» Lactulose Solution is a solution in water prepared from Lactulose Concentrate. It contains not less than 90.0 percent and not more than 110.0 percent of the labeled amount of lactulose (C12H22O11).
Packaging and storage Preserve in tight containers, preferably at a temperature between 2 and 30. Avoid subfreezing temperatures.
USP Reference standards 11
Microbial enumeration tests 61 and Tests for specified microorganisms 62 The total bacterial count does not exceed 100 cfu per g of lactulose, and the tests for Salmonella species and Escherichia coli are negative.
pH 791: between 2.5 and 6.5, after 15 minutes of contact with the electrodes.
Auxiliary Information Please check for your question in the FAQs before contacting USP.
USP35NF30 Page 3631Pharmacopeial Forum: Volume No. 37(3)