Trial Number 1

The purpose of this trial is to see if stirbar agitation would be suitable for Electro-Optical Devices’s needs. Four different cleaners will be tested in a stirbar agitated beaker with and without brushing.
Cleaning was done in a stirbar 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 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 waterbreak 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

SUBSTRATE MATERIAL: Soda-Lime Glass
CONTAMINANTS: Blanchard Stacking Wax #5
CONTAMINATING PROCESS USED: melted wax applied on with swab and allowed to set

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 cleaners was assigned a number from one to four, one is for the best performer, while four is for the worst.

GRAVIMETRIC ANALYSIS FOR AGITATED IMMERSION

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