Table 1 major test conditions

3.   A post-mortem of the preparation: drug-test sodium chloride solution(¹) in distilled water (or less than total dissolved solids in the water below 200 ppm), the deployment of a concentration of 5 ± 1% of the test solution(²). This test in the 350 C spray, its pH value of the collection should be 6.5 to 7.2(³). And the spray, test solution containing suspended solids can not(⁴).
Notes: (¹) can not contain sodium chloride copper-nickel impurities, solids content of sodium iodide to be less than 0.1%. Because the impurity may contain corrosion inhibitors, the impurity content to be less than 0.3%.
(²): 33 ~ 350 C measurement of the proportion of this test should be 1.0258 ~ 1.0402, measured at 250 C for measuring the proportion of 1.0292 to 1.0443. This test can also make use of the concentration of silver nitrate solution or other titration method calibration.
(³): Test Solution required to test drugs dilute hydrochloric acid or sodium hydroxide solution adjust pH, and at pH instrument or other reliable methods of measurement. The preparation of test preparation test of the presence of carbon dioxide in the water, the solubility of carbon dioxide in the water with temperature changes affect the pH value of solution, it must carefully control the pH. PH value can enjoy one of the following methods adjustments:
(1) preparation of test liquid at room temperature, 350 C spray, because the increase of temperature而使part of the increase of carbon dioxide emission solution pH. Test preparation is liquid at room temperature, pH value should be adjusted in 6.5, it will enable the collection of the pH value between 6.5 to 7.2.
(2) pH adjustment before the first test of cold boiled again to 350 C, or maintain the temperature at 350 C for 48 hours. So adjust the pH of the spray at 350 C, will not produce much change.
(3) The first water heated to 350 C and above, in order to remove dissolved carbon dioxide, and then liquid and adjust the modulation test pH. 350 C spray in the case, the pH value of the adjustment will not have much change.
(⁴): To avoid spray nozzle blockage, the pilot or liquid to be filtered carefully tilt Note salt buckets of water or spray installed on the front glass filters suitable or appropriate gauze.

4.   Preparation: the equipment required to test spray nozzle, salt buckets, test-support planes, spray collection containers, laboratories (5), brine supply barrels, pressure drums, the compressed air supply equipment posed by, device as shown in Figure 1, and in accordance with the following conditions trial.
Note (5): laboratory size, should be more than 0.43 m3. 
         4.1    salt spray test machine with the necessary pipeline blunt materials should be used, the spray can affect the corrosion test, or to be corrosion
         4.2    mouth of the direct spray liquid Fenxiang sample will be tested, the top gathering room spray solution may not drop in on-chip test.  
         4.3    Dixia the pilot test of the return of the salt buckets, and again for the trial.  
         4.4    compressed air can contain grease and dust, and therefore we have to clean-air. Air pressure should be kept at 1.00 ± 0.01kgf/cm2 because compressed air in the expansion, there were endothermic phenomenon, it must be preceded by a preheating (6), such as Schedule 1 to obtain homogeneous temperature spray Note (6 ): preheating to increase the compressed air temperature and humidity.
         4.5    Spray taken to the level of their area of 80 cm2, a diameter of 10 cm, placed in the vicinity of test specimens (near the nozzle and the farthest in the last two places).
         4.6    fluid to spray the entire time, taking on the containers, the average hourly collection can be from 1.0 to 2.0 ml of salt solution. Spray should collect at least 16 hours, said its average volume spray.
         4.7    Test salt buckets, NaCl concentration should be maintained from 40 to 60 g / L, respectively.
         4.8    barrels of pressure on the temperature should be kept at 47 ± 10C, salt buckets temperature of 35 ± 10C.
         4.9    laboratories relative humidity should be kept at more than 85 percent, higher relative humidity of the requirements of the agreement by the buyer and seller.

5. Sample
         5.1   to take place: the sample from the surface of the main products to their own products or as a specimen. However, if unable to determine when the test or products may be mutually agreed between the parties concerned instead of a pilot film. The test specimens must be able to represent the products.
         5.2   scale: The size of the standard-150 X70 mm, or 100 X65mm.
         5.3   number: the number of samples by the seller and the buyer agreement.
         5.4   pre-treatment test 
             5.4.1 sample according to the nature of the coating and cleaning the extent appropriate cleaning to be done, can not be used Varnish (7) and the inhibition of corrosion or cleaning solvents, and cleaning method should not damage the surface. As for the stainless steel sample can be used by agreement of the sale of nitric acid cleaning and passivation. After the clean sample (through the aqueous test) to a clean cloth or absorbent paper will be wiped away moisture, or oil-free dry air dryer.
Note(7):last resort, the use of magnesium oxide paste. This paste is 10 g of the drug-test by adding 100 mL of magnesium in the water.
             5.4.2 If states otherwise sample incision and hooks caused by exposing part of the substrate, or identification marks of subsidence caused by the coating, should be reviewed in an appropriate test of the protective layer. If hard wax (ceresin wax), ethylene, such as insulation tape.
             5.4.3 hand profiling pollution will cause serious adverse results of the trial, after the sample was clean hands profiling without any pollution.

6. The kind of place: test, test samples of indoor location to comply with the following conditions:
       6.1 The main sample surface and plumb line into 15 degrees to 30 degrees of tilt, and the laboratory should be above and spray overlooking the main flow direction parallel. There are many special parts of the main direction of the surface need to test, the sample placed more than desirable, ensuring that each of the major surface can also accept saline spray.
       6.2 f the sample order, should be charged to spray free to all specimens, the spray should not prevent the free fall condensate.
       6.3 contact between the sample not, and do not come into contact with metallic conductors or capillary phenomenon role of the material, as well as other outside-the support of.
       6.4 salt solution not from a trickle to other samples on the sample.
Specimen identification
       6.5 hole assembly should be reviewed below.

7. Operation: laboratory and brine temperature adjusted to 35 degrees Celsius, the temperature pressure barrels to 47 degrees, spray pressure maintained at 1.00 ± 0.01kgf/cm2, to start spraying. 
       7.1 Test conditions: experimental conditions such as Table 1.
       7.2 Test time: since the beginning to end of the spray consecutive time. Test time for plating an important quality of the information, the time required for the agreement to both buyers and sellers.
       7.3 Test after treatment: spray test completed, the laboratory opened shelters,勿使solution Dixia carefully removed and the sample, not the major surface damage as soon as possible to 380 C lower than the adhesion of salt water washed away by brush or sponge to remove corrosion products, and immediately to clean the compressed air drying

8.Record: If not otherwise agreed by both parties, otherwise, the pilot should have the following in mind that the Green (Schedule 2 of the log sheet for reference)
       8.1 Preparation brine, and by the use of salt water quality.
       8.2 test temperature records.
       8.3  The spray to devices, such as the following day should be recorded:
            8.3.1 spray volume 
            8.3.2 collection solution at room temperature, or the proportion of concentration.
            8.3.3 collection solution pH.  
       8.4 specimen type, shape, size and number.
       8.5 of the sample pre-treatment and post-treatment cleaning cleaning method.
       8.6 in the test sample indoor placement.  
       8.7 pursuant to section 5.4.2 of the coating method used.
       8.8 Spray time. 
       8.9 Test time if interrupted, must be recorded and the reasons for the interruption time.
       8.10 by the results of other tests