Since we changed the old peristaltic pump tube (G1833-65569) to the new (5005-0020) one, we have had problems with the tune RSD%. With the old ones the RSD% were between 2,5-3,9% and now with the new one that all of the RSD% are above 4% and one of the are 4,9-5,2% which are out of the system suitability requirements. These problems are just in He and H2 modes.
I tired to roll up them.
Please help me with what can I do?