PSI Crystal Simple Green dilution factor

[swamp diver]

Is there anyone from PSI on this board who can explain why the dilution factor in their oxygen cleaning document is 1:500 for Crystal SG?

This would seem like a homeopathic dilution or possibly a typo, but they also report the same factor for regular Simple Green and 1:770 for Dawn?

TDI suggests 1:10 and Vance Harlow suggests 25:1 to 100:1 apparently based on US navy testing.

The SG manufacturer suggests 1:15 to 1:30 for ultrasonic parts washing.

What is the rationale behind the 1:500 dilution or is this a typo?

 

[swamp diver]

Anybody else have a suggestion as to why the 1:500 dilution rate?

 

[Peter69_56]

I was taught use 10:1 and have with no issues for all my O2 cleaning

 

[abnfrog]

just taught the course today.. we use 1-2 ounces per half gallon

 

[swamp diver]

just taught the course today.. we use 1-2 ounces per half gallon

So if using US gallons and 2 ounces you're at ~ 1:30.

 

[grf88]

Maybe they took it from the Simple Green Website which give a 1:500 dilution for Oxygen cleaning.
Simple Green | Industrial

 

[abnfrog]

that's the ratio I teach ......... ..are you even certified as an 02 technician glenn or are you just regurgitating things you read AGAIN (try to have an original thought ) .... (plus its says crystal ) and discusses " lines " I have been doing this for 20 years

 

[grf88]

I was responding to the OP's question with documentation, unlike some I do not make things up as I go along. Yes I do have an O2 cleaning certification.

 

[guruboy]

that's the ratio I teach ......... ..are you even certified as an 02 technician glenn or are you just regurgitating things you read AGAIN (try to have an original thought ) .... (plus its says crystal ) and discusses " lines " I have been doing this for 20 years

What does "lines" have to do with anything? Did you even READ what he linked?

I have it copy-pasted here for you-

Compressed Gas
Primary Business: Medical equipment, scuba diving and other compressed gas services for oxygen, freon, fluoride, neon and others.

Description of Primary Usage: Clean interiors of equipment and gas lines with 500:1 with Crystal. Rinse thoroughly to remove all organics from surfaces. External parts (masks, tank exteriors, scuba equipment, etc.) can be cleaned with higher concentrations such as 10:1 with Crystal.

Additional Products: 60-gallon Parts Washer, Proportioner, Foamer, Safety Towels, Hand Cleaner Gel, Empty 24oz. Dilution Spray Bottles

 

[northernone]

Nothing to add here but a little humor.

Perhaps the dilution ratio can be reduced by substituting piss?

Myself, I'm curious what effect the various recommended dilution ratios might have.

Too strong risking chemical reactions, too weak, lacking cleaning power? Or does just a splash or two not matter either way in real life? Anyone used a mix too strong and had a consequence beyond wasting money?

I was taught around 1:100 by a random old timer for what it's worth. Not officially trained.

Regards,
Cameron