Burette with Glass Stopcock – 50ml
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Product Code : SCL-CLE-12390
The StemAids 50ml Burette is a high-authority volumetric instrument engineered for definitive liquid dispensing in University, Research, and Vocational laboratories. Fabricated from Borosilicate 3.3 glass and compliant with ISO 385 standards, it features a precision-ground interchangeable glass stopcock for linear flow control. It is optimized for complex acid-base titrations requiring superior chemical resistance and metrological accuracy.
Technical Specifications
|
Tender Specification |
OEM Technical Detail |
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Material Grade |
Low-expansion Borosilicate 3.3 Glass |
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Capacity |
50ml |
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Stopcock Type |
Precision-ground interchangeable glass key |
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Calibration Standard |
Calibrated to Deliver (Ex) at 20°C |
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Accuracy Class |
Class AS / Class B Alignment |
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Graduation Type |
Permanent high-contrast ceramic enamel |
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Chemical Durability |
Class 1 Hydrolytic Resistance (ISO 719) |
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ISO Compliance Code |
ISO 385 (Laboratory glassware — Burettes) |
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HS Code |
7017.90 (Laboratory Glassware) |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
Feature: Precision-Ground Glass Stopcock Outcome: Facilitates student "Application" of micro-drop titration techniques, allowing for the precise determination of stoichiometric equivalence points.
Feature: Permanent High-Contrast Graduations Outcome: Supports the "Evaluation" of volumetric displacement and meniscus alignment, critical for the reduction of parallax and systematic measurement error.
Feature: Precision-Uniform Capillary Bore Outcome: Enables student "Analysis" of drainage constants and linear flow rates, ensuring mastery of standardized analytical laboratory protocols.
Feature: Chemically Inert Borosilicate 3.3 Matrix Outcome: Promotes "Understanding" of reagent integrity by eliminating ion-leaching variables during the handling of concentrated acids and aqueous alkalis.
International Logistics & Compliance
StemAids operates a specialized export-ready framework to maintain the structural and metrological integrity of precision glassware throughout the global supply chain:
Packaging: Export-grade seaworthy crating (ISPM-15 compliant) utilizing internal high-density longitudinal supports to protect the elongated glass shafts from vibrational stress and fracture.
Documentation: Includes Manufacturer’s Authorization Form (MAF), batch-specific Certificate of Conformity, and technical User Manuals in English.
Durability: Tropicalized design tested for operation in demanding climates (up to 45°C/90% Humidity), ensuring graduation markings remain chemically resistant and legible under intensive use.
Direct OEM Sourcing Advantages
Procurement via the StemAids vertical manufacturing channel provides institutional stakeholders with definitive factory-direct authority and technical assurance:
In-house Precision Calibration: Every burette undergoes rigorous gravimetric verification to ensure strict adherence to ISO 385 volumetric tolerances.
Vertical Quality Integration: Total oversight of the glass-forming and annealing cycles results in a low-strain glass matrix, significantly increasing the mechanical lifecycle of the instrument.
Batch-Tested for Uniform Reliability: Every production run is subjected to thermal-shock and pressure-resistance tests to meet the definitive standards required for international tenders.
Direct Factory Spares Availability: Guaranteed long-term availability of interchangeable glass stopcock keys and specific capacities to prevent laboratory downtime and ensure asset continuity.
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