Psychrophilic Bacterium Count Agar (MPC) | Dairy Microbiology Medium

Psychrophilic Bacterium Count Agar (MPC), also known as Milk Plate Count Agar, is a dehydrated culture medium formulated for the enumeration of psychrotrophic bacteria and aerobic spore-forming bacteria in dairy products.

This medium is widely used in dairy microbiology to evaluate microbial quality in milk, milk powder, and other dairy products stored under refrigerated conditions.
Its balanced formulation supports the growth of cold-tolerant microorganisms while providing reliable and reproducible colony development.

The inclusion of skim milk powder enhances suitability for dairy-related samples.
A slight white precipitate may appear after sterilization due to milk-derived components; this does not affect the performance of the medium.

🔬 Product Applications

• Enumeration of psychrophilic (psychrotrophic) bacteria in dairy products

• Total aerobic spore count in milk and dairy samples

• Dairy microbiology quality control

• Food safety and hygiene testing

• Refrigerated food microbial analysis

📦 Product Specifications

• Product Name: Psychrophilic Bacterium Count Agar (MPC)

• Alternative Name: Milk Plate Count Agar

• Form: Dehydrated powder

• Package Size: 250 g / bottle

• Storage Condition: Room temperature, dry and sealed

• Shelf Life: 3 years

🧾 Medium Composition (per liter)

• Tryptone – 5.0 g

• Yeast Extract – 2.5 g

• Glucose – 1.0 g

• Skim Milk Powder – 1.0 g

• Agar – 15.0 g

Final pH: 7.0 ± 0.1 (25 °C)

⚙️ Directions for Use

1. Suspend 24.5 g of the medium in 1 liter of distilled water.

2. Heat to boiling with stirring until completely dissolved.

3. Dispense into suitable containers.

4. Sterilize by autoclaving at 121 °C for 15 minutes.

5. Cool and pour plates as required.

Note: Minor white precipitate may appear after sterilization due to skim milk powder.