Purity (GC): ≥ 99.9 %

Identity (IR): conforms

Evaporation residue: ≤ 2.0 mg/l

Color: ≤ 10 Hazen

Water: ≤ 0.05 %

Acidity: ≤ 0.0002 meq/g

Alkalinity: ≤ 0.0002 meq/g

Gradient grade (at 235 nm): ≤ 1.0 mAU

Gradient grade (at 254 nm): ≤ 1.0 mAU

Fluorescence (as quinine at 254 nm): ≤ 1.0 ppb

Fluorescence (as quinine at 365 nm): ≤ 0.5 ppb

Transmission (Checking after purging with N₂ (at 220 nm)): ≥ 80 %

Transmission (Checking after purging with N₂ (at 230 nm)): ≥ 90 %

Transmission (Checking after purging with N₂ (from 250 nm)): ≥ 99 %

Al (Aluminium): ≤ 10 ppb

Ca (Calcium): ≤ 10 ppb

Fe (Iron): ≤ 10 ppb

K (Potassium): ≤ 5 ppb

Mg (Magnesium): ≤ 10 ppb

Na (Sodium): ≤ 150 ppb

Any further metal (ICP-MS): ≤ 5 ppb

Suitable for LC-MS; Intensity of background mass peak based on reserpine(APCI/ESI positive): ≤ 10 ppb

Suitable for LC-MS; Intensity of background mass peak based on reserpine(APCI/ESI negative): ≤ 20 ppb

Filtered by 0.2 µm filter.