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Flat Bottom Flask, Single Neck with Joint
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Flat Bottom Flask, Single Neck with Joint

The Flat Bottom Flask, Single Neck with Joint by Edulabs is a versatile laboratory heating and reaction flask designed for safe placement on flat surfaces. Constructed from ASTM E-438 Type 1, BORO 3.3 heat-resistant glass, this flask is manufactured in compliance with ASTM E-1403 Type 1 specifications. It features a flat base that allows self-standing stability on benchtop stirrers and hot plates without requiring support rings. Equipped with a precision ground glass socket joint at the single neck, it forms vapor-tight, leak-proof connections with condensers, distillation columns, and adapters. Resistant to aggressive acids, solvents, and thermal shock, it is ideal for organic synthesis, solvent distillation, extraction, and reagent boiling. Available in volume options from 25 ml up to 20,000 ml with standardized joint options. Supplied by Edulabs.

Storage Instructions

  • Store on flat shelves, padded cupboards, or dedicated laboratory storage trays.

  • Protect the single ground socket with plastic caps or protective wrapping during storage.

  • Ensure the flat base and ground joint are clean and free of chemical residue prior to long-term storage.

  • Keep stored in a dry, vibration-free environment away from high-traffic lab areas.

  • Avoid crowding or contact with neighboring glass items to prevent impact fractures.

  • Organize inventory systematically by capacity size and socket dimensions.

Safety Information

  • Wear personal safety equipment, including protective goggles, heat-resistant gloves, and a lab coat.

  • Inspect the ground socket joint and flat base for scratches or micro-cracks before heating.

  • Apply a thin film of chemical-resistant joint grease or use PTFE sleeves to avoid joint freezing.

  • Ensure stable positioning on flat hot plates or magnetic stirrer plates before heating.

  • Maintain proper system venting through a condenser or adapter to prevent internal pressure buildup.

  • Avoid placing heated flat-bottom flasks directly into cold liquid baths to protect against thermal shock.

  • Use supportive lab clamps when connecting heavy distillation columns to high-capacity flasks.

  • Decontaminate and wash chemical residue from the glass surface immediately following procedures.

Categories: ,

The Flat Bottom Flask, Single Neck with Joint manufactured by Edulabs is an essential piece of laboratory glassware designed for heating, chemical mixing, distillation, and solvent recovery workflows. A key practical benefit of the flat bottom geometry is self-standing stability. Unlike round-bottom flasks that require cork rings or continuous clamping support, this flask rests securely on flat laboratory workbenches, magnetic stirrers, and hot plates, making sample preparation and reagent handling convenient.

Fabricated in strict compliance with ASTM E-1403 Type 1 specifications, this flask is built from high-grade BORO 3.3 borosilicate glass meeting ASTM E-438 Type 1 standards. The material’s low coefficient of thermal expansion ensures high resistance to thermal shock during gradual heating and cooling cycles. Furthermore, its chemical inertness protects against corrosion caused by aggressive organic solvents, concentrated acids, and alkaline solutions, preserving the purity of experimental samples.

The single neck is fitted with a precision ground glass socket joint that conforms to standardized interchangeable dimensions. This joint allows airtight, leak-proof connections to glass condensers, reflux columns, dropping funnels, and vacuum adapters without requiring rubber stoppers, which could leach impurities into organic reaction mixtures.

Available in a range of capacities from 25 ml for analytical micro-scale operations up to 20,000 ml for large-scale solvent processing, the Edulabs Flat Bottom Jointed Flask offers versatile socket joint configurations (including 14/23, 19/26, 24/29, 29/32, 34/35, 45/50, and 55/44). Edulabs combines precision engineering, safety compliance, and material quality for modern research, educational, and industrial laboratories.

Key Features

  • Crafted from ASTM E-438 Type 1, BORO 3.3 heat-resistant borosilicate glass.

  • Manufactured in accordance with ASTM E-1403 Type 1 specifications.

  • Flat bottom geometry provides self-standing stability on lab benches, hot plates, and stirrers.

  • Single ground glass socket joint creates a vapor-tight seal with modular glass assemblies.

  • High resistance to thermal shock and sudden temperature transitions.

  • Exceptional chemical resistance to strong acids, alkalis, and organic solvent vapors.

  • Eliminates contamination risks associated with rubber or cork stoppers.

  • Smooth interior glass surfaces ensure easy cleaning and minimal liquid retention.

  • Compatible with standard heating plates and magnetic stirring setups.

  • Comprehensive selection of capacities from 25 ml up to 20,000 ml with diverse joint sizes.

Technical Specifications

Parameter Specification
Product Name Flat Bottom Flask, Single Neck with Joint
Material BORO 3.3 Borosilicate Glass (ASTM E-438 Type 1)
Standard ASTM E-1403 Type 1 Specifications
Capacity Options 25 ML to 20000 ML
Joint Sizes 14/23, 19/26, 24/29, 29/32, 34/35, 45/50, 55/44
Neck Configuration Single Neck with Ground Socket Joint
Chemical Resistance High resistance to organic solvents, acids, and bases
Thermal Shock Resistance High thermal shock resistance
Application Distillation, Refluxing, Solvent Storage, Chemical Reactions
Grade Laboratory Grade

Available Models

Item Code Capacity (ml) Socket Size Height mm Diameter mm pack
SL.FB039 25 ML 14/23 85 41 10
SL.FB040 25 ML 19/26 85 41 10
SL.FB041 25 ML 24/29 85 41 10
SL.FB042 50 ML 14/23 90 51 10
SL.FB043 50 ML 19/26 90 51 10
SL.FB044 50 ML 24/29 90 51 10
SL.FB045 50 ML 29/32 90 51 10
SL.FB046 100 ML 14/23 105 64 10
SL.FB047 100 ML 19/26 105 64 10
SL.FB048 100 ML 24/29 105 64 10
SL.FB049 100 ML 29/32 105 64 10
SL.FB050 150 ML 19/26 137 75 10
SL.FB051 150 ML 24/29 137 75 10
SL.FB052 150 ML 29/32 137 75 10
SL.FB053 250 ML 14/23 140 85 10
SL.FB054 250 ML 19/26 140 85 10
SL.FB055 250 ML 24/29 140 85 10
SL.FB056 250 ML 29/32 140 85 10
SL.FB057 250 ML 34/35 140 85 10
SL.FB058 500 ML 19/26 163 105 10
SL.FB059 500 ML 24/29 163 105 10
SL.FB060 500 ML 29/32 163 105 10
SL.FB061 500 ML 34/35 163 105 10
SL.FB062 1000 ML 19/26 200 131 10
SL.FB063 1000 ML 24/29 200 131 10
SL.FB064 1000 ML 29/32 200 131 10
SL.FB065 1000 ML 34/35 200 131 10
SL.FB066 2000 ML 24/29 240 165 6
SL.FB067 2000 ML 29/32 240 165 6
SL.FB068 2000 ML 34/35 240 165 6
SL.FB069 3000 ML 24/29 260 185 1
SL.FB070 3000 ML 29/32 260 185 1
SL.FB071 3000 ML 34/35 260 185 1
SL.FB072 3000 ML 45/50 260 185 1
SL.FB073 5000 ML 24/29 305 223 1
SL.FB074 5000 ML 29/32 305 223 1
SL.FB075 5000 ML 34/35 305 223 1
SL.FB076 5000 ML 45/40 305 223 1
SL.FB077 10000 ML 29/32 380 279 1
SL.FB078 10000 ML 34/35 380 279 1
SL.FB079 10000 ML 45/40 380 279 1
SL.FB080 10000 ML 55/44 380 279 1
SL.FB081 20000 ML 55/44 435 345 1

Applications

  • Solvent distillation and recovery operations on benchtop hot plates.

  • Organic synthesis reactions requiring a single attachment port.

  • Heating and refluxing organic liquid solutions with magnetic stirring.

  • Reagent boiling and vapor generation in chemistry laboratories.

  • Storage vessel for purified liquids connected to air-tight glass adapters.

  • Pharmaceutical batch preparation and solvent evaporation.

  • Extraction setups in environmental sample processing.

  • Botanical oil extraction and distillation workflows.

  • Quality control testing in food, dairy, and beverage laboratories.

  • University organic chemistry training labs covering distillation setups.

Note

Edulabs also offers a comprehensive range of laboratory glassware, laboratory plasticware, laboratory chemicals, laboratory instruments, laboratory equipment, scientific apparatus, educational laboratory equipment, and customized laboratory solutions for educational institutions, research laboratories, pharmaceutical industries, healthcare facilities, biotechnology laboratories, environmental testing laboratories, food and beverage laboratories, and industrial quality control laboratories. Contact Edulabs for bulk orders and OEM requirements.

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