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维生素E 标准品系列套装

上一篇 / 下一篇 2008-11-10 15:47:10 / 个人分类：标准品

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维生素E又名生育酚或产妊酚
13788991907 提供维生素E标准品，共5种，各250mg

d-alpha-tocopherol 1 vial x 250 mg
d-beta-tocopherol 1 vial x 250 mg
d-gamma-tocopherol 1 vial x 250 mg
d-delta-tocopherol 1 vial x 250 mg
2,2,5,7,8-Pentamethyl-6-hydroxychroman (PMC) 1 vial x 250 mg

Note: PMC is used as the internal standard for HPLC analysis of tocopherol, but not for GC analysis.

Storage condition:Each vial is aluminum-packed with an oxygen adsorbent. One opening the vials, store the reagent under inert gas in a refrigerator in the dark. Under such conditions, the reagents are stable for 6 months.

Instruction for use (preparation of Solution)

Weigh 50 ~ 100 mg of each reagent by chemical balance, to the nearest 0.1 mg.
Add ethanol or hexane to dissolve the reagent to the final concentration of 1 mg vitamin homologue/mL as the stock solution. The stock solution in tightly capped vials are stable at 5 degrees C for a month.
The standard solutions for each homologue can be prepared by dilution the stock solution just before use.

三烯生育酚20321
标准品以下电话13788991907 提供三烯生育酚三支，独立包装，每支各 10mg
TOCOTRIENOL, D-ALPHA
TOCOTRIENOL, D-DELTA
TOCOTRIENOL, D-GAMMA

电话13817370083提供
另有ALPHA 、BETA 、DELTA、GAMMA 三烯生育酚标准品
TOCOTRIENOL, D-ALPHA     10mg
TOCOTRIENOL, D-BETA        5mg
TOCOTRIENOL, D-DELTA     10mg
TOCOTRIENOL, D-GAMMA    10mg

手机：13788991907 提供
邮箱：手机 @163.com