About Growth promotion test

Dear sir
I have done gpt every autoclave cycle for media. But my procedure shall be modified as, every media required ideal media for comparison purpose. Its really required?? Means every time 2 lot require for autoclave.

Test the media for GPT only when you open the new box of media, you don’t require to test it for GPT every day. It is required to have a positive control with every analysis.

But sir after autoclaving media parameter or their nutrition is capable or not for growth on media that’s why GPT perform each autoclaving media

Positive control will cover that.

Ok sir. Thanx guiding