenic by zinc is carried out in sulphuric acid medium. Provides information on the expression of results and the particulars to…
Hydrochloric acid for industrial use — Determination of arsenic content — Silver diethyldithiocarbam...
Describes a method applicable to products having arsenic contents equal to or greater than 0,2 mg/kg. As far as principle, reagents and apparatus to be used are concerned, reference is amde to ISO 2590. Provides information on the expression of results and the particular to be included in the test report. The annex lists ISO publications covering the same subject.
Ammonium sulphate for industrial use — Determination of arsenic content — Silver diethyldithiocarbam...
Describes a method applicable to products having arsenic contents euqal to or greater than 0,1 mg/kg. The principle consists in dissolving a test portion, acidifying it with hydrochloric acid solution and applying the general method as described in ISO 2590. Provides information on the expression of results and the particulars to be included in the test report. The annex lists ISO publications…
