To remove empty and pre-packed 18mm quartz reactors:
USA-6104 - Transparent Quartz Tube, 1.5mm Wall
USA-6110 - Pre-Packed Reactor, Quartz, S/NCS/CHNS, 18mm
USA-6110-E - Pre-Packed Reactor, Quartz, S/NCS/CHNS, Electrolytic Copper, 18mm
USA-6112 - Pre-Packed Reactor, CHN, N & NC
USA-6114 - Pre-Packed Reactor for Flash HT/HT+, Electrolytic Copper, S, NCS, CHNS
USA-6121 - Transparent Quartz Tube, 2mm Wall