Glass Capillary Tubes/Micro Pipettes TLC Spotting 0.3mm ID x 100mm 500 or 1500/pk AAdvance Instruments (500)

Features 500 per pack capillary tubes, 0.3mm inner diameter, 0.5mm outer diameter.

100mm length.

Convenient packaging with 1.5mm hole on cap for easy tube drawing without need of opening the cap or keeping it open all the time.

As shown in photos, approximate spotting volume as tested for dichloromethane is 20mm x (0.15mm)² x 3.14 = 1.5µL, for acetone is 30mm x (0.15mm)²x 3.14 = 2µL, and for water is 50mm x (0.15mm)² x 3.14 = 3.5µL.

Testing method used is placing the tube at a straight up angle with only the tip submerged in the liquid and allowing the liquid to keep on climbing until it stops.