SarahChen_PharmD said:

Worth answering the question that was asked rather than the one behind it.

Adding a me-too, because a thread of one person's experience is not much use.

lisa_labSD said:

Practical: whatever you change, write down the date and the reason.

Mine went the same way, slower.

lisa_labSD said:

Practical: whatever you change, write down the date and the reason.

There is a second half to this that has not been said yet. The distinction that resolves most of these threads is between what is true on average and what is true for one person. Both are real; they answer different questions and get quoted as if they were the same one.

Adding the numbers, since they settle part of this. One habit that pays for itself: post the method alongside the number. A figure without its method cannot be checked, and an unchecked figure is how this community accumulates folklore.

That is the short version; the long version is somebody else's post.

Moderator note: a post naming a supplier has been edited. Discuss suppliers in the review sections, not here. Thread quality here is what the rules are for. Keep it up.