NommyWommy
Member
- Joined
- Jun 19, 2016
- Messages
- 171
Hi I am trying to find out how much calcium in mg is contained in egg shell calcium and I am getting conflicting reports. The study at http://ps.oxfordjournals.org/content/79/12/1833.full.pdf says there is about 400mg per gram which agrees with this from another site (Whole Bone Alternatives: When and How to Use Them in a Raw Fed Cat's Diet - CatCentric):
One teaspoon of eggshell powder (finely ground) weighs 6.1g.
The eggshell is 97% calcium carbonate.
Calcium carbonate is 40% elemental calcium.
6.10g
X 97% calcium carbonate
= 5.93g of calcium carbonate
X 40% elemental calcium
= 2.37g of elemental calcium per teaspoon
(2,366.8mg of elemental calcium per teaspoon)
X 1/2 teaspoon
= 1,183.4mg elemental calcium per 1/2 teaspoon in eggshell powder
So by dividing 2.4 grams by 6 you get 0.4 = 400mg per gram.
I have read online and on this forum that one teaspoon is equal to 900mg but from the study and the above calculation this is way out?
Any help would be much appreciated.
Thank you,
Ben
One teaspoon of eggshell powder (finely ground) weighs 6.1g.
The eggshell is 97% calcium carbonate.
Calcium carbonate is 40% elemental calcium.
6.10g
X 97% calcium carbonate
= 5.93g of calcium carbonate
X 40% elemental calcium
= 2.37g of elemental calcium per teaspoon
(2,366.8mg of elemental calcium per teaspoon)
X 1/2 teaspoon
= 1,183.4mg elemental calcium per 1/2 teaspoon in eggshell powder
So by dividing 2.4 grams by 6 you get 0.4 = 400mg per gram.
I have read online and on this forum that one teaspoon is equal to 900mg but from the study and the above calculation this is way out?
Any help would be much appreciated.
Thank you,
Ben