I work at a fluids Geochemical laboratory and we know from experience that the Cali-5-Bond bags are the most robust gas sampling vessel. Clients will drop off samples in cheap tedlar bags only to be disappointed when the results have been compromised due to vessel leakage. We always in turn recommend they use Cali-5-Bond bags in the future to drastically reduce this possibility. Cheap leaking tedlar bags will always change the isotopic results of the sample. An ounce of prevention is worth a pound of cure.
