| 摘要 |
FIELD: medical engineering. ^ SUBSTANCE: test sample material has sintered polycrystalline hydroxyapatite having potassium to phosphorus content ratio within the limits of 1.50 to 1.67, apparent density being from 3 to 3.1 g/cm3 and the sample for testing tooth cream is manufactured as spatial body having test surface from sample material showing the above referenced properties. Test surface purity is of tenth precision class. The sample is manufactured as pill. ^ EFFECT: high reproducibility of test results. ^ 4 cl |
