Miscellaneous
Nylon Foil Tubing
Dry column
chromatography is simple and economical because the adsorbent is
filled into nylon tubing (other types of columns such as glass etc.
may also be used). This tube is sold folded and in rolls. It is easy
to remove possible creases by blowing a hot air stream through the
tubing. Shaking the tubing in acetone prior to the hot air treatment
facilities “ironing” of the nylon tubing.
Polyamide
Polyamide is based
on Nylon 6. Due to its activation process it exhibits a constant
selectivity toward flavones, chalkones, anthraquinones, aromatic nitro
compounds, DNP amino acids, phenols, carbonic acids, acid amides, sulphonic acids
and amides of sulphonic acids as well as towards amines and quinones.
Forces which contribute to the separation involve hydrogen bonding
between the nitro groups, the phenolic protons, the carboxyl groups etc.
of the sample and the free amino groups of the adsorbent.
Florisil PR
Florisil PR is a
new selective adsorbent, specially processed to give consistent results
when used for column cleanup and separation of chlorinated pesticide
residue prior to identification and measurement of the pesticide by gas,
thin layer or paper chromatography. This material is packed in Alumina
Bottles to ensure purity during storage, shipment, use.
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