Acetonitrile Ultra LC-MS

TEST	U.M.	SPECIFICATION
Description	-	Clear liquid
Colour (APHA)	-	<= 10
Refractive index at 20°	-	1.3420 ÷ 1.3440
Residue on evaporation	%	<= 0.0002
Assay (GC)	%	>= 99.95
Fluorescence	-	-
at 254 nm	ppb	<= 1
at 365 nm	ppb	<= 0.5
U.V. Transmittance	-	-
at 195 nm	%	>= 82
at 200 nm	%	>= 95
at 220 nm	%	>= 98
HPLC gradient (peak) at 210 nm	mAU	<= 2
Gradient baseline drift at 210 nm	mAU	<=10
HPLC gradient (peak) at 254 nm	mAU	<= 0.5
Gradient baseline drift at 254 nm	mAU	<= 3
Test LC-MS TIC (50-2000m/z) ESI (+)
Sensitive Impurities (reserpine)	ppb	<= 100
Metals compounds	-	-
Al	ppb	<= 50
Fe	ppb	<= 50
Na	ppb	<= 50
Ca	ppb	<= 50
Mg	ppb	<= 50
K	ppb	<= 50

Filtered through 0.1ìm membrane. Binary gradient test conditions : water-methanol from 5 to 90% of methanol in 16 minutes at 1,8ml/min.