Nessler Cylinder
Product Code : SCL-CLE-11912
The StemAids Nessler Cylinder is a precision-engineered glass tube designed for colorimetric analysis and the visual comparison of liquid samples against known standards. Unlike standard graduated cylinders, Nessler cylinders feature optically flat, polished bottoms and uniform wall thickness to ensure a consistent light path. Manufactured to ISO 9001:2015 and ISO 385 standards, they are essential for Water Quality Testing, Environmental Monitoring, and Clinical Biochemistry.
Technical Specifications
|
Tender Specification |
OEM Technical Detail |
|
Material |
Grade A Borosilicate Glass 3.3 (High Optical Clarity) |
|
Design |
Tall, narrow profile with a precision-ground, optically flat base |
|
Capacities |
50ml and 100ml (Matched sets available) |
|
Graduation |
Permanent white enamel markings (Single or double rings) |
|
Base Type |
Optically clear flat bottom for vertical light transmission |
|
Stopper (Optional) |
Ground-glass interchangeable stopper or PE cap |
|
Chemical Resistance |
Inert to most reagents used in colorimetric assays |
|
ISO Compliance |
Manufactured under ISO 9001:2015 Quality Management Systems |
Key Pedagogical & Laboratory Outcomes
- Colorimetric Interface: Facilitates the understanding of Beer-Lambert's Law (qualitative). Learners identify how the intensity of color correlates with the concentration of a solute when viewed through the depth of the liquid.
- Trace Quantification: Enables the detection of low-level impurities; learners apply the cylinders to detect substances like Ammonia, Iron, or Manganese in water samples by comparing them to standardized color solutions.
- Sensitivity Analysis: Supports the analysis of "Detection Limits"; students evaluate how the tall, narrow column of liquid provides a longer light path than a test tube, significantly increasing the sensitivity of the visual check.
- Standardization Evaluation: Allows students to evaluate sample purity; by using "matched sets" (cylinders with identical glass height and thickness), students ensure that variations in color are due to the chemical concentration and not the vessel geometry.
International Logistics & Compliance
StemAids ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade, high-protection packaging. Cylinders are often sold in matched pairs or sets of 6/12 and are nested in shock-absorbent foam to protect the delicate polished bases.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and a guide for visual colorimetry.
- Durability: The Borosilicate 3.3 glass is resistant to "yellowing" over time, ensuring that the optical clarity remains constant throughout the product's lifespan.
Direct OEM Sourcing Advantages
Procuring StemAids Nessler Cylinders directly ensures vertical manufacturing control:
- Optically Flat Bases: Direct oversight of the base-polishing process ensures zero distortion of light, which is critical for accurate color matching when viewing the cylinder from above.
- Matched Set Calibration: We ensure that every cylinder in a set has the graduation mark at the exact same height from the base, eliminating volume-induced color discrepancies.
- Direct Factory Inventory: Guaranteed availability of the standard 50ml and 100ml sizes, as well as compatible Nessler Cylinder Racks (white-based to facilitate viewing).
- Quality Assurance: Every batch is inspected for "wall-thickness uniformity" to ensure that refractive errors do not interfere with the student's visual analysis.