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Environmental Reference Standards <
MegaMix® Mixtures
CLP VOA CAL2000 MegaMix® (28 components)
In methanol solution, ketones can interact with other compounds, resulting in a methoxy addition to the ketone.¹ The presence of halogenated compounds greatly speeds the reaction, limiting shelf-life to less than two months. Because none of eighteen preservatives (including water) was successful at inhibiting the reaction, we do not combine ketones with halogenated compounds in any of our calibration mixtures.
benzene
bromodichloromethane
bromoform
carbon disulfide
carbon tetrachloride
chlorobenzene
chloroform
dibromochloromethane
1,1-dichloroethane
1,2-dichloroethane
1,1-dichloroethene
cis-1,2-dichloroethene
trans-1,2-dichloroethene
1,2-dichloropropane
cis-1,3-dichloropropene
trans-1,3-dichloropropene
ethylbenzene
methylene chloride
styrene
1,1,2,2-tetrachloroethane
tetrachloroethene
toluene
1,1,1-trichloroethane
1,1,2-trichloroethane
trichloroethene
m-xylene
o-xylene
p-xylene
Quantity Discounts
Order 3 or 4 of any one analytical reference material
product and receive a
10% discount! Order 5 or more
of any one analytical reference material product and
receive a
20% discount!
¹A comparison of ketone stability in calibration mixes for EPA Method 524.2 Revision 4.0, Christopher Cox, et. al., 1997 Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy, poster number 467P.
