How to prepare ammonium sulphate standard for ammonia production test given by plant growth promoting rhizospheric as well as endophytic bacterial cultures.
It should be made in miligram/ml or in micromol/ml?
Prem Baboo
You can take any unit, these are convertible. As below
(NH₄)₂SO₄, Mol wt= 36+32+64=132
1 mg/ml = 1 g/L
(1 g/L) x (1 mole/132 g) = 0.007576 mole/L = 7.576 mM
Also,
1 mM = 0.001 mole/L
(0.001 mole/L) x (132 g/mole) = 0.132 g/L = 0.2323 mg/ml
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