English to Russian Medical Chemistry; Chem Sci/Eng Assessment of mercury in urine

Я запуталась в терминах: blank test solution, standard test solution and sample test solution. Правильно ли будет перевести первые два как "холостой испытуемый раствор" и "стандартный испытуемый раствор"? Но как тогда перевести sample test solution? Примеры из текста:

Each of the blank test solutions should be measured first.
After that standard test solutions should follow.
If the calibration curve is acceptable, sample test solutions can be measured.

Therefore, the blank test solution is used for dilution of the sample test solution, and both the sample test solution and the standard test solution are measured under the same conditions in every respect (acid concentration and volume).

The peak heights (mm) obtained after measurement of known volumes of the blank, the standard and the sample test solutions (or their diluted solutions) are labelled Pblank (blank), Pstd (standard) and Psample (sample), respectively.