 
| Mime-Version: |
1.0 |
| Content-Type: |
TEXT/PLAIN; charset=US-ASCII |
| Old-Return-Path: |
|
| Date: |
Tue, 26 Sep 1995 11:56:40 -0400 (EDT) |
| Precedence: |
list |
| From [log in to unmask] Sat Apr 27 14: |
53:26 1996 |
| Cc: |
|
| X-Status: |
|
| Status: |
O |
| X-Mailing-List: |
|
| TO: |
Jim Marsico <"marsico%Organization=Industrial & Mfg'g Engineering%Telephone=516-595-5879"@a1.allin1.ALLIN1.umc> |
| Return-Path: |
|
| Resent-Sender: |
|
| X-Loop: |
|
| Resent-Message-ID: |
<"Y666j1.0.zIC.yE2Qm"@ipc> |
| Subject: |
|
| From: |
|
| Received: |
by ipchq.com (Smail3.1.28.1 #2)
id m0sxcRs-0000HWC; Tue, 26 Sep 95 11:01 CDT |
| In-Reply-To: |
<90710162905991/95237@ALLIN1> |
| Resent-From: |
|
| Message-Id: |
<Pine.SUN.3.91.950926114433.17526A-100000@automata> |
| Parts/Attachments: |
|
|
Micrograms per square centimeter is a measurement of relative contamination.
The expression refers to the change in conductivity of a test solution of
alcohol and water when you soak a sample of product in it divided by the
square area of the sample.
The test instrument is calibrated by adding an aliquot of sodium cloride
and adjusting the output to read a standard value. The units of the
measurements are really "microgram gram equivalents of sodium cloride per
square area processed".
This system was developed because there is really no way to measure the
"resistivity" of a surface.
---------------------------------------------
While cruising the Internet, be sure to visit
our home page at http://www.automata.com
---------------------------------------------
On Tue, 26 Sep 1995, Jim Marsico wrote:
> Can anyone tell me the correlation between micrograms/square centimeter and
> resistivity for PWB cleanliness?
>
>
>
|
|
|
