METHANOL HYPERGRADE FOR LIQUID CHROMATOG

General description

LiChrosolv hypergrade is accurately tested for LC-MS suitability, and meet all the requirements of modern LC-MS ionization methods (ESI/APCI - positive and negative mode). Thanks to their low level of ionic background and low ion suppression, LiChrosolv hypergrade solvents provide high reproducibility and high ionization efficiency. The packaging material has been improved to meet LC-MS quality requirements perfectly.

Preparation Note

Product filtered through a 0.2 μm filter

Analysis Note

Evaporation Number: 1.9

Purity (GC): ≥ 99.9 %
Identity (IR): conforms
Evaporation residue: ≤ 1.0 mg/l
Water: ≤ 0.01 %
Acidity: ≤ 0.0002 meq/g
Alkalinity: ≤ 0.0002 meq/g
Al (Aluminium): ≤ 10 ppb
Ca (Calcium): ≤ 10 ppb
Fe (Iron): ≤ 10 ppb
K (Potassium): ≤ 5 ppb
Mg (Magnesium): ≤ 10 ppb
Na (Sodium): ≤ 100 ppb
Any further metal (ICP-MS): ≤ 5 ppb
Gradient grade (at 220 nm): ≤ 2.0 mAU
Gradient grade (at 235 nm): ≤ 1.0 mAU
Fluorescence (as quinine at 254 nm): ≤ 1.0 ppb
Fluorescence (as quinine at 365 nm): ≤ 0.5 ppb
Transmission (at 210 nm): ≥ 35 %
Transmission (at 220 nm): ≥ 60 %
Transmission (at 230 nm): ≥ 75 %
Transmission (from 260 nm): ≥ 98 %
Suitable for LC-MS; Intensity of background mass peak based on reserpine(APCI/ESI positive): ≤ 2 ppb
Suitable for LC-MS; Intensity of background mass peak based on reserpine(APCI/ESI negative): ≤ 20 ppb
Filtered by 0.2 µm filter.

Legal Information

LICHROSOLV is a registered trademark of Merck KGaA, Darmstadt, Germany