I have found this discussion interesting. My sterilisaton practice for the past 15or so years has been to wash the instruments well, boil them for at least 10 minutes, wrap in clean cotton cloth then cook in the oven (150C) for at least 1 hour. Put in a paper bag afterwards. My basic instruments are cord scissors, metal cord clamps and larger scissors that could be used for episiotomy, though I can't remember when I last used them. The cord clamps are redundant too, from the days when we used to check for cord after the birth of the head - can't remember when I last did that either. Now the cord doesn't get tought about until after the placenta has been birthed. How things have changed!
By way of an introduction, I am a homebirth midwife in Melbourne Australia. I gave birth to 3 of my children in Lansing MI in the 70s, so I feel as though I still have a bit of a link with birth in the USA.