Cyclic Salt Spray Tester for Material Weather Resistance Test, Sprayed Workpieces & Outdoor Metal

A factory received a customer complaint about rust on a coated metal part after only six months in service. The quality team investigated but found nothing wrong—the coating thickness was within spec, adhesion passed, visual inspection looked fine. Frustrated, the plant manager finally bought a BOTO GROUP salt spray chamber. He took samples from the same production batch and ran a 1,000-hour test. At 350 hours, the coating began to blister along the edges. At 500 hours, rust was visible. The lab report pointed to a contaminated pretreatment bath—something no visual inspection could have caught. They traced the contamination to a new cleaning chemical from a supplier who had quietly changed their formula. The factory switched back, retested, and passed. They sent the test report to the complaining customer, along with a corrective action plan. The customer not only stayed but increased their order. “I used to think testing was just for certifications,” the plant manager said. “Now I know it’s for finding the problems your eyes can’t see.” At BOTO GROUP, we build salt spray chambers for manufacturers who’d rather discover the truth early than apologize for it later.