Best Laboy in 2026

STANDARD SIZE--- This round bottom flask designed with 24/40 standard taper outer joint,interchangeable,leak-free,comparing to common boiling flask without ground joint, it is convenient,safe,easy-operation in laboratory glassware setup. Capacity of 2000mL.

HEAT-resistance DESIGN ---With spherical bottoms,this RBF is more resistance to fracturing under vacuum, as a sphere more evenly distributes stress across its surface. Laboy glass flasks are heavy wall designed,made by hand-blowing to ensure uniform wall thickness, made of high-quality borosilicate glass and annealed at 800 degree Celsius ,can be heated directly in an open flame and can withstand typical laboratory thermal variations in Chemistry processes like heating and cooling.

WIDELY USED----The round bottom flask is widely used in organic chemistry,in a or vacuum apparatus ,it’s used a a flask and receiving flask with a glass condenser and some adapters like the 14 way adapter,take-off adapter;In a reflux process,it’s used as a reaction flask with a reflux condenser.It is also used as a flask in rotary evaporators.

STANDARD SIZE--- This round bottom flask designed with 24/40 standard taper outer joint,interchangeable,leak-free,comparing to common boiling flask without ground joint, it is convenient,safe,easy-operation in laboratory glassware setup. Capacity of 1000mL.

HEAT-resistance DESIGN ---With spherical bottoms,this RBF is more resistance to fracturing under vacuum, as a sphere more evenly distributes stress across its surface. Laboy glass flasks are heavy wall designed,made by hand-blowing to ensure uniform wall thickness, made of high-quality borosilicate glass and annealed at 800 degree Celsius ,can be heated directly in an open flame and can withstand typical laboratory thermal variations in Chemistry processes like heating and cooling.

WIDELY USED----The round bottom flask is widely used in organic chemistry,in a or vacuum apparatus ,it’s used a a flask and receiving flask with a glass condenser and some adapters like the 14 way adapter,take-off adapter;In a reflux process,it’s used as a reaction flask with a reflux condenser.It is also used as a flask in rotary evaporators.

DESIGN----Round bottom design having spherical bottoms are more resistant to fracturing under vacuum, as a sphere more evenly distributes stress across its surface. A cork stand is needed to keep the round bottom flask upright,or heated by the water bath ,oil bath or sand bath.Comparing to the single neck round bottom flask,this 2 neck flask featured an angled neck with standard taper joint as an extra opening.

WIDELY USED---The 2 neck round bottom flask is widely used in the organic chemistry process, reflux ,extraction,reaction etc.In a apparatus,the 2 neck round bottom flask used as the flask,the straight neck attaches a 3 way adapter or a column,the other neck can be used to connect a thermometer adapter ,bleeding tube, or additional funnel.

DIMENSIONS-----This 2 neck round bottom flask has capacity of 1000mL, with 24/40 center joint & 24/40 side joint,attaching any lab glassware apparatus with standard taper joint.

DESIGN----Round bottom design having spherical bottoms are more resistant to fracturing under vacuum, as a sphere more evenly distributes stress across its surface. A cork stand is needed to keep the round bottom flask upright,or heated by the water bath ,oil bath or sand bath.Comparing to the single neck round bottom flask,this 2 neck flask featured an angled neck with standard taper joint as an extra opening.

WIDELY USED---The 2 neck round bottom flask is widely used in the organic chemistry process like distillation, reflux ,extraction,reaction etc.In a distillation apparatus,the 2 neck round bottom flask used as the distillation flask,the straight neck attaches a 3 way distillation adapter or a distillation column(in fractional distillation),the other neck can be used to connect a thermometer adapter ,bleeding tube, or additional funnel.

DIMENSIONS-----This 2 neck round bottom flask has capacity of 2000mL, with 24/40 center joint & 24/40 side joint,attaching any lab glassware apparatus with standard taper joint.

DESIGN---- This powder funnel features 60°side angle and a standard taper inner joint to ensure tight attachment to other lab glassware with standard taper joints.With heavy walls for greater durability when pouring powders or liquids into the flasks or separatory funnels with standard ground taper joint.

WIDELY USED----This powder funnel is used for adding powder or liquid to lab glass containers with standard taper joints.When pouring large particles into reaction flasks,powder funnels provide a clean and convenient method.

DIMENSIONS-----The top outer diameter of the opening is 100mm,the lower joint is 24/40.

SIMPLE DESIGN EASY SETUP----The liebig condenser is the most basic water-cooled condenser,also named “water condenser”,which consists of an inner straight tube surrounded by an outer jacket tube,the cool water flows through the outer jacket to condensate the vapor in the inner tube,having a better cooling performance than air condenser.

COMMONLY USED ----A liebig condenser commonly used in a apparatus,also in reflux process and soxhlet extraction can be placed in vertical and oblique position as a reflux condenser and a condenser.As jointed glassware part,it is usually used with a round bottom flask,a three way adapter,a take off adapter to assemble a or reflux setup.

DIMONSIONS----It is designed with 24/40 standard taper joint at top and bottom,and two glass hose connectionsconnecting the inner tube through which coolant flows,the lower hose used for coolant inlet,and the higher hose used for coolant outlet.With the jacket length of 300mm

Vacuum jacketed 3 way distilling thermometer adapter with 24/40 lower joins and 10/18 upper thermometer joint.

The 24/40 lower and side taper joint used to connect the liebig or west condenser with the distilling flask or distilling column.

With 10/18 female ground joint fit for a thermometer with 10/18 or 10/30 male joint to monitor the temporature in reaction.

DESIGN----The flat bottom flask is likely the round bottom flask but with a flat bottom allowing it standing up flat surface as the flask can sit upright on its own,rather than in a flask clamp or cork stand,ideal for using as a receiving flask.When under heating,it is not durable as round bottom flask but better than Erlenmeyer flask which have the sharp and vulnerable corners.The short neck is with a standard taper joint,which can attach the lab glassware with standard tape joint.

WIDELY USED-----A flat bottom flask is used in chemistry laboratory for experiments involving collecting and measuring liquids, mixing solvent In a distillation apparatus,the flat bottom flasks can attach to a distillation adapter,liebig or allhnn condenser,take off adapter as a distillation or receiving flask.In a soxhlet extraction, a flat bottom attaches the soxhlet extractor used as boiling and receiving flask.

DIMENSIONS-----This flat bottom flask has a capacity of 500mL,the short neck is with a 24/40 standard taper female joint, which is interchangeable ,can be attached to any jointed glassware with a 24/40 male joint.

HIGH EFFICIENCY In a soxhlet extraction,the sample material contained in the soxhlet thimble can be extracted multiple time automatically with a small solvent dosage in high efficiency.Comparing to the steam ,solvent extraction happpens at a lower temperature which will dissociation of the compounds in the extracts from plants sensitive to temperature.

DIMENSIONS---The glass Soxhlet extractor set with 55/50 upper and 24/40 lower joint including an allihn reflux condenser with a water cooled inner drip joint at bottom ,the jacket length is 300mm,Overall height is 405mm,the joint is 55/50; A soxhlet extractor tube, with 55/50 upper joint and 24/40 lower joint.;An all- glass soxhlet thimble with sealed in fritted disc for which the pore diameter is from is from 20 to 35 μm.

WIDELY USED :Soxhlet extraction, also known as fat extraction,continuous extraction , is a laboratory apparatus for extracting compounds from solid material. Soxhlet extractors are often used for the determination of crude fat content.,Which is determined by extracting the fat from the sample using a solvent.It also can be used to extract essential oils from plant material by food grade solvents

The column,also named vigreux column designed with 200mm deep pointed intendations in its sidewall to increase the surface area for liquid to condense

With two 24/40 standard taper joints at both ends to connect a flask and a condenser using a three way adapter.

Used in the fractional to separatory liquids which have close boiling point,The vigreux column acts as a small condenser, makes liquids with higher boiling points fall back down into the flask.

The distillation column,also named vigreux column designed with 300mm deep pointed intendations in its sidewall to increase the surface area for liquid to condense

With two 24/40 standard taper joints at both ends to connect a distillation flask and a condenser using a three way distillation adapter.

Used in the fractional distillation to separatory liquids which have close boiling point,The vigreux column acts as a small condenser, makes liquids with higher boiling points fall back down into the distilling flask.

Steam has been in use for essential oil extraction and alcohol for many years,which is carried out by passing steam through the biomass(plant material) whereby the steam volatile compounds are vaporized.condensed and collected in the receiving flask. This steam is not only commonly in the organic chemistry laboratory,but also suitable to use as a home to extract essential oil.

Comparing to HMK21,this kit supplied with an extra biomass flask between the claisen adapter and the adapter.The claisen adapter is applied due to the other entry for adding extra water to the system without stopping using a separatory funnel as an additional funnel,which can be replaced by a pressure equalizing funnel or a simple powder funnel.And there is only water in the flask to be heated to produce steam.

The glassware parts in this kit are all with 24/40 standard taper joints for a safe and convenient seal,which includes two separatory funnels used for adding water and separation,A 500mL round bottom flask,a 500mL flat bottom flask,a claisen adapter,a biomass flask, a 3 way adapter, a penny head stopper,a liebig condenser ,a 105 bent adapter,16ft rubber tubing, 10pcs joint clips,a cork stand.

DESIGN----This is a two-piece design vacuum cold trap,the connections on the uppper parts are with serrated hose connection,The center tube with 10mm hose connections for easy connection to a vacuum gas manifold bank tubes which are also with 10mm hose connections.The serration hose connection on the side tube have an O.D.of 13mm at the smallest serration and 16mm at the largest serration. The lower part is a thick wall round bottom tube with standard taper outer joint.

USE----It is used to place between the experimental apparatus and the vacuum source. In a schlenk line,the vacuum trap is usually connected to the vacuum bank of the vacuum gas manifold

DIMENSIONS-----This vacuum trap has 24/40 joints to assemble the two parts together, The O.D of the outer body is 30mm,the outer body below the joint is 200mm,the O.D.of the inner and side tube is 10mm.

DESIGN----This three neck distilling flask designed with a round bottom and angled necks which allows to attach three lab glassware components for distillation apparatus( simple distillation,steam distillation,fractional distillation,azeotropic distillation).Round bottom design having spherical bottoms are more resistant to fracturing under vacuum, as a sphere more evenly distributes stress across its surface.and allows more uniform heating or boiling of a liquid.

WIDELY USED ---Round-bottom flasks are often used to contain chemical reactions for reflux set-ups and laboratory-scale synthesis.It also can be used as a distilling flasks and receiving flasks for the distillate. For example, in a Grignard Reaction,a 3 neck flask will be used a distillation flask under a heating mantle, the center neck attaches a PTFE adapter for a magnetic stir shaft, the left angled neck attaches a pressure equalizing.The wrong neck attaches a liebig or west condenser.

DIMENSIONS-----This durable round bottom flasks with 3 necks, one center and two angled,with 24/40 standard taper joints on the necks accommodating lab apparatus for multi purpose. It features heavy wall spherical body and 1000mL capacity.Comparing to the single neck or twin neck flask,the 3 neck flasks have one more jointed neck for extra function,when it is not needed,the extra necks can be stopped by penny head glass stoppers.

COMPONENT-----The organic chemistry kit is included 5 round bottom flasks with different volumes from 25mL to 500mL,a vacuum take-off adapter,a claisen adapter,a 3 way adapter,a thermometer adapter,a penny head stopper,a separatory funnel with joints at top and bottom,a condenser ,a west condenser,a glass kerosene thermometer ,5 pcs 24# joint clips.All the joints are 24/40

MULTI-PURPOSE-----This is a most commonly used lab glassware kit in organic chemistry which can assemble a simple apparatus,also a fractional ,water and steam apparatus.The condenser can be used both as a liebig condenser or as a fractional column.The separatory funnel can be used as an additional funnel in the water and steam apparatus ,and also can be used for liquid-liquid extraction.

HEAVY WALL ---This lab glassware is heavy-wall designed , made by hand-blowing according to ASTM E438 ,made of high-quality borosilicate glass and annealed at 800 degree Celsius ,can be heated directly in an open flame and can withstand typical laboratory thermal variations in Chemistry processes like heating and cooling,durable and reusable.

A graham condenser consists of an inner spiral surrounded by an outer jacket tube

Graham condenser also called Inland Revenue condenser. It is very similar to the coiled condenser

This Graham condenser is designed with 24/40 standard taper joints at top and bottom to fit the flask and other lab jointed glassware apparatus,with 10mm glass hose connections and a jacket length of 300mm

DESIGN----The flat bottom flask is likely the round bottom flask but with a flat bottom allowing it standing up flat surface as the flask can sit upright on its own,rather than in a flask clamp or cork stand,ideal for using as a receiving flask.When under heating,it is not durable as round bottom flask but better than Erlenmeyer flask which have the sharp and vulnerable corners.The short neck is with a standard taper joint,which can attach the lab glassware with standard tape joint.

WIDELY USED-----A flat bottom flask is used in chemistry laboratory for experiments involving collecting and measuring liquids, mixing solvent In a apparatus,the flat bottom flasks can attach to a adapter,liebig or allhnn condenser,take off adapter as a or receiving flask.In a soxhlet extraction, a flat bottom attaches the soxhlet extractor used as boiling and receiving flask.

DIMENSIONS-----This flat bottom flask has a capacity of 2000mL,the short neck is with a 24/40 standard taper female joint, which is interchangeable ,can be attached to any jointed glassware with a 24/40 male joint.

COMPONENT----This kit includes most commonly used lab jointed glassware with 24/40 joint and other accessories like penny head stopper,cork stand,bosshead clamp,3finger double adjustabe clamp,plastic andalloy joint clips.The glassware includes thermometer adapter,vacuum adapter,claisen adapter,3 way thermometer adapter,3 way adapter,liebig condenser,allihn condenser,fractinal column,graham condenser,separatory funnel, buchner funnel.

USE----This kit can be used to assemble a simple apparatus,a water and steam apparatus, a fractionation apparatus,a reflux setup.Allihn,graham condenser are usually used as a reflux condenser,while liebig condenser can be used both in a apparatus but also a reflux setup.The separatory funnel with two joints can be also be used as an addtion funnel.

DIMENSIONS------All the glass condensers in this kit are 300mm in effective length.The single neck, 2 neck ,3 neck flask with capacity from 250mL to 1000mL,the separatory funnel is with capacity of 250mL,all the joints in this kit are 24/40.

COMPONENT----It has a 3 way distillation adapter,a 3 way thermometer adapter,a claisen adapter, a vacuum take off adapter which are commonly used in a distillation apparatus;and a liebig condenser,an allihn condenser,an graham condenser, a distillation column for multi-purpose;It also includes a 250mL 2 neck round bottom flask,a 500mL 3 neck flask,a 1000mL 2 neck flask.a 1000mL single neck flask,a 250mL separatory funnel,penny head stopper,24# plastic joint clips etc.

USE------The 3 way distillation adapter,3 way thermometer adapter,liebig condenser,round bottom flasks are all used for a distillation apparatus.The claisen adapter supply an extra joint to attach an separatory funnel for adding or other purpose.The allihn condenser,graham condenser can be used as reflux condensers.The separatory funnel with joints at top and bottom can be used for liquid-liquid extraction and as an addtion funnel.

DIMENSIONS-----This is a advanced lab glassware kit including the most commonly used Jointed lab glassware in organic chemistry for synthesis,distillation,reaction,reflux etc,all the joints in this kits are 24/40.And the kit includes 29 parts in total.

Cap-design Hollow Glass Stopper With Standard Taper outer Joint

Made of borosilicate glass 3.3 by hand-blowing,heavy wall design

The interchangable glass oint was grounded both by machine and hand to make a good seal

DESIGN----This is a boiling flask designed with flat bottom,with 2 neck featured by two standard taper 24/40 outer joints.It is likely the 2 neck round bottom flask but with a flat bottom allowing it standing up flat surface as the flask can sit upright on its own,rather than in a flask clamp or cork stand,ideal for using as a receiving flask..The short neck is with two standard taper joint,which can attach the lab glassware with standard tape joints.

USE-----A flat bottom flask is used in chemistry laboratory for experiments involving collecting and measuring liquids, mixing solvent In a distillation apparatus,the flat bottom flasks can attach to a distillation adapter,liebig or allhnn condenser,take off adapter as a distillation or receiving flask. With two necks,it allows attaching one more glassware parts in the reaction or distillation,for example,it is ideal to fit a magnetic stirrer shaft for Stirring solvent.

DIMENSIONS-----This flat bottom flask has a capacity of 500mL,the short neck is with two 24/40 standard taper outer joints, which is interchangeable ,can be attached to any jointed glassware with a 24/40 male joint.

DESIGN-----Recovery flask,also named evaporation flask,designed with sloping side wall which are balanced to run-out during rotation,with round bottom fitting standard heating mantles,featuring a single neck with standard taper ground glass joint designed for easy recovery of reaction products using a spatula.

MULTIPURPOSE------The recovery flask can be used for heating, evaporation, and solvent storage or transfer.In a rotary evaporators,it is used as a evaporation flask,it is also can be used in apparatus as a receiving flask, and other experiment for storage or transfer.

DIMENSIONS-----This pear-shaped recovery flask is with 24/40 standard top joint ,capacity of 500mL.

DESIGN---A pear-shaped flask is designed round at top but pointy at the bottom so a pipette can all the liquid,and allow recover much more material than in a round bottom flask.With a standard taper joint at top for easy assembly with other lab glass apparatus with standard taper joints.It is usually with small size for small-scale s.

WHERE IS IT USED?----- Pear-shaped flasks can be used for both synthesis and evaporation,it is used for evaporating solutions to dryness post synthesis using a rotary evaporator.It can be used as both reaction flask and evaporation flask in organic chemistry.An example:it is used as a flask in the small scale short path apparatus attaching a short path head.

DIMENSIONS-----The pear-shaped flask is with 24/40 joint,capacity of 50mL.

Size:with 24/40 standard taper joints at top and bottom at a 105 degree angle ideal for connecting the glass condenser and receiving flask .with a sealed-in drip to take the fluid into the receiving flask.

Feature:Comparing to the vacuum take off adapter, this adapter is not with a glass hose connection.It is not suitable for the vacuum ,but it is ideal for using the simple ,fractional ,steam

Use:the 24/40 g;ass take off glass adapter is used as a connecting adapter for the glass condenser and receiving flask, take the condensed liquid into the receiving flask in a setup.

This is a special allihn condenser only with 34/45 bottom male joint inserting to a soxhlet extractor body ,the size is larger with an inner tube consisting of a series of bulbs which increase the surface area availiable for vapor condensation surrounded by an outer jacket tube.This design can improve the cooling performance,in practise, the allihn condenser can be replaced by a liebig condenser, coiled condenser,dirmoth condenser or graham condenser used as a reflux condenser.

In a soxhlet extraction apparatus, this allihn condenser with lower male joint attached the soxhlet extractor body cools the solvent vapour from the boiling flask and drips back down into the thimble containing the solid material. With 10mm O.D.hose connections at top and bottom accommodating 8mm I.D.rubber tubing,the cool water flows in from the lower hose ,and flows out from the upper hose.

The glass allihn condenser is with 55/50 male joint, 300mm in jacket length 405mn overall height

DESIGN----The pressure equalizing funnel is a special type of dropping funnel .Comparing to the ordinary cylindrical dropping funnel and pear-shaped separatory dropping funnel,it is designed with an additional glass tube at side from the top of cylindrical body to the tube between the stopcock and lower male joint.The funnel features a graduated cylindrical tube as main body,with standard joints at top and bottom,a 0-4mm high vacuum valve above the lower joint.

ADVANTAGE---A pressure equalizing funnel is used to add exact amounts of liquid to the receiving flask slowly and smoothly.With the side narrow-bore tube,the liquid form the funnel drops smooth without having to remove the glass joint stopper.In a reflux reaction,the funnel will be attached to one neck of the receiving flask,while the reflux condenser will be placed on the other neck.It is also ideal to handle air-sensitive reagents in a sealed,inert-gas environment.

DIMENSIONS------This graduated addition funnel has a capacity of 125mL,with 24/40 top and bottom joints, with a 0-4mm high vacuum valve above the lower male joint.

DESIGN----This schlenk flask is comprised of a single neck round bottom flask which can be heated directly in an open flame or heating mantle,ideal for reflux reaction in air-sensitive chemistry.With 2mm glass stopcock having a constant pressure retention device.With a standard taper joint on the single neck attaching to lab glassware for adding ,transferring or reflux.

USE----This schlenk flask with glass stopcock is usually used as a reaction flask in air-sensitive chemistry.The 9mm glass stopcock connects to the schlenk line allowing the flask to be evacuated or filled with gases (usually inert gases).The taper joint at top permits easy transfer of liquids or solids,it may attach an addition funnel ,reflux condenser, magnetic stirring shaft, vacuum flow control adapter to assemble a reaction setup.

DIMENSIONS----This round bottom flask is designed with 2mm glass stopccok on side-arm ,with 24/40 standard taper joint,which can be stopped by a glass topper or 14# rubber septum.Capacity of 250mL.

GOOD COOLING PERFORMANCE----The Allihn condenser,also known as a “bulb condenser”,is designed with an inner tube consisting of a series of bulbs which increase the surface area available for vapor condensation surrounded by an outer jacket tube, the cool water flows through the outer jacket to condensate the vapor in the inner tube.Additionally,the Allihn condenser has a wider bore at the bottom and the condensed liquid can run down along the sides avoiding blocking the upward vapor.

COMMONLY USED----Allihn condensers are used for laboratory-scale refluxing and provide a greater surface area than similar Liebig condensers.A reflux apparatus usually consists of an Allihn condenser used as a reflux condenser,a round bottom flask,a drying tube to the atmospheric from entering into the reaction,a separatory funnel or pressure equalizing funnel for adding reagents .Allihn condesner are also can be used in apparatus and soxhlet extraction.

DIMONSIONS----It is designed with 24/40 standard taper joint at top and bottom,and two glass hose connections connecting the inner tube through which coolant flows,the lower hose used for coolant inlet,and the higher hose used for coolant outlet.With the jacket length of 300mm

DESIGN---A pear-shaped flask is designed round at top but pointy at the bottom so a pipette can all the liquid,and allow recover much more material than in a round bottom flask.With a standard taper joint at top for easy assembly with other lab glass apparatus with standard taper joints.It is usually with small size for small-scale s.

WHERE IS IT USED?----- Pear-shaped flasks can be used for both synthesis and evaporation,it is used for evaporating solutions to dryness post synthesis using a rotary evaporator.It can be used as both reaction flask and evaporation flask in organic chemistry.An example:it is used as a flask in the small scale short path apparatus attaching a short path head.

DIMENSIONS-----The pear-shaped flask is with 24/40 joint,capacity of 200mL.

GOOD COOLING PERFORMANCE----The Allihn condenser,also known as a “bulb condenser”,is designed with an inner tube consisting of a series of bulbs which increase the surface area available for vapor condensation surrounded by an outer jacket tube, the cool water flows through the outer jacket to condensate the vapor in the inner tube.Additionally,the Allihn condenser has a wider bore at the bottom and the condensed liquid can run down along the sides avoiding blocking the upward vapor.

COMMONLY USED----Allihn condensers are used for laboratory-scale refluxing and provide a greater surface area than similar Liebig condensers.A reflux apparatus usually consists of an Allihn condenser used as a reflux condenser,a round bottom flask,a drying tube to the atmospheric from entering into the reaction,a separatory funnel or pressure equalizing funnel for adding reagents .Allihn condesner are also can be used in apparatus and soxhlet extraction.

DIMONSIONS----It is designed with 24/40 standard taper joint at top and bottom,and two removable hose connections connecting the inner tube through which coolant flows,the lower hose used for coolant inlet,and the higher hose used for coolant outlet.With the jacket length of 300mm