Gram Positive and Gram Negative Cell Wall Model Manufacturer,Supplier and Exporter in India
Product Code : EL-BE-6171
Jlab Export is a leading Gram Positive and Gram Negative Cell Wall Model Manufacturer,and suppliers in India
Gram Positive and Gram Negative Cell Wall Model (code EL-BE-6171) is a microbiology teaching model that compares the two basic types of bacterial cell wall, the difference that decides how a bacterium reacts to the Gram stain. It is used to explain staining results in class 11 biology, college microbiology and laboratory technology courses. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Topic | Comparison of Gram-positive and Gram-negative bacterial cell walls |
| Suggested for | Class 11 biology, college microbiology, medical laboratory technology and nursing courses |
| Quality check | Each model is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-BE-6171 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Gram Cell Wall Model Used For?
NCERT class 11 notes that bacteria are grouped as Gram positive or Gram negative according to their cell envelope and the way they respond to the staining method devised by Hans Christian Gram. The model makes that structural difference visible:
- Gram-positive wall — a thick, many-layered peptidoglycan wall threaded with teichoic and lipoteichoic acids, and no outer membrane. Examples: Staphylococcus, Streptococcus, Bacillus.
- Gram-negative wall — a thin peptidoglycan layer in the periplasmic space, covered by an outer membrane whose lipopolysaccharide (lipid A, the endotoxin, plus the O antigen) faces outwards, with porin channels for small molecules. Examples: Escherichia coli, Salmonella, Neisseria.
In the stain, crystal violet and iodine form a complex inside every cell. The alcohol or acetone decolouriser dissolves the outer membrane of Gram-negative cells and the dye washes out of their thin wall, so they take up the red safranin counterstain; the thick Gram-positive wall traps the complex and the cells stay purple. The same structures explain why lysozyme attacks Gram-positive walls more readily and why the outer membrane makes some Gram-negative bacteria harder to treat.
Frequently Asked Questions
Why do Gram-positive bacteria stay purple?
Their thick peptidoglycan wall holds the crystal violet–iodine complex during decolourising, while Gram-negative cells lose it and turn pink or red with safranin.
What does the model compare?
The two wall types, as its original listing title (Comparison of Gram Positive and Gram Negative Cell Wall Model) states. Labels, size and material are not listed — ask JLab for a description and photo.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a microbiology and biology teaching-aid manufacturer in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The model is produced in JLab’s own works, not resold from a trader, so colleges, schools, dealers and importers order factory-direct. JLab exports worldwide and ships to buyers in every region — for example Bahrain in the Middle East, Spain in Southern Europe, Gabon in Central Africa, Lithuania in Northern Europe and Poland in Eastern Europe.
For the Gram Staining Practical
- Bacteria Cell and Cell Wall Model — the whole bacterial cell and its envelope.
- Microbiology and Genetics Prepared Slide — includes two Gram-stained bacteria slides.
- Bacteria Slide Set — a set of 12 slides listing Gram-positive and Gram-negative cocci and bacilli.
- Slide Staining Rack — holds several slides together in a staining dish.
More staining and microbiology lab equipment is listed under Biology Equipment and Biology Lab Equipment.
Request a Quote
Use Add To Cart, or send the quantity (minimum 10 units) and delivery details through the contact page; the quote comes straight from the manufacturer.
Last updated: 4 October 2026
