SafeLok™ tubes
Reduce sample handling risks with state-of-the-art diffusion limiting technology
Markes patented SafeLok tubes* have the same sorbent capacity as standard glass and inert coated tubes but incorporate diffusion locking technology at either end. SafeLok tubes eliminate risk of post-sampling outgassing, making tubes safer to handle in the field.
Further information: SafeLok tubes
For part numbers and pricing please contact your local Markes distributor 
Relevant technical support publications from Markes International can be automatically downloaded from this web site (registration required). Examples include:
* Patent No: GB2337513