Laboratory Testing Centre
Attachment 1: Testing time in Testing Center and Requirement for sending samples.
| Testing Items | Requirement for sending samples |
| NMR | 1) Sample Purity ≥90%。 2）Sample quantity ≥10mg or Molar concentration≥0.05。 3) Choose deuterated solvent accurately. The wasted solvent will be charged if choose inaccurately. Remark: 1) Inconstant sample, test in arranged time after contact with equipment operators. 2) The sample quantity less than 10 mg will be tested on the weekend or holiday. |
| Mass Spectrometry |
1) Samples could not be dissolved in deuterated solvent 2)Sample quantity 0.1-1 mg |
| Infrared Spectrum |
1) The samples must be tested after dried for 24 hours. There is no water and no solvent in samples. 2) Sample quantity ≥ 1 mg (dry weight) |
| Ultraviolet Spectrum |
1) sample size≥1 mg(consultation is needed when the sample size is less than 1 mg.) 2) sample is waterless and solventless. |
| GC-MS | 1) samples should be waterless and without amount insoluble matters. 2) after heated, samples are easy to evaporate, and without decomposed. |
| Gas Chromatography |
1) samples should be waterless and without amount insoluble matters. 2) after heated, samples are easy to evaporate, and without decomposed |
| Optical Rotatory Dispersion | 1) sample concentration ≥2 mg/ml. 2) sample is transparent and clainfying. 3) sample is waterless and solventless. |
*Remark：Accordance with the above schedule when the apparatus is under normal condition.