Good morning all,
I was under the imprerssion that for the testing of non-sterile products that during suitability and in routine testing the pH of the product in diluent must be checked and verified to be between 6-8.
I have just been reading <61> and under 'Suitability of the Counting Method in the Presence of Product' - 'Preparation of the sample' there are 5 product type options and only pH check and adjustment is detailed for water-soluble products and nonfatty products insoluble in water. There is no mention of pH check within the remaining three types.
My question is therefore;
If i am tetsing a product 'Fluids or solids in aerosol form' (one of the other three product types) do i or dont i need to check the pH and have it in the range of 6-8 for suitability and routine?
Why do you only need to check the pH for the two it specifically mentions?
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