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Trial Number 1

Client Number 541

Project Number 1

Trial Purpose:

To test the efficacy of aqueous cleaners and detergents in removing machining oil from sample parts using ultrasonics.

Date Run:

04/23/2026

Experiment Procedure:

Three sample parts of each part type were grouped together and assigned to one of each of the cleaners to be cleaned.  The three sample parts of each part type were weighed together using a gravimetric balance and had their initial weights recorded.  Each sample part was then immersed in the provided Swisscut Ortho NF-X US 24 Machining Oil for 2 minutes.  During the 2-minute immersion in the oil, the parts were inverted twice to aid in the filling of blind holes and complex thread geometry.  The parts were then removed and re-weighed in their groups of three to have their dirty weights recorded. The parts were then subjected to 5 minutes of unheated ultrasonics cleaning in their respective cleaner.  Once removed from ultrasonics immersion, each part was individually tried utilizing a pressurized air stream for 30 secs.

Trial Results:

Cleaner Part Initial wt of cont. Final wt of cont. %Cont Removed % AVG
BG-Clean 402 10% Sterile Nealing 0.0327 0.0014 95.72 95.41
BLX 0.1119 0.0021 98.12
Basel Screw 0.0158 0.0008 94.94
Variobase 0.0605 0.0023 96.20
BLT-NC 0.0589 0.0040 93.21
BLC-WB 0.0751 0.0034 95.47
Analog 0.0531 0.0038 92.84
TLX 0.0678 0.0022 96.76
Crystal Simple Green 10% Sterile Nealing 0.0379 0.0000 100.00 96.38
BLX 0.1065 0.0036 96.62
Basel Screw 0.0193 0.0001 99.48
Variobase 0.0632 0.0006 99.05
BLT-NC 0.0651 0.0049 92.47
BLC-WB 0.0896 0.0038 95.76
Analog 0.0565 0.0032 94.34
TLX 0.0657 0.0044 93.30
Micro 90 2% Sterile Nealing 0.0337 0.0000 100.00 97.98
BLX 0.0997 0.0006 99.40
Basel Screw 0.0169 0.0002 98.82
Variobase 0.0581 0.0007 98.80
BLT-NC 0.0584 0.0034 94.18
BLC-WB 0.0737 0.0022 97.01
Analog 0.0425 0.0004 99.06
TLX 0.0757 0.0026 96.57
Alconox 2% Sterile Nealing 0.0315 -0.0005 101.59 101.26
BLX 0.1048 -0.0014 101.34
Basel Screw 0.0171 -0.0015 108.77
Variobase 0.0785 -0.0016 102.04
BLT-NC 0.0681 0.0001 99.85
BLC-WB 0.0997 -0.0003 100.30
Analog 0.0535 0.0017 96.82
TLX 0.0623 0.0004 99.36

Parts with small threading (BLT-NC, BLC-WB, and TLX) as well as the Analog (due to its wide circumference) parts were the most difficult to fully dry with the pressurized air blow off.  This could account for lower cleaning efficacy of these parts compared to other parts.

Several of the parts cleaned with Alconox show a cleaning efficacy percentage larger than 100%.  This could be indicative of incompatibility between the Alconox and the substrates of the sterile nealing, BLX, basel screw, variobase, and BLC-WB parts.  

Success Rating:

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

Conclusion:

The BG-Clean 402, Crystal Simple Green, and Micro 90 can be considered effective as they all showed over 75% efficacy.  The Micro 90 showed the highest overall removal of 97.98%.  The Alconox may be incompatible with certain substrates leading to the degradation of the surface.

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