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Re: UOA article - how Blackstone processes UOAs [Re: dnewton3] #3830553 08/23/15 01:00 AM
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Joe90_guy Offline
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Just a thought (and sort of a message to Blackstone) but have you ever considered adding Sulphur to the list of things you quote on your VOA/UOA reports? If, as I suspect, you are running these oils through ICP, then you should get the answer for 'free' so why not report it?
Sulphur is one of those important elements that formulators always look out for, for all sorts of reasons. You obviously get it from ZDDP. You get it from sulphonates and phenates and other additives. You can get it from base oil (maybe not so much these days in the US but elsewhere in the world, definitely). Also sulphur is the 'S' in SAP so it's important to know what the number is from that perspective.

Re: UOA article - how Blackstone processes UOAs [Re: dnewton3] #4049076 03/26/16 12:12 AM
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All the information about how they do it, and what they do in the oil analysis is interesting. Where is the order form?

Re: UOA article - how Blackstone processes UOAs [Re: dnewton3] #4952768 12/15/18 04:25 PM
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Bump with question. Maybe I misread, but it sounds from this write up like they test low temp and high temp viscosites, but the reports I’ve seen show “cst viscosity” at 100 degrees Celsius and “SUS viscosity” at 212 degree Fahrenheit. These are the same actual temp, so sounds like it’s just a different scale they are measuring on (cst vs SUS). I haven’t analyzed / compared various reports, but I found conversion formulas and tables, so all readings that show cst of 10.0, for example, would show the same SUS reading, 58.8 for this example, if I am reading correctly. Are they showing both SUS and CST just for convenience, because some customers may be used to one vs the other? I was actually hoping they were measuring at 2 different temperatures. That would be useful, and is what pds’s show, right?

Last edited by Impatient; 12/15/18 04:45 PM.

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