Karl Ring wrote:
> 
> Hello all
> 
> IPC Testmethod Number 2.3.25 (Date 2/88)  Resistivity of Solvent Extract
> seems to have an error.
> Nr. 2.3.25 requires 100ml of wash solutions for each 250mm2 of the board
> MIL-STD-2000A requires 1.55ml for each cm2 (also MIL-P-28809 10ml/in2)
> 
> i think IPC should reqire 100ml at 6451.6mm2
> Is this correct?
> 
> Karl Ring
> ZVE - Germany
> 
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Karl,

You are correct, there is an error in the conversion from English to Metric.  It is 
my understanding that the Ionic Conductivity Task Group of the IPC is revising this 
method and we will make sure that the conversions are correct for this new revision. 
 Thank you for pointing this out.

Brian McCrory
Chairman, IPC Testing Committee

cc Susan Mansilla
Chair, Test Methods Subcommittee


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