Drummond Microcaps are a fast, safe, clean, and accurate way to transfer liquids in micro quantities. -Disposable -Accurate (±1%) -Dependable -Easy to Use -Fast They are precision-bore glass capillary tubes cut to predetermined lengths, so fill volumes are constant and precise. Microcaps are inexpensive and disposable.Using a Microcap is simple. Capillary action draws the fluid into the tube, and a squeeze of the bulb dispenses it. For spotting applications such as TLC, a provided spotting holder allows the liquid to be dispensed by touching the tube to the spotting surface. Ordering information: This kit includes 100 microcaps and one Bulb Dispenser.