So this measuring beaker can also be used to weight the SN?
[...]
This beaker is going to be used to measure the water accurately before I pour it into the SN cup.
That beaker can be used to measure the
volume of a liquid, because that is what it is designed for.
But if you are talking about the
weight of the SN, then you need to be using
scales for this. That's not to say you can't keep it in the beaker while doing so, but the beaker functions only as a container to hold the SN,
not as a means of measuring weight. You would also need to have a
tare function on your scales, or factor this in manually.
Note that the one exception to this is if you are using previously known weight values of SN per unit of volume. But this can still vary, and so is
not a technique I would recommend.
This is
important information. If you don't fully understand
everything I have said here, read up on it or seek further explanation
before going any further with the SN method.
... You have had a mug filled with a quite possibly extremely lethal substance that will look like regular water to anyone else just sitting out in the open for several weeks in a house you do not inhabit alone?
Yes, exactly this. Jesus H. Christ,
@Wisdom3_1-9! Seems your username certainly didn't apply to that decision