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Trial Number 1

Trial Purpose:

To see if stirbar agitation will be effective

Date Run:


Experiment Procedure:

The purpose of this trial is to see if stir-bar agitation would be suitable for Electro-Optical Devices’s needs. Four different cleaners will be tested in a stir-bar agitated beaker with and without brushing.
Cleaning was done in a stir-bar agitated beaker set at 150 F. Cleaning time will be determined during the trial depending on the cleaner's effectiveness. Two glass samples will be used for each cleaner, one sample will be cleaned solely by the agitation, while the second sample will be brushed for a few seconds. The samples will be rinsed in a tap water bath for 1 minute at 150 F and then in a DI water rinse for 1 minute at room temperature. The parts will then be dried under an air knife for 2 minutes and then in a convection oven set at 120 F for 30 minutes.
The samples will be analyzed gravimetrically to get a percent removal. The samples will be observed with a water-break test to detect any residual wax. After drying, the samples will be checked for any water spotting that may occur.
Trial #1-
SAMPLE NUMBERS: #1, #2(brushed)
CLEANING PRODUCT: Alconox Alcojet Detergent
CONCENTRATION: 2% solution (20 grams per liter solution)

Trial #2-
SAMPLE NUMBERS: #3, #4(brushed)
CLEANING PRODUCT: International Products Micro
CONCENTRATION: 4% by volume

Trial #3-
SAMPLE NUMBERS: #5, #6(brushed)
CLEANING PRODUCT: Oakite Inproclean #3800
CONCENTRATION: 10% by volume

Trial #4-
SAMPLE NUMBERS: #7, #8(brushed)
CLEANING PRODUCT: Innovative Organics L-12 cleaner
CONCENTRATION: 10% by volume

CONTAMINANTS: Blanchard Stacking Wax #5
CONTAMINATING PROCESS USED: melted wax applied on with swab and allowed to set

Trial Results:

After cooling down, all the cleaners were ranked in four categories: Percent Removal without brushing, Removal with brushing. Wax separation from cleaner solution, and Spotting. For each category, each cleaner was assigned a number from one to four, one is for the best performer, while four is for the worst.

  Percent Removal Brushing Removal Wax Separation Spotting
Alcojet 1 1 2 1
Micro 3 3 1 3
Inproclean #3800 2 1 3 1
L-12 4 4 4 4


Sample # Clean mass (g) Mass with contamination (g) Mass after cleaning (g) Contaminant removed (g) Percent Removal
1 14.8777 15.8713 14.8775 0.9938 100.02%
2 16.5521 19.1277 16.5516 2.5761 100.02%
3 12.3687 14.1690 12.6813 1.4877 82.64%
4 14.3598 16.6013 14.3642 2.2371 99.80%
5 15.0674 17.3836 15.0732 2.3104 99.75%
6 13.3556 15.6748 13.5559 2.3189 99.99%
7 14.0975 16.1344 15.1696 0.9648 47.37%
8 15.7478 18.6593 15.7907 2.8686 98.53%

1,2 Alconox Alcojet
3,4 International Products Group Micro
5,6 Oakite Inproclean #3800
7,8 Innovative Organics L-12

Success Rating:

Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

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