Plot No. C40, Road No. 21Y, MIDC, Wagle Industrial Estate,
Thane(W)-400604, MH, India.
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Intended Use
Recommended for total bacterial count and screening urine bacteria.
Composition**
Plate Count Agar
| Ingredients | g / L |
|---|---|
| Tryptone | 5.000 |
| Yeast extract | 2.500 |
| Dextrose (Glucose) | 1.000 |
| Agar | 15.000 |
| Final pH (at 25°C) | 7.0±0.2 |
MacConkey Agar w/ 0.15% Bile salts, CV and NaCl
| Ingredients | g / L |
|---|---|
| Gelatin peptone | 17.000 |
| Tryptone | 1.500 |
| Peptone | 1.500 |
| Lactose | 10.000 |
| Bile salts | 1.500 |
| Sodium chloride | 5.000 |
| Neutral red | 0.030 |
| Crystal violet | 0.001 |
| Agar | 15.000 |
| Final pH (at 25°C) | 7.1±0.2 |
**Formula adjusted, standardized to suit performance parameters
Directions
- Surfaces: Loosen cap and remove HiDip™ slide from container taking care not to touch agar surfaces. Check for dehydration or contamination. Gently lower the slides and press agar to touch the test surface by bending the scull around the hinge line. Apply even and firm pressure for 15-20 seconds. Take care not to smudge agar over the test surface. Repeat procedure using the second agar surface on an area adjacent to the initial test side. Return the slide to the container and close tightly. Incubate in an up right position at indicated temperature.
- Liquids: Loosen cap and remove the HiDip™ slide from container. Check for dehydration or contamination. Dip slide into test fluid for upto 15-20 seconds so that agar surface becomes totally covered. (In case of inadequate liquid sample availability, pour sample over the surface of the slide). Allow to drain. Tab it gently to remove excess fluid from surface. Return the slide to the container and close tightly. Incubate in an upright position at indicated temperature. Label the container for sample number, source, date and time etc. for reference.
Principle And Interpretation
Plate Count Agar is recommended for the plate count of microorganisms in foods, water and waste water. It is also recommended by APHA, FDA and also by ISO Committee.
MacConkey Agar is a differential medium for the selection and recovery of the Enterobacteriaceae and related enteric gram-negative bacilli. This medium is prepared in accordance with USP and contains crystal violet, Nacl and bile salts. It is very selective and suppresses growth of a number of gram-positive bacteria including Staphylococci.
Type of specimen
Clinical sample : Urine; Food and dairy samples, Water samples.
Specimen Collection and Handling
Refer Directions.
Warning and Precautions
In Vitro diagnostic use only. For professional use only. Read the label before opening the container. Wear protective gloves/protective clothing/eye protection/face protection. Follow good microbiological lab practices while handling specimens and culture. Standard precautions as per established guidelines should be followed while handling clinical specimens. Safety guidelines may be referred in individual safety data sheets.
Limitations
Plate Count Agar
- This medium is general purpose medium and may not support the growth of fastidious organisms.
MacConkey Agar w/ 0.15% Bile salts, CV and NaCl
- Though the medium is recommended for selective isolation, further biochemical and serological testing must be carried out for further confirmation.
Performance and Evaluation
Performance of the medium is expected when used as per the direction on the label within the expiry period when stored at recommended temperature.
Quality Control
Appearance: The HiDip™ slide containing a combination of sterile PCA Medium and MacConkey Medium on separate individual surfaces.
Colour:
Colour of Plate Count Agar: Light yellow coloured medium
Colour of MacConkey Agar: Reddish purple coloured medium
Quantity of medium: 2.5 ml per surface
Sterility Check: Passes release criteria
pH of Plate Count Agar: pH Range: 6.80-7.20
pH of MacConkey Agar: pH Range : 7.20-7.60
Cultural Response
Cultural characteristics was observed after incubation at 35-37°C for of 18-24 hours.
| Organism | Growth | Colour of colony |
|---|---|---|
| PCA Medium | ||
| ** Bacillus spizizenii ATCC 6633 (00003*) | luxuriant | Red to Maroon |
| Enterococcus faecalis ATCC 29212 (00087*) | luxuriant | Red to Maroon |
| Escherichia coli ATCC 25922 (00013*) | luxuriant | Red to Maroon |
| Lactobacillus casei ATCC 9595 | luxuriant | Red to Maroon |
| Staphylococcus aureus subsp. aureus ATCC 25923 (00034*) | luxuriant | Red to Maroon |
| Streptococcus pyogenes ATCC 19615 | luxuriant | Red to Maroon |
| # Klebsiella aerogenes ATCC 13048 (00175*) | luxuriant | Red to Maroon |
| Salmonella Enteritidis ATCC 13076 (00030*) | luxuriant | Red to Maroon |
| MacConkey Agar | ||
| Escherichia coli ATCC 25922 (00013*) | luxuriant | pink to red with bile precipitate |
| # Klebsiella aerogenes ATCC 13048 (00175*) | luxuriant | pink to red |
| Enterococcus faecalis ATCC 29212 (00087*) | fair to good | colourless to pale pink |
| Staphylococcus aureus subsp. aureus ATCC 25923 (00034*) | inhibited | - |
| Salmonella Enteritidis ATCC 13076 (00030*) | luxuriant | colourless |
| Salmonella Paratyphi B ATCC 8759 | luxuriant | colourless |
| ## Proteus hauseri ATCC 13315 | luxuriant | colourless |
| Shigella flexneri ATCC 12022 (00126*) | fair to good | colourless |
Key :- * Corresponding WDCM numbers
**Formerly known as Bacillus subtilis subsp. spizizenii
# Formerly known as Enterobacter aerogenes
## Formerly known as Proteus vulgaris
Storage and Shelf Life
On receipt store between 15-30°C. Use before expiry date on the label. Product performance is best if used within stated expiry period.
Disposal
Used HiDip™ slides should be handled carefully, as it contains live microorganisms. These slides can be best disposed off either by or by immersing in a suitable disinfectant solution (i.e. dettol, phenyl etc.) over night or by autoclaving them after loosening the cap.
| Product Name | HiDip™ PCA - MacConkey Agar Medium |
|---|---|
| SKU | HD021 |
| Customized Product Available | No |
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