What is the cost of the salt spray test and what is the standard?

Salt spray test

Corrosion is the destruction or deterioration of a material or its properties under the action of the environment. Most of the corrosion occurs in the atmospheric environment, and the atmosphere contains corrosion components and corrosion factors such as oxygen, humidity, temperature change and pollutants. Salt spray corrosion is a common and most damaging atmospheric corrosion. The corrosion of salt spray on the surface of metal materials is caused by the electrochemical reaction between the oxide layer and the protective layer and the inner metal of the metal surface. At the same time, chlorine ion can contain certain hydration, easy to be adsorbed on the surface of the metal, porosity, crack out and replace the oxygen oxidation layer, insoluble oxide into soluble chloride, make surface passivation state active surface.

Salt spray test standard:
ISO 7253-1996(paint)
BS 3900-f12-1997 (paint)
BS 7479:1991
IEC 60068-2 - then 60068
GB/T 10125-1997(paint)
GB 2423.17 2008
DIN 50021-1988
Acid salt spray test standard:
ASTM B368-09
ISO 9227-2006
DIN 50021-1988
BS 7479:1991
Copper ion accelerated salt spray test standard.
ASTM B368-09
ISO 9227-2006
DIN 50021-1988
BS 7479:1991
Cyclic salt spray test standard.
ASTM D6899-2003
ASTM G85-02 e1 Annex A5
ISO 11997-1:05
ISO 11997 - then
The SAE J2334:2002
WSK - M2G299
GM4298P
GM4476P
GM9540P

What is the cost of the salt spray test and what is the standard? Images