• British Pharmacopoeia Volume IV
  • Appendices
  • Appendix I C. Standard Solutions

Calcium Standard Solution (100 ppm Ca), Alcoholic
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Calcium Standard Solution (100 ppm Ca), Alcoholic Immediately before use, dilute with ethanol (96 per cent) R to 10 times its volume a solution in distilled water R containing calcium carbonate R equivalent to 2.50 g of CaCO3 and 12 ml of acetic acid R in 1000.0 ml.