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Hello, We have HPLC Agilent 1260 the problem is that the pressure bcom very low when we use the gradient mode (The addition of water during the time with Acetonitrile) causes this problem of pressure.
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Dear all, I want to ask about a problem in our GC-MS (Agilent 7890A, 5975C inert XL EI/CI MSD/DS Turbo CI System ) The percentage of N2 is too high (20%) we checked all the sources causing an air...
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