A closer ratio of Calcium to Magnesium in rat research has been found to increase the absorption of into the bones of rats, than the former noted high ratio of 1995 Laboratory Rat Requirement standard noted 25 years prior. The same closer ratio was also found to reduce calcium loss into the urine from the diet compared to the higher ratio of Calcium to Magnesium, inhibiting the formation of calcium crystals in the kidneys, bladder, joints, and blood vessels of rats with Magnesium citrate form, which can otherwise can have a negative impact on the tissues and organs in rodents.
https://www.amazon.com/Douglas-Labor...290103&sr=8-16
This source of liquid Magnesium citrate (a source that inhibits notes (225 mg.) elemental in 1 Tsp. measure. In 1/8 Tsp. measure this source provides approx. (28 mg.) of elemental calcium.
Save you have a set of measuring spoons that includes a 1/8 measure, this set includes this along with a full set of from ¼ to 1/64 Teaspoons that are nice to have on hand to support using the other measures. It also is one of the few sources that includes the Teaspoon fraction on the handles.
https://www.amazon.com/Morgenhaan-St...293945&sr=8-14