Nessler Cylinder
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Product Code : SCL-CLE-12370
The StemAids Nessler Cylinder is a high-authority analytical instrument engineered for quantitative colorimetric comparison and turbidity evaluation. Compliant with ISO 3585 and ASTM E438 Type I standards, these precision-bore Borosilicate 3.3 glass tubes feature optically plane bottoms to ensure a uniform optical path. Ideal for University and Vocational environmental monitoring, they provide definitive accuracy in ammonia and heavy metal concentration determination.
Technical Specifications
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Tender Specification |
OEM Technical Detail |
|
Material Grade |
Low-expansion Borosilicate 3.3 Glass |
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Base Configuration |
Optically Plane (Flat) Bottom for distortion-free viewing |
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Calibration Standard |
Class A / ISO 3819 Volumetric Alignment |
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Tolerance |
±0.4 ml (50 ml) / ±0.8 ml (100 ml) |
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Chemical Resistance |
Class S1 (Acid) / Class A1 (Alkali) per ISO standards |
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Graduation Type |
Permanent high-contrast white/blue ceramic enamel |
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ISO Compliance Code |
ISO 3585 / ASTM E438 Type I, Class A |
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HS Code |
7017.90 (Laboratory Glassware) |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
Feature: Optically Plane Bottom Geometry Outcome: Facilitates student "Analysis" of solute concentration by ensuring light passes through a uniform liquid column without refractive distortion.
Feature: Matched-Set Standardization Outcome: Supports the "Application" of comparative colorimetric methods (e.g., Nessler's Method) by minimizing path-length variables between samples and standards.
Feature: Chemically Inert Borosilicate 3.3 Outcome: Enables the "Evaluation" of aggressive reagents like Nessler's Reagent or potassium mercuric iodide without risk of ionic leaching or glass clouding.
Feature: Precision Graduation Marks Outcome: Promotes the "Understanding" of volumetric dilutions and Beer-Lambert Law principles through repeatable and verifiable meniscus alignment.
International Logistics & Compliance
StemAids utilizes a robust export framework to satisfy the rigorous technical requirements of international B2B procurement:
Packaging: Export-grade seaworthy crating (ISPM-15 compliant) utilizing bespoke internal high-density foam partitioning to protect fragile matched-set tubes from vibrational and impact stress.
Documentation: Consignments are accompanied by a Manufacturer’s Authorization Form (MAF), Certificate of Calibration (Class A verification), and Technical Data Sheets in English.
Durability: Tropicalized design tested for operational integrity in demanding climates (up to 45°C/90% Humidity), ensuring the glass matrix remains free from hydrolytic degradation during transit and storage.
Direct OEM Sourcing Advantages
Procurement via the StemAids vertical manufacturing channel provides definitive factory-direct authority and technical assurance:
In-house Precision Calibration: Every cylinder is batch-verified for vertical alignment and volumetric accuracy to maintain strict Class A compliance.
Vertical Integration: Total oversight of the glass-forming and annealing cycles results in a low-strain glass matrix, significantly extending hardware lifespan in intensive laboratory environments.
Batch-Tested for Uniform Reliability: Every production run undergoes chemical and thermal stress testing to meet the definitive standards required for international scientific tenders.
Direct Factory Spares Availability: Guaranteed long-term availability of specific matched-set replacements and specialized Nessler racks to eliminate laboratory downtime.
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