Document ID: chunk:federal_register_of_legislation:F2019L00026:reg:80:p3
Version: federal_register_of_legislation:F2019L00026
Segment Type: reg
Provision Reference: reg 80 (pt 3/3)
Character Range: 180652–182393

prevent salt solution from one sample dripping on to any other sample.
              3. Salt solution
              3.1. The salt solution shall be prepared by dissolving 5 ± 1 parts by mass of sodium chloride in 95 parts of distilled water. The salt shall be sodium chloride substantially free of nickel and copper and containing on the dry basis not more than 0.1 per cent of sodium iodide and not more than 0.3 per cent of total impurities.
              3.2. The solution shall be such that when atomized at 35 °C the collected solution is in the pH range of 6.5 to 7.2.
              4. Air supply
               The compressed air supply to the nozzle or nozzles for atomizing the salt solution shall be free of oil and dirt, and maintained at a pressure between 70 kN/mP2P and 170 kN/mP2P.
              5. Conditions in the mist chamber
              5.1. The exposure zone of the mist chamber shall be maintained at 35 ± 5 °C. At least two clean mist collectors shall be placed within the exposure zone so that no drops of solution from the test samples or any other sources are collected. The collectors shall be placed near the test samples, one nearest to any nozzle and one furthest from all nozzles. The mist shall be such that for each 80 cm2 of horizontal collecting areas, there is collected in each collector from 1.0 to
              2.0 ml of solution per hour when measured over an average of at least 16 hours.
              5.2 The nozzle or nozzles shall be directed or baffled so that the spray does not impinge directly on test samples.

Annex 13

  Order of tests

Paragraphs                    Test                                                                   Samples
Belt or restraint system No.  Strap No.