UNITY2 tube oven conversion kit,3 1/2 " to 4 1/2 "

Sample Rack for 54 vials of 2mL, vials not included, pk 3

Tenax TA,C6/7-C30,SafeLok, SS tubes,cust etch,pk10

CG 5TD, 40/60mesh, inert tubes, conditioned/capped, pk 10