{"id":6856558248091,"title":"Laboy Glass 1000mL Single Neck Round Bottom Boiling Flask Heavy Wall with 24\/40 Joint Heating Distillation Reaction Receiving Flask Organic Chemistry Lab Glassware","handle":"laboy-glass-1000ml-single-neck-round-bottom-boiling-flask-heavy-wall-with-24-40-joint-heating-distillation-reaction-receiving-flask-organic-chemistry-lab-glassware","description":"\u003ch3\u003eLaboy Glass 1000mL Single Neck Round Bottom Boiling Flask Heavy Wall with 24\/40 Joint Heating Distillation Reaction Receiving Flask Organic Chemistry Lab Glassware\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eRound-bottom flasks (also called round-bottomed flasks,\nFlasks, round bottom, or RB Flasks)having spherical bottoms are more resistant\nto fracturing under vacuum, as a sphere more evenly distributes stress across\nits surface. Because of the spherical bottom, cork rings are needed to keep\nthe round bottom flasks upright,or heated by the water bath ,oil bath or sand\nbath.When in use, round-bottom flasks are commonly held at the neck by flask\nclamps on a stand. The flasks are usually used in heating or boiling a liquid,\nin distillation as distilling flasks and receiving flasks for the distillate,\nused as the distilling flasks in rotary evaporators.It is usually used with\nother jointed lab glassware like glass condenser,separatory funnels,cow\nreceivers. The round bottom flask has larger heating surface than the flat\nbottom flask and can be heated evenly.It is usually used in the laboratory\noperation requiring high temperature and long time heating,or vacuum\ndistillation. Laboy glass flasks are heavy wall designed,made by hand-blowing\nto ensure uniform wall thickness, made of high-quality borosilicate glass and\nannealed at 800 degree Celsius ,can be heated directly in an open flame and\ncan withstand typical laboratory thermal variations in Chemistry processes\nlike heating and cooling. Laboy Glass 25mL Single Neck Round Bottom Boiling\nFlask Heavy Wall 24\/40 Joint Heating Distillation Reaction Receiving Flask\nOrganic Chemistry Lab Glassware This round bottom flask designed with 24\/40\nstandard taper outer joint,interchangeable,leak-free,comparing to common\nboiling flask without ground joint, it is convenient,safe,easy-operation in\nlaboratory glassware setup. Capacity of 25mL. Laboy Glass 50mL Single Neck\nRound Bottom Boiling Flask Heavy Wall 24\/40 Joint Heating Distillation\nReaction Receiving Flask Organic Chemistry Lab Glassware This round bottom\nflask designed with 24\/40 standard taper outer joint,interchangeable,leak-\nfree,comparing to common boiling flask without ground joint, it is\nconvenient,safe,easy-operation in laboratory glassware setup. Capacity of\n50mL. Laboy Glass 100mL Single Neck Round Bottom Boiling Flask Heavy Wall\n24\/40 Joint Heating Distillation Reaction Receiving Flask Organic Chemistry\nLab Glassware This round bottom flask designed with 24\/40 standard taper outer\njoint,interchangeable,leak-free,comparing to common boiling flask without\nground joint, it is convenient,safe,easy-operation in laboratory glassware\nsetup. Capacity of 100mL. Laboy Glass 250mL Single Neck Round Bottom Boiling\nFlask Heavy Wall 24\/40 Joint Heating Distillation Reaction Receiving Flask\nOrganic Chemistry Lab Glassware This round bottom flask designed with 24\/40\nstandard taper outer joint,interchangeable,leak-free,comparing to common\nboiling flask without ground joint, it is convenient,safe,easy-operation in\nlaboratory glassware setup. Capacity of 250mL. Read more Laboy Glass 500mL\nSingle Neck Round Bottom Boiling Flask Heavy Wall 24\/40 Joint Heating\nDistillation Reaction Receiving Flask Organic Chemistry Lab Glassware This\nround bottom flask designed with 24\/40 standard taper outer\njoint,interchangeable,leak-free,comparing to common boiling flask without\nground joint, it is convenient,safe,easy-operation in laboratory glassware\nsetup. Capacity of 500mL. Laboy Glass 1000mL Single Neck Round Bottom Boiling\nFlask Heavy Wall 24\/40 Joint Heating Distillation Reaction Receiving Flask\nOrganic Chemistry Lab Glassware This round bottom flask designed with 24\/40\nstandard taper outer joint,interchangeable,leak-free,comparing to common\nboiling flask without ground joint, it is convenient,safe,easy-operation in\nlaboratory glassware setup. Capacity of 1000mL. Laboy Glass 2000mL Single Neck\nRound Bottom Boiling Flask Heavy Wall 24\/40 Joint Heating Distillation\nReaction Receiving Flask Organic Chemistry Lab Glassware This round bottom\nflask designed with 24\/40 standard taper outer joint,interchangeable,leak-\nfree,comparing to common boiling flask without ground joint, it is\nconvenient,safe,easy-operation in laboratory glassware setup. Capacity of\n2000mL. Read more US Standard Size Joint Will Fit into European Standard Size\nJoint Standard Taper Ground Glass Joints are interchangable.For either\nfrosted, presicon-ground standard taper joints (same size),the inner ground\nsurfaces (male joint) make a good seal with the outer(female joint)). The\njoint size is described by the form A\/B. The first number A represents the\nouter diameter (OD) in millimeters (mm) at the widest point of the inner\n(male) joint and the second number B represents the length of the joint. For\nexample, a 14\/20 joint is 14 mm wide at the top (the widest part) and is 20 mm\nin longth. The joint has a standard taper 1:10, any two joints (male and\nfemale) with the same outside diameter (A)can fit into each other ,no matther\nhow lenght the joints are. For example, a 24\/40 (US standard size) joint on a\ncondenser will fit into a 24\/29 (European standard size)flask but the ground\nglass joint will protrude (40 - 29) 11mm into the flask. Heavy Wall\nDesign,Durable and Reusable Laboy glass ware are all made of high quality\nboroslicate glass according to ASTM E438,heavy wall design,durable and\nreusable. Read more Protection of Products in Transit Check the integrity of\nthe product before packaging.Bubble wrap tightly around the product.Fill the\nspace in the packing box with pearl cotton. Material: Borosilicate Glass(PYREX\nGlass) Silicon content \u0026gt;80% Strain and Temperature 520℃ Annealing temperature\n800℃ Index of refraction 1.47 Transmittance ≧90％ Elastic modulus E 67KNmm-2\nTensile strength 40-120Nmm-2 Processing temperature(104dpas 1220℃ Coefficient\nthermal expansion (20-300℃) (3.3±0.1)×10-6\/K -1 Poisson's ratio μ 0.2\nDensity（20℃） 2.23g\/cm3 Specific heat 0.9Jg-1K-1 Thermal conductivity\n(20-100℃）1.2Wm-1K-1 Water resistance 1 Level Acid resistance 1 Level Alkali\nresistance 2 Level\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eSTANDARD 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.\u003c\/li\u003e\n \u003cli\u003eHEAT-RESISTANT DESIGN ---With spherical bottoms,this RBF is more resistant 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.\u003c\/li\u003e\n \u003cli\u003eWIDELY USED----The round bottom flask is widely used in organic chemistry,in a distillation or vacuum distillation apparatus ,its used a a distillation flask and receiving flask with a glass condenser and some adapters like the 14 way distillation adapter,take-off adapter;In a reflux process,its used as a reaction flask with a reflux condenser.It is also used as a Distilling flask in rotary evaporators.\u003c\/li\u003e\n \u003cli\u003eHIGH QUALITY---Laboy glass condensers are all made of high quality boroslicate glass according to ASTM E438,heavy wall design,durable and reusable.The ground joints are precisely grounded according to US standard.\u003c\/li\u003e\n \u003cli\u003eBUY WITH CONFIDENCE----100% 90 DAY MONEY BACK GUARANTEE simply return for a full refund,no question asked\u003c\/li\u003e\n \u003c\/ul\u003e\n\n\n\n\n","published_at":"2021-06-24T14:11:49+10:00","created_at":"2021-06-24T14:11:49+10:00","vendor":"LABOY","type":"Boiling Flasks","tags":["leo109"],"price":25400,"price_min":25400,"price_max":25400,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":40314291552411,"title":"1000mL","option1":"1000mL","option2":null,"option3":null,"sku":"B010BA0O4U","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Laboy Glass 1000mL Single Neck Round Bottom Boiling Flask Heavy Wall with 24\/40 Joint Heating Distillation Reaction Receiving Flask Organic Chemistry Lab Glassware - 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LeoForward Australia","id":23599720431771,"position":4,"preview_image":{"aspect_ratio":1.0,"height":2200,"width":2200,"src":"\/\/leoforward.com\/cdn\/shop\/products\/71JDj75qU8L.jpg?v=1624550275"},"aspect_ratio":1.0,"height":2200,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/products\/71JDj75qU8L.jpg?v=1624550275","width":2200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eLaboy Glass 1000mL Single Neck Round Bottom Boiling Flask Heavy Wall with 24\/40 Joint Heating Distillation Reaction Receiving Flask Organic Chemistry Lab Glassware\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eRound-bottom flasks (also called round-bottomed flasks,\nFlasks, round bottom, or RB Flasks)having spherical bottoms are more resistant\nto fracturing under vacuum, as a sphere more evenly distributes stress across\nits surface. Because of the spherical bottom, cork rings are needed to keep\nthe round bottom flasks upright,or heated by the water bath ,oil bath or sand\nbath.When in use, round-bottom flasks are commonly held at the neck by flask\nclamps on a stand. The flasks are usually used in heating or boiling a liquid,\nin distillation as distilling flasks and receiving flasks for the distillate,\nused as the distilling flasks in rotary evaporators.It is usually used with\nother jointed lab glassware like glass condenser,separatory funnels,cow\nreceivers. The round bottom flask has larger heating surface than the flat\nbottom flask and can be heated evenly.It is usually used in the laboratory\noperation requiring high temperature and long time heating,or vacuum\ndistillation. Laboy glass flasks are heavy wall designed,made by hand-blowing\nto ensure uniform wall thickness, made of high-quality borosilicate glass and\nannealed at 800 degree Celsius ,can be heated directly in an open flame and\ncan withstand typical laboratory thermal variations in Chemistry processes\nlike heating and cooling. Laboy Glass 25mL Single Neck Round Bottom Boiling\nFlask Heavy Wall 24\/40 Joint Heating Distillation Reaction Receiving Flask\nOrganic Chemistry Lab Glassware This round bottom flask designed with 24\/40\nstandard taper outer joint,interchangeable,leak-free,comparing to common\nboiling flask without ground joint, it is convenient,safe,easy-operation in\nlaboratory glassware setup. Capacity of 25mL. Laboy Glass 50mL Single Neck\nRound Bottom Boiling Flask Heavy Wall 24\/40 Joint Heating Distillation\nReaction Receiving Flask Organic Chemistry Lab Glassware This round bottom\nflask designed with 24\/40 standard taper outer joint,interchangeable,leak-\nfree,comparing to common boiling flask without ground joint, it is\nconvenient,safe,easy-operation in laboratory glassware setup. Capacity of\n50mL. Laboy Glass 100mL Single Neck Round Bottom Boiling Flask Heavy Wall\n24\/40 Joint Heating Distillation Reaction Receiving Flask Organic Chemistry\nLab Glassware This round bottom flask designed with 24\/40 standard taper outer\njoint,interchangeable,leak-free,comparing to common boiling flask without\nground joint, it is convenient,safe,easy-operation in laboratory glassware\nsetup. Capacity of 100mL. Laboy Glass 250mL Single Neck Round Bottom Boiling\nFlask Heavy Wall 24\/40 Joint Heating Distillation Reaction Receiving Flask\nOrganic Chemistry Lab Glassware This round bottom flask designed with 24\/40\nstandard taper outer joint,interchangeable,leak-free,comparing to common\nboiling flask without ground joint, it is convenient,safe,easy-operation in\nlaboratory glassware setup. Capacity of 250mL. Read more Laboy Glass 500mL\nSingle Neck Round Bottom Boiling Flask Heavy Wall 24\/40 Joint Heating\nDistillation Reaction Receiving Flask Organic Chemistry Lab Glassware This\nround bottom flask designed with 24\/40 standard taper outer\njoint,interchangeable,leak-free,comparing to common boiling flask without\nground joint, it is convenient,safe,easy-operation in laboratory glassware\nsetup. Capacity of 500mL. Laboy Glass 1000mL Single Neck Round Bottom Boiling\nFlask Heavy Wall 24\/40 Joint Heating Distillation Reaction Receiving Flask\nOrganic Chemistry Lab Glassware This round bottom flask designed with 24\/40\nstandard taper outer joint,interchangeable,leak-free,comparing to common\nboiling flask without ground joint, it is convenient,safe,easy-operation in\nlaboratory glassware setup. Capacity of 1000mL. Laboy Glass 2000mL Single Neck\nRound Bottom Boiling Flask Heavy Wall 24\/40 Joint Heating Distillation\nReaction Receiving Flask Organic Chemistry Lab Glassware This round bottom\nflask designed with 24\/40 standard taper outer joint,interchangeable,leak-\nfree,comparing to common boiling flask without ground joint, it is\nconvenient,safe,easy-operation in laboratory glassware setup. Capacity of\n2000mL. Read more US Standard Size Joint Will Fit into European Standard Size\nJoint Standard Taper Ground Glass Joints are interchangable.For either\nfrosted, presicon-ground standard taper joints (same size),the inner ground\nsurfaces (male joint) make a good seal with the outer(female joint)). The\njoint size is described by the form A\/B. The first number A represents the\nouter diameter (OD) in millimeters (mm) at the widest point of the inner\n(male) joint and the second number B represents the length of the joint. For\nexample, a 14\/20 joint is 14 mm wide at the top (the widest part) and is 20 mm\nin longth. The joint has a standard taper 1:10, any two joints (male and\nfemale) with the same outside diameter (A)can fit into each other ,no matther\nhow lenght the joints are. For example, a 24\/40 (US standard size) joint on a\ncondenser will fit into a 24\/29 (European standard size)flask but the ground\nglass joint will protrude (40 - 29) 11mm into the flask. Heavy Wall\nDesign,Durable and Reusable Laboy glass ware are all made of high quality\nboroslicate glass according to ASTM E438,heavy wall design,durable and\nreusable. Read more Protection of Products in Transit Check the integrity of\nthe product before packaging.Bubble wrap tightly around the product.Fill the\nspace in the packing box with pearl cotton. Material: Borosilicate Glass(PYREX\nGlass) Silicon content \u0026gt;80% Strain and Temperature 520℃ Annealing temperature\n800℃ Index of refraction 1.47 Transmittance ≧90％ Elastic modulus E 67KNmm-2\nTensile strength 40-120Nmm-2 Processing temperature(104dpas 1220℃ Coefficient\nthermal expansion (20-300℃) (3.3±0.1)×10-6\/K -1 Poisson's ratio μ 0.2\nDensity（20℃） 2.23g\/cm3 Specific heat 0.9Jg-1K-1 Thermal conductivity\n(20-100℃）1.2Wm-1K-1 Water resistance 1 Level Acid resistance 1 Level Alkali\nresistance 2 Level\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eSTANDARD 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.\u003c\/li\u003e\n \u003cli\u003eHEAT-RESISTANT DESIGN ---With spherical bottoms,this RBF is more resistant 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.\u003c\/li\u003e\n \u003cli\u003eWIDELY USED----The round bottom flask is widely used in organic chemistry,in a distillation or vacuum distillation apparatus ,its used a a distillation flask and receiving flask with a glass condenser and some adapters like the 14 way distillation adapter,take-off adapter;In a reflux process,its used as a reaction flask with a reflux condenser.It is also used as a Distilling flask in rotary evaporators.\u003c\/li\u003e\n \u003cli\u003eHIGH QUALITY---Laboy glass condensers are all made of high quality boroslicate glass according to ASTM E438,heavy wall design,durable and reusable.The ground joints are precisely grounded according to US standard.\u003c\/li\u003e\n \u003cli\u003eBUY WITH CONFIDENCE----100% 90 DAY MONEY BACK GUARANTEE simply return for a full refund,no question asked\u003c\/li\u003e\n \u003c\/ul\u003e\n\n\n\n\n"}