09:43 – Barbara is at the gym. When she returns, we’ll be doing more science kit stuff. Barbara labeled 200 sterile 15 mL centrifuge tubes yesterday for the BC03 bacteria culture we sell as an option to biology kits. I need to reculture that this week, make a phosphate-buffered saline suspension from that culture, sterilize our filling equipment, and fill those 200 tubes.
I’ve also been looking at water issues this week. Our hot water is at 48C, which is a bit cool. The standard is now 50C rather than the former 60C, which was hot enough to produce third-degree burns on adults with about 5 seconds’ exposure. One issue with the lower temperature is that the bacteria that produce Legionnaires’ disease thrive at 50C, so the federal government recommends 50C for everyone other than households with an immuno-compromised resident, for which they still recommend 60C. Oh, yeah. Our well pressure tank is a 32-gallon unit, which is smaller than I’d prefer but larger than I expected. Which reminds me that I need to call and bump the electrician, who was supposed to be installing a cutover switch for our generator.