CHROMATOGRAPHY
111
Capillaries / Streakers / Labeling
TLC Spotting Capillaries, MICROCAPS® Microcaps® are precision-bore glass capillary tubes, cut to predetermined lengths so that each capillary tube will hold a known volume of fluid when filled.
TLC Plate Streakers A simple device for uniformly streaking TLC plates.
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Unit consists of a stainless steel base with an adjustable holder for a glass reservoir
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Microcaps® are so inexpensive that it is not impractical to dispose of each tube after use
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Filling is simple
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Supplied complete with glass capillaries, stainless steel capillaries and instructions
Capillary action, not externally applied suction, draws the fluid into the tube To dispense the fluid, simply squeeze the bulb
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Reference: Journal of Chemical Education, Vol. 47, No. 5, May 1970, page 404, “A Simple Streaker for Preparative Layer Chromatography,” L.J. Altman, James R.Trudell
• No unusual skills or training required. Immediate, professional results • Ideal for spotting preadsorbent TLC plates • Supplied in packages containing one bulb assembly and one dispenser vial with 100 micropipets • Volumetric tolerance is ±1% • 764520-0000, the Microcaps® “5 Pack,” is ideal for use in spotting TLC plates • Each 5 Pack has 5 dispenser vials containing 100 micropipets each of 0.5, 1, 2, 5 and 10 microliter sizes • A bulb assembly and spotting holder are also included with the 5 Pack • Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements Part Number Capacity (µL) Length (mm)
416430
• Glassware manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements To operate, the streaker is placed over the edge of the counter top and the plate to be streaked is positioned parallel to it. The bent capillary tip is then adjusted so that it lightly touches the plate. The reservoir is filled with the solution to be chromatographed, and by moving the unit back and forth along the counter edge, a uniform streak is accomplished.
Part Number 416430-0000
Height (mm)
Length (mm)
Case Qty
Case Qty
160
250
1
764500-0000 764500-0001 764500-0002 764500-0005 764500-0010 764520-0000 764500-0020 764500-0025 764500-0050 764500-0100
0.5
32 32 32 32 41
100 100 100 100 100
1 2 5
Replacement Parts
10
Part Number
Description
Case Qty
0.5, 1, 2, 5, 10
1
TLC Plate Streaker Base Assembly TLC Plate Streaker Reservoir
416431-0000
1
20 25 50
64 65
100 100 100 100
416432-0000
1
100 116
Glass Capillary Set (2 Small, 2 Large)
416433-0000
1
100
Stainless Steel Capillary Set (1 small, 1 large)
416434-0000
1
TLC Labeling Template A transparent labeling template designed to fit over TLC plates without disturbing the absorbent layer.
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The apparatus features spotting guide ruler, compound and solvent travel distance markers, and circles for estimation of spot sizes Origin and 10 cm bold reference lines are provided to enable fast calculation of Rf-values
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Part Number 416450-0000
Length (mm)
Width (mm)
Case Qty
220
200
1
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