·          通过更严格的UHPLC测试，极低的背景基线和杂质干扰（如邻苯二甲酸酯和聚乙二醇等）

·          通过UHPLC-MS TOF正离子和负离子模式测试，在模式切换时不会产生剧烈的基线漂移

·          包装于白色硅硼酸盐玻璃瓶中，有效避免碱金属加合物的生成

·          经0.1 μm膜过滤，不增加溶剂产生的背压

·          极高的批次重现性

grade LC-MS Ultra CHROMASOLV®

shelf life  (limited shelf life, expiry date on the label)

total impurities ≤0.0001% non volatile impurities

  ≤1 ppm fluorescence (as quinine) at 254 nm

  ≤1 ppm fluorescence (as quinine) at 365 nm

  ≤20 ppb UHPLC-MS (q-TOF)(Digoxin, ESI(-))

  ≤5 ppb UHPLC-MS (q-TOF)(Reserpin, ESI(+))

transmittance 200 nm, ≥95%

  230 nm, ≥99%

refractive index n20/D 1.34(lit.)

bp 100 °C(lit.)

density 1.000 g/mL at 3.98 °C(lit.)

anion traces chloride (Cl-): ≤0.01 mg/kg

  fluoride (F-): ≤0.01 mg/kg

  nitrate (NO3-): ≤0.1 mg/kg

  sulfate (SO42-): ≤0.1 mg/kg

cation traces Al: ≤0.5 mg/kg

  Ba: ≤0.1 mg/kg

  Ca: ≤0.1 mg/kg

  Cd: ≤0.05 mg/kg

  Co: ≤0.02 mg/kg

  Cr: ≤0.02 mg/kg

  Cu: ≤0.02 mg/kg

  Fe: ≤0.1 mg/kg

  K: ≤0.1 mg/kg

  Mg: ≤0.1 mg/kg

  Mn: ≤0.02 mg/kg

  Na: ≤0.1 mg/kg

  Ni: ≤0.02 mg/kg

  Pb: ≤0.1 mg/kg

  Sn: ≤0.1 mg/kg

  Zn: ≤0.1 mg/kg

abs. UHPLC-gradient/210 nm ≤2 mAU (peak)

  UHPLC-gradient/210 nm ≤8 mAU (drift)

  UHPLC-gradient/254 nm ≤0.6 mAU (peak)

  UHPLC-gradient/254 nm ≤3 mAU (drift)

suitability passes test for UHPLC-MS