Back-flushing an HPLC column with guard column on

[Shiknas]

Hello,
Stupid question but still a question.
Can you back flush poroshell 120 (EC-C18, 2.7um) with guard column on?
Purpose: regular cleaning

[Consumer Products Guy]

Hey!
Stupid question but still a question.
Can you back flush poroshell 120 (EC-C18, 2.7um) with guard column on?
Purpose: regular cleaning

Stupid response but still a response:
what is the particle size of the guard column? Larger or the same 2.7um ?

And I'd check with the manufacturer whether the inlet frit and the outlet frit are the same size (ask for both the column and guard column).

[Consumer Products Guy]

Hey!
Stupid question but still a question.
Can you back flush poroshell 120 (EC-C18, 2.7um) with guard column on?
Purpose: regular cleaning

Hey ! Stupid response but still a response:
what is the particle size of the guard column? Larger or the same 2.7um ?

And I'd check with the manufacturer whether the inlet frit and the outlet frit are the same size (ask for both the column and guard column).

Shiknas - it seems that you're not American, but in my opinion "Hey!" is not appropriate here.

[Shiknas]

Hey!
Stupid question but still a question.
Can you back flush poroshell 120 (EC-C18, 2.7um) with guard column on?
Purpose: regular cleaning

Hey ! Stupid response but still a response:
what is the particle size of the guard column? Larger or the same 2.7um ?

And I'd check with the manufacturer whether the inlet frit and the outlet frit are the same size (ask for both the column and guard column).

Shiknas - it seems that you're not American, but in my opinion "Hey!" is not appropriate here.

My apologies for "Hey!", I edited to "Hello!', indeed, I'm not North American.

Guard column has the same particle size - 2.7um. Agilent mentions that their Poroshell 2.7 µm columns comes with 2um frits.

So far it's not an issue but I'm wondering if it worth backflushing guard column in general or just dispose and replace.

Thank you for your response.

[Consumer Products Guy]

Might as well try as frits are the same.