Trial #5

Trial #5

To compare parts cleaned in three different solutions using OSEE.

1999

7

5

43

44

Part

08/30/1999

0.00

No relation

Jason Marshall

Aluminum

There are no related objects.

None

None

OSEE

Parts were received cleaned by client. Five OSEE readings were made per side for each part supplied. Optically Stimulated Electron Emission or PEE, Photo Electron Emission is based on the principle that metals and certain surfaces emit electrons upon illumination with ultraviolet (UV) light. These electrons can be collected, measured as current, converted to a voltage and digitally displayed. A surface contaminant will either enhance or attenuate this signal, depending on it own photoemissive nature. While OSEE will not identify a contaminant, it is a good comparative tool to determine the degree of contamination. This method is best suited for thin films (oils, etc.) and not particulate matter (dust, for example). The average values were calculated and compared to current cleaner levels.
The solutions used were:
Current Cleaner Mix Almet B & Chem-Crest
Oakite Products Inpro-Clean 3800
Calgon Corp SMS 206

SUBSTRATE MATERIAL: Aluminum Parts (5052)
CONTAMINANTS: Clean Parts for Analysis
CONTAMINATING PROCESS USED: N/A

Of the two new products being compared, Calgon Corp had readings that were most similar to the current cleaning solution. Table 1 lists the readings made from both top (shiny) and bottom sides of supplied parts.
Table 1. OSEE Readings

From the OSEE readings made, the Calgon product yielded values that were similar to the current levels.  The average Top readings were 761 for Calgon and 704 for the Current cleaner.  The Bottom values averaged 857 for Calgon and 685 for the Current cleaner.

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