The answer depends on the cleaning / defluxing method.
There are many fine chemicals available. One must first consider the cleaning method, then safety (environment and operator), then cost.
For automated board cleaners (defluxers), consider the following chemicals:
Vitrex AT200 (ours) Vitrex CA (ours... for use in California where low VOC's are mandated) Kyzen 4520 Kyzen 4630
For manual (spray can) defluxing: Check out Microcare products
For ultrasonic stencil cleaners: Simple Green Stencil Cleaner (ours) Kyzen A4520 Petroferm Hydrex A-Plus SmartSonic 440R
For manual stencil cleaning applications: Simple Green Stencil Cleaner (ours) SmartSonic 440R
Mike Konrad Aqueous Technologies konrad@aqueoustech.com
www.aqueoustech.com
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