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Inexpensive Chromatography An inexpensive way to equip your chemical laboratory with thin layer chromatography (TLC) developing tanks is to contact your cafeteria or n local eating establishment and ask for the institutional size relish or pickle wide-mouth glass jars. The one we use is the one-half gallon jar, having a volume of 64 oz. The approximate dimensions are: height 8%in. (21.6 cm) by 43/d in. (12.1 cm) diameter. The mouth opening is 3% in. (7.9 cm). The lid (cap) has a sealer coating that will retain the solvent in the jar when closed. The jar will accommodate plates up to 5 X 20 cm in size. An adequate liner for the jar can he made from filter paper. I find Whatman's qualitative No. 1,24 cm diameter trimmed to 24 by 16 cm satisfactory for lining the jar-tank. Another cost saving suggestion is using your empty one gallon plastic milk jugs for laboratory waste chemicals and waste solvents. Remove the old label and attach a new label or tag identifying the contents. For safety, it is recommended that the plastic jug be placed in a metal container until moved for disposal.
com0.y omon P'"'dal wmr
DnOle
TLC PLATE OEVELOPINC TANK
David W. Zutaut 42 Oakdale Blvd. Pleasant Ridge. M' 48069
Volume GO
Number 10
October 1983
899
