Главная \ Метанол для ВЭЖХ (градиентный) #8402

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packed 2.5L

Product No 8402 Methanol 'BAKER HPLC ANALYZED' (Ultra) Gradient Grade 

Test

Specification

Actual value

Assay (by GC) (corrected for water)

min. 99.8 %

100.0 %

Acetone

max. 0.001 %

< 0.001 %

Residue after Evaporation (in ppm)

max. 2

< 2

Titrable Acid (meq/g)

max. 0.0003

< 0.0003

Titrable Base (meq/g)

max. 0.0001

< 0.0001

Water (H2O)

max. 0.02 %

0.018 %

Fluorescence Trace Impurities (as quinine base), ppb:

 

 

Measured at Emission Maximum for Solvent Impurities

max. 1.0

< 1.0

Measured at 450 nm

max. 0.3

< 0.3

Gradient Elution Test Ultraviolet Absorbance (a.u.):

 

 

at 235 nm

max. 0.005

< 0.005

at 254 nm

max. 0.001

< 0.001

Ultraviolet Absorbance (1.00-cm path vs water):

 

 

at 225 nm

max. 0.20

0.10

at 254 nm

max. 0.02

0.01

at 280 nm

max. 0.01

< 0.01

at 350 nm

max. 0.01

< 0.01

UV Cut-off, nm

max. 206

202


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