A result becomes defensible only when the observation, control response, timing, and confirmation decision are recorded together. This guide uses the manufacturer IFU for catalogue 610392 as its technical anchor and translates it into practical review questions for professional laboratories.
Start with the product’s documented role
Acetamide Broth is a liquid medium used for confirmation of Pseudomonas aeruginosa with the membrane filtration
Review Liofilchem Acetamide Broth ISO 16266 Culture Media 610392 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.
Procedure points worth controlling
Filter volumes of diluted or undiluted water sample through 0.45 µm sterile membranes. Place each membrane on a plate of Pseudomonas CN agar and incubate at 36 ± 2°C for 40-48 hours. Count all colonies that produce blue/green (pyocyanin) color as confirmed P. aeruginosa. Acetamide Broth is used for confirming fluorescent non-pyocyanin producing colonies and reddish brown pigmented colonies: •Transfer all colonies to Nutrient agar and incubate at 36 ± 2°C for 20-24 h; •Inoculate a tube of Acetamide broth with the subculture and incubate at 36 ± 2°C for 20-24 h; •Add 1-2 drops of Nessler's Reagent and examine for production of ammonia.
Read and document the result
The formation of a yellow to brick red color indicates ammonia production. A negative reaction shows no color change. Other confirmatory tests, such as Oxidase Test and King’s B Medium may be required.
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. Store tubes at 2-8°C away from light. Do not use the product beyond its expiry date on the label or if product shows any evidence of contamination or any sign of deterioration.
Safety and professional-use reminder
For professional use only. Operators must be trained and have certain experience. Please read the instructions carefully before using this product. Reliability of assay results cannot be guaranteed if there are any deviations from the instructions in this document. Consult the Safety Data Sheet (SDS) for information regarding hazards and safe handling practices.
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.