Re: [time-nuts] Standard Resistor oil
You want the stuff sold for laxative use, USP Mineral Oil, sometimes trademarked Nujol. You do NOT want Baby Oil. -John > Hi > > Some drug store mineral oil has extra "stuff" in it. This is one case > where you want the cheap generic version rather than the "improved" name > brand. > > Bob > > > On Feb 1, 2010, at 5:56 PM, Chuck Harris wrote: > >> Plain old mineral oil, also known as paraffin oil, as can be found in >> any >> drugstore. >> >> They should be filled above the element, but not quite full. Maybe 3/4 >> to 7/8 >> full. It isn't really important. >> >> -Chuck Harris >> >> Chris Erickson wrote: >>> I bought some old Leeds & Northrup standard resistors on ebay and and >>> seller >>> dumped the oil out before sending them. Does anyone know what the >>> correct >>> kind of oil to put back in these? How full should they be? >>> ___ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >> >> ___ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Standard Resistor oil
The stuff in the store generally has Vitamin E in there as a stabilizer, and sometimes fragrance if marketed as baby lotion. Get the stuff for use as a laxative and it *should* be okay. I had to buy tens of gallons of this stuff from the local pharmacies because the local national laboratory saw mineral oil as a hazard when it came in 5 gallon carbouys. It's toxic, flammable, and causes skin irritation unless it's sold as baby lotion or laxative! Always take the MSDS sheets with a grain of salt. -Bob On Mon, Feb 1, 2010 at 6:02 PM, Bob Camp wrote: > Hi > > Some drug store mineral oil has extra "stuff" in it. This is one case where > you want the cheap generic version rather than the "improved" name brand. > > Bob > > > On Feb 1, 2010, at 5:56 PM, Chuck Harris wrote: > > > Plain old mineral oil, also known as paraffin oil, as can be found in any > > drugstore. > > > > They should be filled above the element, but not quite full. Maybe 3/4 > to 7/8 > > full. It isn't really important. > > > > -Chuck Harris > > > > Chris Erickson wrote: > >> I bought some old Leeds & Northrup standard resistors on ebay and and > seller > >> dumped the oil out before sending them. Does anyone know what the > correct > >> kind of oil to put back in these? How full should they be? > >> ___ > >> time-nuts mailing list -- time-nuts@febo.com > >> To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >> and follow the instructions there. > > > > ___ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Standard Resistor oil
Hi Some drug store mineral oil has extra "stuff" in it. This is one case where you want the cheap generic version rather than the "improved" name brand. Bob On Feb 1, 2010, at 5:56 PM, Chuck Harris wrote: > Plain old mineral oil, also known as paraffin oil, as can be found in any > drugstore. > > They should be filled above the element, but not quite full. Maybe 3/4 to 7/8 > full. It isn't really important. > > -Chuck Harris > > Chris Erickson wrote: >> I bought some old Leeds & Northrup standard resistors on ebay and and seller >> dumped the oil out before sending them. Does anyone know what the correct >> kind of oil to put back in these? How full should they be? >> ___ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Standard Resistor oil
Plain old mineral oil, also known as paraffin oil, as can be found in any drugstore. They should be filled above the element, but not quite full. Maybe 3/4 to 7/8 full. It isn't really important. -Chuck Harris Chris Erickson wrote: I bought some old Leeds & Northrup standard resistors on ebay and and seller dumped the oil out before sending them. Does anyone know what the correct kind of oil to put back in these? How full should they be? ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Standard Resistor oil
What I have seen in the old text books is that these resistors all sit in a tub with oil around them. The oil is at some higher temperature. I have a few of these resistors and no oil in them nor will I be putting oil in them. They seem to work to the limits of resolution of my test gear. 5.5 digit HP meters. Gud enough as they say. I do keep them on absorbent paper because they do leak a bit even after 10 years. On Mon, Feb 1, 2010 at 4:27 PM, Don Latham wrote: > Hi Chris: Maybe used to be PCB's (yuck) You can use mineral oil, available > at your friendly drugstore. Make sure everything is covered, leave a > little for thermal expansion, don't need too much airspace. Use 'em on a > paper towel, and if they are over full, they'll leak out the pinhole that > lurks somewhere :-) on first use... > > Don > > Chris Erickson > > I bought some old Leeds & Northrup standard resistors on ebay and and > > seller > > dumped the oil out before sending them. Does anyone know what the correct > > kind of oil to put back in these? How full should they be? > > > > ___ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > -- > Dr. Don Latham AJ7LL > Six Mile Systems LLP > 17850 Six Mile Road > POB 134 > Huson, MT, 59846 > VOX 406-626-4304 > www.lightningforensics.com > www.sixmilesystems.com > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Standard Resistor oil
Hi Chris: Maybe used to be PCB's (yuck) You can use mineral oil, available at your friendly drugstore. Make sure everything is covered, leave a little for thermal expansion, don't need too much airspace. Use 'em on a paper towel, and if they are over full, they'll leak out the pinhole that lurks somewhere :-) on first use... Don Chris Erickson > I bought some old Leeds & Northrup standard resistors on ebay and and > seller > dumped the oil out before sending them. Does anyone know what the correct > kind of oil to put back in these? How full should they be? > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > -- Dr. Don Latham AJ7LL Six Mile Systems LLP 17850 Six Mile Road POB 134 Huson, MT, 59846 VOX 406-626-4304 www.lightningforensics.com www.sixmilesystems.com ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] Standard Resistor oil
I bought some old Leeds & Northrup standard resistors on ebay and and seller dumped the oil out before sending them. Does anyone know what the correct kind of oil to put back in these? How full should they be? ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
