• British Pharmacopoeia Volume IV
  • Appendices
  • Appendix I A. General Reagents

Xylenol Orange Triturate
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Xylenol Orange Triturate Triturate 1 part of xylenol orange with 99 parts of potassium nitrate .

Complies with the following test.

Sensitivity Add 50  mg to a mixture of 50  ml of water, 1  ml of 2m acetic acid and 0.05  ml of lead nitrate solution . Add sufficient hexamine to change the colour from yellow to violet-red, and add 0.1  ml of 0.1m disodium edetate VS . The colour changes to yellow.