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CAG Company Bacteriological Agar Quality Standard: A Glimpse into Our Benchmarks

CAG Company Bacteriological Agar Quality Standard: A Glimpse into Our Benchmarks

Maintaining the highest purity and performance in bacteriological agar is crucial for reliable microbiology results. At CAG, we adhere to stringent, transparent quality standards. Here’s a look at our key testing parameters:


I. Physicochemical Specifications

Parameter

Specification

Moisture

≤ 5%

Turbidity (NTU)

≤ 8

Gel Strength

900–1000 g/cm²

pH

6.0–7.5

Stability at 48°C (4 hours) water bath

No gel formation or flocculation

Heat-Resistant Bacteria Test (55°C, 72 hours)

No growth of thermophilic bacteria

Phosphate Precipitation Test

No precipitation



Sterilization Operation           Heat-Resistant Bacteria Test (55°C, 72 hours) ( Failed Sample )

Stability at 48°C (4 hours) water bath  ( Failed Sample )  Phosphate Precipitation Test  ( Failed Sample )


II. Microbiological Performance

Test Strain

Acceptance Criteria

Escherichia coliATCC 25922

Pass

Staphylococcus aureusATCC 6538

Pass

Pseudomonas aeruginosaATCC 27853

Colonies must be round, regular, and show no spreading

Bacillus subtilisATCC 6633

Pass

Streptococcus pneumoniaeCMCC(B) 31001

Pass

Beta-hemolytic StreptococcusATCC 21059

Colonies must be uniform in size

Candida albicansCMCC(F) 98001

Pass







Why This Matters:

  • Consistency – Tight control of gel strength and pH ensures reproducible media performance.

  • Clarity – Low turbidity provides better visibility for colony observation.

  • Stability – No gelling or flocculation at 48°C confirms excellent thermal stability.

  • Microbiological Purity – Rigorous testing against key ATCC strains ensures reliable growth without interference.

This is how we support labs in achieving accurate, dependable microbial results—batch after batch.

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