Engineering topics
Robertson, M. D.
Publications and source records attributed to Robertson, M. D..
Checking Weld Composition
Electrolytic etching determines whether certain iron/nickel alloys welded with sufficient quantities of desired filler metal.
Robertson, M. D.↗
Gas chromatograph injection port protective device
To prevent samples containing foreign matter from poisoning the gas chromatographic columns, a pre-filter insertion is placed in the injection port. The packing becomes a variable reactant, for example, acids are removed by using an alkaline liquid.
Robertson, M. D.↗