Product Description: Whatman Filter Papers 18.5 CM – Grade-1 Qualitative
Whatman Filter Papers 18.5 CM – Grade-1 Qualitative are high-quality qualitative laboratory filter papers designed for routine filtration, sample preparation, precipitate separation, and general laboratory applications. These circular filter papers provide a reliable filtration medium for separating solid particles from liquids during various laboratory procedures.
The Whatman Grade 1 Qualitative Filter Papers 18.5 CM are made from high-purity cellulose and provide consistent filtration performance for routine qualitative analysis. Their uniform structure helps retain particles and precipitates effectively while allowing the liquid phase to pass through during filtration.
With an 18.5 CM diameter, these circular filter papers offer a practical filtration area for various laboratory applications. They can be conveniently folded and used with suitable laboratory funnels and compatible filtration equipment.
The product contains 100 circular filter papers per pack and is identified by Cat No. 1001 185, making it convenient for regular laboratory use and reordering.
Product Specifications
| Specification | Details |
|---|---|
| Product Name | Whatman Filter Papers 18.5 CM |
| Brand | Whatman |
| Grade | Grade 1 |
| Filter Type | Qualitative Filter Paper |
| Diameter | 18.5 CM |
| Pack Quantity | 100 Circles |
| Cat No. | 1001 185 |
| Shape | Circular |
| Material | Cellulose |
| Color | White |
| Application | Routine Laboratory Filtration & Qualitative Analysis |
Key Features
- 18.5 CM Diameter – Suitable for a wide range of laboratory filtration applications.
- Grade 1 Qualitative Filter Paper – Designed for routine filtration and qualitative analysis.
- High-Quality Cellulose – Provides a dependable filtration medium.
- 100 Circles per Pack – Convenient for regular laboratory use.
- Circular Design – Easy to fold and use with suitable laboratory funnels.
- Consistent Filtration – Helps separate solid particles and precipitates from liquids.
- Easy Handling – Convenient to fold, position, use, and dispose of.
- Wide Applications – Suitable for chemistry, biology, pharmaceutical, environmental, food testing, educational, and research laboratories.
Typical Applications
Whatman Filter Papers 18.5 CM can be used for:
- Routine laboratory filtration
- Qualitative chemical analysis
- Precipitate separation
- Solution clarification
- Sample preparation
- Chemistry experiments
- Biology laboratory applications
- Pharmaceutical research
- Environmental testing
- Water analysis
- Food testing
- Educational laboratory experiments
- Industrial quality control
- Research and development

Frequently Asked Questions (FAQ)
1. What are Whatman Filter Papers 18.5 CM?
They are Grade 1 qualitative cellulose filter papers designed for routine laboratory filtration, sample preparation, and qualitative analysis.
2. What is the diameter of Whatman Filter Papers 18.5 CM?
The diameter of each circular filter paper is 18.5 CM.
3. What is the grade of this filter paper?
This product is Grade 1 Qualitative Filter Paper.
4. How many filter papers are included in one pack?
Each pack contains 100 circular filter papers.
5. What is the Cat No. of this product?
The Cat No. is 1001 185.
6. What material are these filter papers made from?
These qualitative filter papers are made from cellulose.
7. What are Whatman Filter Papers 18.5 CM used for?
They are suitable for routine filtration, precipitate separation, solution clarification, sample preparation, and qualitative laboratory analysis.
8. Can these filter papers be used with laboratory funnels?
Yes. The circular 18.5 CM filter papers can be folded and used with suitable laboratory funnels.
9. Are these filter papers suitable for qualitative analysis?
Yes. Grade 1 qualitative filter papers are designed for routine laboratory filtration and qualitative analytical procedures.
10. Are Whatman Filter Papers 18.5 CM reusable?
Filter papers are generally intended for single-use filtration applications. Reuse is not recommended when contamination-free or reliable analytical results are required.
11. What types of samples can be filtered using these papers?
They can be used for various laboratory liquid samples, solutions, suspensions, and mixtures where routine solid-liquid separation is required.
12. Are these filter papers suitable for educational laboratories?
Yes. They are suitable for schools, colleges, universities, teaching laboratories, research laboratories, and training facilities where routine filtration is required.
13. Can these filter papers be used for sample preparation?
Yes. They can be used for general sample preparation and solution clarification before further laboratory procedures.
14. What is the shape of Whatman Filter Papers 18.5 CM?
They are supplied as circular filter papers, which can be folded into a suitable shape for funnel filtration.
15. Where can I buy Whatman Filter Papers 18.5 CM in Bangladesh?
M/S Bright Scientific Co. supplies laboratory filter papers and scientific products across Bangladesh.
Phone: +880 1711285976
Conclusion
Whatman Filter Papers 18.5 CM – Grade-1 Qualitative are practical and reliable filter papers for routine laboratory filtration and qualitative analysis. With an 18.5 CM diameter, Grade 1 quality, circular design, cellulose construction, and 100 circles per pack, they are suitable for various laboratory, research, educational, environmental, pharmaceutical, and industrial applications.








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