CG-1296 - DRYING TUBES, "U" SHAPED- Chemglass Life Sciences
U-Shaped Drying Tubes, 175mm x 20mm - ScienceKitStore.com
Glass U-Tube - ALA
Amazon.com : Seachem Glass U Tube, 10mm : Pet Supplies
Ideal Vacuum | Sample-Seal U-Tube Liquid Sample Holders, 5/8 inch OD, HV Valves, #15 O-ring Joint Flanged Includes two 0-4 mm High Vacuum Valves with O-Ring on Tip., High Vacuum Storage Sample