All standards of Dr. Ehrenstorfer are produced by the ISO9001. A certificate of Analysis is supplied with all “C” and “CA” neat products. Products with symbol “E” are without a certificate. All solutions are supplied with a gravimetric certificate.
Standards are assigned an expiry date, which is printed on both product label and on the certificate.Different, independent lots are available for all Reference Materials.Product CodesCatalogue number an example: 10330100AC/XA10330100 = Atrazine D5AC = AcetonX = solution >=100 ng/µlA = in ampoulesDescriptionC = certified neatE = neat (not certified)Y = solution >=1000 ng/µlX = solution >=100 ng/µlL = solution >=10 ng/µlZ = solution <=10 ng/µlA = in ampoulesCode | Solvent |
AB | Acetone/Benzene |
AC | Acetone |
AD | Acetone D6 |
AH | Acetone/H20 |
AL | Acetonitrile |
AM | Acetone/Methanol 1:1 |
BE | Benzene |
BMI | Benzene/Methanol |
CT | Cyklohexane/Toluene 1:1 |
CY | Cyklohexane |
DE | 1,2-Dichlorethane |
DH | Diethylether |
DI | Dichloromethane |
DM | DMF |
DO | Deuterium oxide |
EA | Ethylacetate |
EL | Ethanol |
HE | n-Hexan |
IO | Iso-octane |
IP | Isopropanol |
IT | Iso-Octane/Toluene |
MB | Methyl-tert.butyl ether |
ME | Methanol |
MO | Mineral Oil |
MW | Methanol/H20 |
PE | n-Pentan |
TH | Toluene/Hexane |
TO | Toluene |
WA | Water |