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amorphous silicic acid in the form of hard
Menaquinone 4
500/1000 mg
It may be sealed with any 20 mm crimp closures
W ICP-OES 219
Derivatization reagents for GC, silylation, MSTFA, 12x 100 mL Gradation - pH - 2.8 • 3.1 • 3.4 • 3.6 • 3.8 • 4.0 • 4.3 • 4.6 amorphous silicic acid in theThe most volatile trimethylsilyl amide available. MSTFA is a very strong TMS donor which does not cause any noticeable FID fouling even after long time measuring series. The already good solution characteristics can be improved by addition of submolar quantities of protic solvents (e. g., TFA for extremely polar compounds such as hydrochlorides) or pyridine (e. g., for carbohydrates). Advantages of MSTFA are complete reaction with high reaction rates,
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