Pressure decay failed with very good vacuum value

Question

I don&rsquo;t passed the pressure decay test on a 8890 
 My vacuum was super good at 6x10^-6 torr on my gc ms and last tune gave 1.4 % of N2 
 i need to do this test for our internal sop that ask to perform pressure decay at least once a year to respect OMCL guidelines 
 all the other tests passed at the inlet. 
 I checked all the connections at the inlet as well 
 i wasn&rsquo;t able to find what&rsquo;s wrong here 
 Our openlab cds versions is 2.7 update 08 
 my column ID is 0.18 mm ID

CMZainea · Answer

Hello JF_Fortin , 
 
 May I ask if during the pressure decay test you had the column removed and the inlet capped? 
 
 Based on the description it sounds like you did not, which would not be an accurate way to run the test. For Pressure Decay, the column needs to be removed from the inlet, and the inlet plugged. 
 If you run the test from the front panel you would see the following steps:

JF_Fortin · Answer

Hi, 
 Yes I follow this instructions that the touchscreen of 8890 told me to do.