Introduction
The document introduces the DURAN® laboratory glassware range by DWK Life Sciences, emphasizing its quality and reliability. It features over 3,000 products, including award-winning designs like the DURAN® YOUTILITY and TILT bottles.
DWK Life Sciences Overview
DWK Life Sciences combines the expertise of DURAN®, WHEATON®, and KIMBLE® brands, offering over 30,000 products globally. The company focuses on precision, creativity, and trust, serving industries such as pharmaceuticals and life sciences.
DURAN® Brand and Quality
DURAN® is known for its high-quality borosilicate 3.3 glass, offering chemical resistance, thermal stability, and transparency. Products meet DIN/ISO standards and are suitable for pharmaceutical use, with a quality management system certified to ISO standards.
Laboratory Glass Bottles and Accessories
DURAN® laboratory glass bottles are versatile and durable, featuring standardized GL-thread systems, chemical resistance, and thermal shock resistance. They are ideal for autoclaving and dry sterilizing, with features like easy labeling and a Retrace Code for traceability.
Product Specifications
The catalog provides detailed specifications for laboratory glass bottles, including capacity, dimensions, and packaging units. Products are available with or without screw caps and pouring rings, with some models offering high-temperature closures.
Conclusion
DWK Life Sciences invites customers to explore their comprehensive range of laboratory glassware, emphasizing their commitment to quality and innovation.
Specifications
The document details specifications for laboratory bottles and accessories, focusing on DURAN® products. These include large-sized bottles made from Type 1 borosilicate 3.3 glass, suitable for bulk storage and handling of liquids and solids, conforming to pharmacopoeia standards.
Procedures and Applications
The document outlines the use of DURAN® GLS 80® bottles with various caps and connection systems for pressure equalization, sterile transfer, and mixing processes. Applications include storage and transport of gas-generating media and simple fermentation processes.
Norms and Standards
The glass used meets USP, EP, and JP standards. Amber-colored bottles comply with USP <660> and USP <671> standards for spectral transmission.
Recommendations
Recommended for storing aggressive media due to chemical resistance. Caution advised when using glass stoppers with soda-lime glass bottles due to potential sticking if temperature differences exceed 30°C.
Key Data from Tables
Includes detailed tables listing product specifications such as capacity, neck diameter, height, and packaging units for various DURAN® bottles and accessories.
Specifications
The document outlines temperature resistance and specifications for DURAN® laboratory glass bottles and caps, compliant with USP <660> and USP <671> standards, offering UV protection up to 500 nm.
Product Features
DURAN® bottles are durable and versatile, suitable for multiple applications including HPLC. They provide UV protection, vacuum and pressure resistance, and are ideal for storage and transport.
Materials and Construction
Caps are made from materials like polypropylene and polybutylene terephthalate, offering good chemical resistance and are autoclavable.
Applications and Advantages
The wide mouth design of GLS 80® bottles allows easy access, and the quick release closure permits easy opening and closing.
General Laboratory GlasswareDURAN® glassware, including boiling
flasks and beakers, has excellent thermal-shock resistance and high operating temperatures.
Product Overview
The document provides detailed information about various laboratory glassware products offered by DURAN®, including beakers, Erlenmeyer flasks, measuring cylinders, and boiling flasks.
Specifications and Features- DURAN® glassware is known for its uniform wall thickness, making it suitable for high-temperature changes.
- SUPER DUTY products feature reinforced rims for enhanced mechanical strength.
- Beakers and flasks come with a retrace code for batch and quality certification.
Product Categories- Beakers: Available in low and high forms, with or without spouts, and in various capacities.
- Erlenmeyer Flasks: Offered in narrow and wide neck designs, suitable for mixing liquids and heating applications.
- Measuring Cylinders: Class B with graduation and hexagonal base.
- Boiling Flasks: Include round and flat bottom designs, suitable for uniform heating and distillation processes.
Usage Recommendations- Products are not suitable for volumetric measurements due to scale accuracy limitations.
- SUPER DUTY products should be heated uniformly and slowly to prevent breakage from thermal stress.
Key Data from Tables
Includes detailed tables listing product specifications such as catalog numbers, capacities, dimensions, and packaging units for each type of glassware.
Overview
The document provides detailed specifications and descriptions of various laboratory glassware products, primarily focusing on DURAN® products.
Specifications
Outlines specifications for each product, including dimensions, capacity, material, and compliance with standards such as ASTM D86, DIN EN ISO 3405, and USP <31>.
Procedures and Standards
Emphasizes compliance with various standards for accurate measurements and safe laboratory practices.
Recommendations
Includes using glass ceramic plates for heating applications and selecting appropriate NMR tubes based on resonant frequency.
Key Data from Tables
Contains numerous tables listing product specifications such as catalog numbers, dimensions, capacities, and packaging units.
Critical Information
Highlights the importance of precise grinding for tight seals in specimen jars and compliance with waiting times for accurate volumetric measurements.
Volumetric Glassware Overview
Provides detailed specifications and classifications for various types of volumetric glassware, including pipettes and burettes, used for precise liquid measurement and decanting.
Specifications and Calibration
All glassware is calibrated to measure and discharge a single volume ('Ex') at a reference temperature of +20°C.
Types of Glassware- Measuring Pipettes: Available in various capacities, designed for accurate liquid measurement.
- Full and Bulb Pipettes: Calibrated for single-volume discharge.
- Burettes: Used primarily for titrations, available with Schellbach stripes.
Product Range and Features
Lists various product codes, capacities, and specifications for each type of glassware.
Applications
Primary applications include accurate measurement and decanting of liquids, as well as titrations in laboratory settings.
Chemical Resistance at +20°C
Materials such as alcohols, aldehydes, alkaline solutions, esters, ketones, and both dilute and concentrated acids show varying levels of resistance.
DURAN® Volumetric Flasks
Includes clear and amber volumetric flasks with PE stoppers, available in Class A and Class B accuracy.
DURAN® Measuring and Mixing Cylinders
Available in Class A and Class B accuracy, made from DURAN® glass.
Bulb and Measuring Pipettes
Made from soda-lime glass, available in Class AS and Class B accuracy.
DURAN® Burettes
Available in Class AS and Class B accuracy, made from DURAN® glass.
Interchangeable Glassware
Offers a range of interchangeable glassware suitable for various laboratory applications.
Overview
Provides detailed specifications and applications for various DURAN® laboratory glassware products, including dropping funnels, separating funnels, stirrer bearings, vacuum receiver adapters, and filtration apparatus.
Dropping Funnels
Available in cylindrical shapes with scales and ground joints.
Separating Funnels
Available in conical and spherical shapes, designed for phase separation.
Stirrer Bearings and Shafts
Interchangeable and feature ground and polished bearing surfaces.
Vacuum Receiver Adapters
Available in bent and straight designs, with standard ground joints.
Filtration Apparatus
Designed for high chemical and thermal resistance, suitable for separations involving strong acids or alkalis.
Usage Tips
Advises on maximum permissible operating temperature and uniform heating to avoid thermal stress.
Overview
Provides detailed specifications and applications for various DURAN® glass filtration apparatus and accessories, emphasizing their use in vacuum filtration and gas washing processes.
Key Sections- Specifications: Lists various DURAN® products, including filtering flasks, filter apparatus, water jet pumps, and filter funnels.
- Procedures and Applications: Primarily used for vacuum filtration and gas washing.
- Standards and Safety: Conform to equipment and product safety regulations.
- Recommendations: Use of DURAN® pressure plus+ bottles is recommended for enhanced performance.
- Accessories: Various accessories such as KECK™ assembly sets, rubber gaskets, and filter adapters are available.
Data Summary
Includes tables with detailed measurements and specifications for each product.
Overview
Provides detailed specifications and applications for various DURAN® glass filtration apparatus, accessories, and desiccators.
1. Glass Filtration Apparatus and Accessories- Filter Disks: Used for extracting clear filtrate.
- Micro Immersion Filters: Designed for reverse filtration.
- Filter Candles: Available with or without tubes.
- Funnels: Various types including micro filter funnels, powder funnels, and analytical funnels.
2. Desiccators- Vacuum Desiccators: Made from DURAN® borosilicate glass, suitable for drying moist substances.
- Desiccator Bases and Lids: Available in various designs.
3. Glassware for Microbiology- Petri Dishes: Made from DURAN® borosilicate glass, offering high transparency.
- Baffled Flasks: Designed to increase gas exchange and oxygen uptake.
Key Features- High thermal shock and chemical resistance.
- Compatibility with various accessories and interchangeable parts.
- Designed for specific applications such as filtration, drying, and microbiological research.
Introduction to Glass Formation
Glass-forming products exhibit a tendency towards amorphous networking through polymerization in the molten state.
What is DURAN®?
DURAN® is a type of borosilicate glass known for its high chemical resistance, minimal thermal expansion, and high thermal shock resistance.
Chemical Composition and Properties
DURAN® consists of approximately 81% SiO2, 13% B2O3, 4% Na2O/K2O, and 2% Al2O3.
Hydrolytic and Acid Resistance
DURAN® meets Class 1 hydrolytic resistance standards and Class 1 acid resistance.
Alkali Resistance
DURAN® is classified as Class 2 for alkali resistance.
Physical Properties
DURAN® can withstand temperatures up to 500°C and has a low coefficient of linear expansion.
Optical Properties
DURAN® is clear and colorless, with low absorption in the spectral range from 310 to 2200 nm.
Conformity with Standards
DURAN® complies with DIN ISO 3585 and other international standards.
Cleaning and Maintenance
DURAN® glassware should be cleaned immediately after use with low alkalinity detergents.
Specifications and Features
Miele washer-disinfectors are designed for the effective cleaning, rinsing, disinfection, and drying of laboratory glassware.
Reprocessing Phases
The reprocessing cycle includes pre-wash, intermediate rinse, final rinse, drying, acidic neutralization, and alkaline cleaning.
Program Types
Programs are tailored for different residue types and glassware conditions.
Analysis Purity and Process Reliability
Conductivity measurement modules ensure analysis purity.
Economy and Value Retention
Machine-based reprocessing is more efficient than manual cleaning.
Sterilization and Safety Instructions
DURAN® glassware is suitable for autoclaving, hot air, and plasma sterilization.
Disposal and Environmental Considerations
DURAN® glass should not be disposed of in domestic recycling streams.
Further Processing and Labelling
DURAN® glass can undergo further processing, such as adding screw threads or joints.
Conclusion
DWK Life Sciences recommends Miele washer-disinfectors for their reliability and efficiency in laboratory glassware preparation.
Specifications
DURAN® laboratory bottles are chemically resistant and stable, available with various screw caps and pouring rings.
Procedures
For sterilization, screw caps should be loosely fitted to prevent pressure build-up.
Recommendations
DURAN® bottles are generally not suitable for pressure or vacuum use.
Technical Information
Filtering flasks are vacuum tight, and DURAN® SUPER DUTY products offer enhanced mechanical stability.
Product-Specific Information
Centrifuge tubes are approved for specific centrifugal forces.
Accessories
Flat flange vessels can be sealed with O-rings for pressure applications.
Specifications
DURAN® filtration products are made from borosilicate glass 3.3, known for its high chemical and thermal-shock resistance.
Filtration Apparatus
The DURAN® filtering apparatus is versatile, suitable for various chemicals.
Recommendations
The apparatus supports coarse, fine, and analytical filtration.
Porosity and Flow Rate
Porosity is measured using the Bechhold bubble pressure method.
Care and Cleaning
To avoid glass breakage, adhere to guidelines on thermal stresses.
Screwfilters
DURAN® screwfilters offer interchangeable filter disks.
Volumetric Products
DURAN® volumetric products are available in accuracy classes A/AS and B.
Specifications
The document discusses the specifications of DURAN® burettes and pipettes, highlighting their compliance with DIN and ISO standards.
Procedures
Measurement and bulb pipettes are made from soda-lime glass and are used for precise liquid measurement and filling.
Recommendations
To ensure the longevity of volumetric glassware, it should not be heated above +180°C for soda-lime glass.
Glass-Ceramic Laboratory Protection Plates
These plates are suitable for heating glassware with a Bunsen burner.
Additional Information
Provides further information about DURAN® laboratory glassware, including protective caps and documentation.
Claims for Compensatory Damages; Limitation of Liability
Liability for damages is limited to cases of willful conduct or gross negligence.
Non-binding Nature of Drawings, Diagrams, Measurements, and Weights
These are approximate unless explicitly stated as binding.
Reservation of Title
Title to goods remains with the seller until full payment is received.
Return of Goods
Returns are at the seller's discretion and must meet specific conditions.
Applicable Law and Judicial Forum
German law applies, excluding conflict of law rules and the UN-CISG.
Moulds and Tools
Moulds and tools remain the seller's property.
Pictograms and Standards
Products are marked with various pictograms indicating features like maximum usage temperature and compliance with international standards.