The Salifert magnesium test is very straightforward and does not suffer from calcium and strontium interferences when within certain bounds. It measures in sufficient accurate steps of 30 mg/L with a sharp color change.
Reasons to choose Salifert Test Kits:
The Salifert liquid-magnesium additive does not imbalance the system and is ultra pure. Salifert was the first in offering such an additive.