- Joined
- Jan 8, 2004
- Messages
- 90
There is not enough lead in the copper and zinc to ever get worried about if you are using the materials that alot of us have read about. The ROP I built uses oxygen free copper from McMasters. I searched on the web for the chemical composition of oxygen free copper and found...
Oxygen Free copper is produced in several grades:
BS C103, Cu-OF and C110, Cu-OFE are melted and cast in an oxygen free atmosphere to give very low oxygen level, typically under 2ppm. For use in vacuum seals, e.g in glass vacuum tubes, the C110 grade needs to be oxidised on its surface at high temperature to gives good adhesion, but even small amounts of phosphorus can reduce the adhesion, so the level is kept below 3ppm.
Cu-OF has conductivity almost identical to ETP, but Cu-OFE is about 1.5% better. OFHC (a registered trade-mark) appears to be similar to Cu-OFE. HC means 'high conductivity' while OFE means 'oxygen free electronic grade'. Copper purity is typically 99.997% for both.
So if ALL of the remaining trace elements in oxygen free copper were lead (which is highly unlikely) then the lead content would be 0.003%. Lead in the copper used is not an issue.
As for the zinc, all of the ROPs that I have heard of use the pure zinc corrosion inhibitor rods from McMasters. Again lead is not a concern. ...
Oxygen Free copper is produced in several grades:
BS C103, Cu-OF and C110, Cu-OFE are melted and cast in an oxygen free atmosphere to give very low oxygen level, typically under 2ppm. For use in vacuum seals, e.g in glass vacuum tubes, the C110 grade needs to be oxidised on its surface at high temperature to gives good adhesion, but even small amounts of phosphorus can reduce the adhesion, so the level is kept below 3ppm.
Cu-OF has conductivity almost identical to ETP, but Cu-OFE is about 1.5% better. OFHC (a registered trade-mark) appears to be similar to Cu-OFE. HC means 'high conductivity' while OFE means 'oxygen free electronic grade'. Copper purity is typically 99.997% for both.
So if ALL of the remaining trace elements in oxygen free copper were lead (which is highly unlikely) then the lead content would be 0.003%. Lead in the copper used is not an issue.
As for the zinc, all of the ROPs that I have heard of use the pure zinc corrosion inhibitor rods from McMasters. Again lead is not a concern. ...
Jason1 said:Can you get poisoning from the ROP. I think it is lead I'm talking about. Cause I think when lead builds up in you it is never removed. Someone in the news just died from lead build up in his system. So can this happen with the ROP?