An auditor should be able to reconstruct why a laboratory selected a product, how it was controlled, and how the final result was reviewed. This guide uses the manufacturer IFU for catalogue 610312 as its technical anchor and translates it into practical review questions for professional laboratories.
Start with the product’s documented role
ACETAMIDE AGAR is used in the differentiation of nonfermentative gram-negative bacteria, particularly Pseudomonas aeruginosa.
Review Liofilchem Acetamide Agar Culture Media 610312 at Kormay Biomedicals
Design the workflow before opening the pack
Define the sample type, inoculum or preparation step, incubation conditions, control organisms, reading window, confirmation pathway, and acceptance criteria in the SOP. Record the catalogue number, lot, expiry, analyst, equipment, and any deviation that could change interpretation.
Preparation checkpoint
Suspend 32.632 g of powder in 1 litre of distilled or deionized water. Heat to boiling and shake until completely dissolved. Sterilise at 121°C for 15 minutes. Dispense in final tubes and allow to solidify in a slant position.
Procedure points worth controlling
Inoculate the Acetamide Agar slant with a loopful of culture emulsified in Tryptic Soy Broth. Incubate inoculated slant at 36 ± 1°C and observe daily for 4 days and again at 7 days before discarding as negative.
Read and document the result
Deamination of the acetamide is indicated by a pronounced purplish-red color of the medium. Complete identification requires determination of the Gram reaction, cellular morphology, biochemical reactions, etc.
Storage and handling
The powder is very hygroscopic: store the powder at 10-30°C, in a dry environment, in its original container tightly closed and use it before the expiry date on the label or until signs of deterioration or contamination are evident. Store prepared media at 2-8°C. WARNING and
Safety and professional-use reminder
The product is not classified as hazardous by current legislation and does not contain harmful substances in concentrations of ≥1%. The product must be used only by properly trained operators.
A practical pre-release checklist
- Current IFU revision and catalogue code verified
- Receipt, storage, lot, and expiry documented
- Controls and acceptance criteria defined before testing
- Reading time and observations recorded without forcing an ambiguous endpoint
- Confirmation and deviation actions linked to the laboratory SOP
Final perspective
Useful technical content should help a laboratory make a better-controlled decision, not replace the IFU or validated method. Confirm the current manufacturer documentation and local regulatory requirements before implementation.