kal
Well-Known Member
Hi guys!
My pharmacy sells two types of Epson Salt:
Epson Salt (MgSO4)
Epson Salt Heptahydrate (MgSO4-7H20)
The second one is basically Epson Salt with water added to it. Why? From Wikipedia:
"Since the anhydrous form is hygroscopic (readily absorbs water from the air) and is therefore difficult to weigh accurately, the hydrate is often preferred when preparing solutions, for example in medical preparations."
When spreadsheets and programs here refer to using Epson Salt, I imagine they mean the "pure" version right?
Doesn't the 'pure' version over time turn in the secone one with water meaning that that the weight wil be different if buy the first one and use it over many years?
In the end does it really matter which I use?
Kal
My pharmacy sells two types of Epson Salt:
Epson Salt (MgSO4)
Epson Salt Heptahydrate (MgSO4-7H20)
The second one is basically Epson Salt with water added to it. Why? From Wikipedia:
"Since the anhydrous form is hygroscopic (readily absorbs water from the air) and is therefore difficult to weigh accurately, the hydrate is often preferred when preparing solutions, for example in medical preparations."
When spreadsheets and programs here refer to using Epson Salt, I imagine they mean the "pure" version right?
Doesn't the 'pure' version over time turn in the secone one with water meaning that that the weight wil be different if buy the first one and use it over many years?
In the end does it really matter which I use?
Kal