Saturday, 18 January 2014

10:25 – Barbara just finished spreading the mulch. It was 25F (-4C) out there not counting the wind chill, which is significant. I’m doing laundry and filling bottles.

Oh, yeah, and making up chemicals. I didn’t get around to making up more Kastle-Meyer reagent yesterday, and of course an order for a forensic kit arrived this morning. I had to tell the customer we were out of stock on KM reagent and that because of the national holiday Monday his kit wouldn’t ship until Tuesday. I already have the new batch of KM reagent in process. It’s a lot fun to make. Nothing like refluxing a 40% solution of potassium hydroxide and watching the 2-liter flask dissolving in the solution as it refluxes.


2 thoughts on “Saturday, 18 January 2014”

  1. watching the 2-liter flask dissolving in the solution as it refluxes

    Is the flask glass? Big sucker to dissolve. What is the ph of 40% KOH? I would think around 11 or so.

  2. Oh, yeah. It’s a borosilicate Erlenmeyer. Off the top of my head, I’d guess the pH of 40% KOH is 15, give or take a few tenths.

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