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Trial Number 5

Trial Purpose:

Cleanliness measurement of parts cleaned by client

Date Run:


Experiment Procedure:

Three sets of parts were measured using an OSEE instrument. Each set contained six parts chosen at random. One reading was made for each part and the average OSEE reading was determined. The resultant values were compared to results from previous trials.

SUBSTRATE MATERIAL: Stainless Steel parts
CONTAMINANTS: C-Eblis oil (sulfur based)

Trial Results:

Consistent readings were obtained for all the parts tested. Table 1 lists the readings for the three sets as well as the calculated average.
Table 1. OSEE Readings of cleaned parts

Set 1 Set 2 Set 3  
155 146 160  
164 161 169  
156 156 172  
173 154 169  
153 182 162  
162 160 144  
160.5 160 163 Average
    161 Overall Ave

Comparing these values to the results from the previous values reveals that this weeks parts are not as clean as the others. Table 2 lists the three weeks of data.
Table 2. Overall Comparison of Parts Cleaned

New Bath 2-Week Old Bath This Week’s Bath
1343 196 161

Success Rating:

A cleanliness study, addressing only various analytical techniques.


OSEE readings can be used to determine a relative cleanliness of parts.  The lower the OSEE value, the dirtier the part.  In order to further justify this conclusion a cleaning trial will be conducted to relate percent removal to the OSEE readings.

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