Transcription of IPC-TM-650 Ionic Conductivity / Ion …
{{id}} {{{paragraph}}}
Example: biology
IPC-TM-650 Ionic Conductivity / Ion …
1 PurposeThese tests are used as process controltools; they can be used to inspect printed boards or printedboard assemblies and determine if they conform to the moni-toring level of the user s performance specification. Bulk ioniccleanliness testing may be accomplished by measuring theionizable surface contaminants extracted by the followingthree methods:1. Manual extraction method2. Dynamic extraction method3. Static extraction methodNote:Please note that this method does not predict reliabil-ity and should only be used as a process control RestrictionsMeasurements of Ionic conductivities donot differentiate between different Ionic species. They simplymeasure conductivities (or resistivities) which can be related toamounts of Ionic materials present in solution. There is noidentification of the contribution to the total Conductivity read-ings of any individual Ionic species which may be extractedinto the solution.
4.4 Test Procedure 4.4.1 Carefully preclean all plasticware with deionized water (16 MΩ-cm resistivity minimum) followed by a final rinse with the extraction test solution. 4.4.2 Determine the surface area per Section 3. 4.4.3 Suspend the test specimen within an appropriately sized funnel positioned over a graduated cylinder.
Loading..
Tags:
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document: