Bunsen flask purpose. Bunsen flask - laboratory glassware for filtration and collection of chemical reagents. Pointed-bottom flasks type O with an interchangeable cone
Flask (German. Kolben) - a glass vessel with a round or flat bottom, usually with a narrow long neck. A variety of technical vessels used in chemical laboratories.
Bulbs are also called cylinders of electric vacuum and gas-discharge lamps. Flasks are used in laboratories as reaction vessels. There are also special volumetric flasks for the preparation of analytical solutions with high precision.
For heating flasks in laboratories and in chemical industries, specialized and universal mantle heaters are used.
Pear-shaped flasks type Gr
Purpose and scope of pear-shaped flask:
Pear-shaped flask type Gr are intended for evaporation, filtration, distillation, distillation, synthesis and distillation of chemicals for laboratory purposes. A pear-shaped bulb Gr has interchangeable cones. Pear-shaped flask Gr is made of chemically resistant glass of the TC group. Laboratory flasks type Gr are resistant to the effects of chemical solutions.
- H - Total flask length (mm)
Conical flasks type Kn
Purpose and scope of the conical flask type Kn
Conical flasks type Kn are designed for evaporation, filtration, distillation, distillation, synthesis and distillation of chemicals for laboratory purposes. Flask Kn pear-shaped. It is made of chemically resistant glass of the TC group. Laboratory flasks type Kn are resistant to the effects of chemical solutions.
- H - Total flask length (mm)
- D - Diameter of the widest part of the flask (mm)
Name of product | vendor code | A type | Use | Capacity, ml | D, mm | Cone | Qty, pcs per pack | |
Conical flask (with interchangeable cone) | 200765 | Kn | 1 | 50 | 51 | 14/23 | 192/12 | |
200766 | 50 | 51 | 19/26 | 192/12 | ||||
200767 | 100 | 64 | 14/23 | 192/12 | ||||
200768 | 100 | 64 | 19/26 | 192/12 | ||||
200769 | 100 | 64 | 29/32 | 192/12 | ||||
200770 | 250 | 85 | 19/26 | 72 | ||||
200771 | 250 | 85 | 24/29 | 72 | ||||
200772 | 250 | 85 | 29/32 | 72/8 | ||||
200773 | 500 | 105 | 29/32 | 48/8 | ||||
200774 | 1000 | 131 | 29/32 | 24on6 | ||||
200775 | 1000 | 131 | 45/40 | 24on6 | ||||
200776 | 2000 | 166 | 29/32 | 12on2 | ||||
200777 | 2000 | 166 | 45/40 | 12 |
Conical flasks with interchangeable cones, TS TU 14307481.014-95
Name of product | vendor code | A type | Use | Capacity, ml | D, mm | Cone | Qty, pcs per pack | |
Conical flask (with interchangeable cone and scale) | 200161 | Kn | 1 | 100 | 64 | 29/32 | 192 | |
200162 | 250 | 85 | 19/26 | 72 | ||||
200163 | 250 | 85 | 24/29 | 72 | ||||
200164 | 250 | 85 | 29/32 | 72 | ||||
200165 | 500 | 105 | 29/32 | 48 | ||||
200166 | 1000 | 131 | 29/32 | 24 | ||||
200167 | 2000 | 166 | 29/32 | 12 |
Conical flasks with a cylindrical neck, TC GOST 25336-82
Name of product | vendor code | A type | Use | Capacity, ml | D, mm | Qty, pcs per pack | ||
Conical flask (with a cylindrical neck) | 200168 | Kn | 2 | 25 | 18 | - | ||
200169 | 50 | 22 | 192/12 | |||||
200170 | 100 | 22 | 192/12 | |||||
200171 | 100 | 34 | 192/12 | |||||
200172 | 250 | 34 | 72/8 | |||||
200173 | 250 | 50 | 72/8 | |||||
200175 | 500 | 34 | 48/8 | |||||
200176 | 500 | 50 | 48/8 | |||||
200177 | 1000 | 42 | 24on6 | |||||
200178 | 1000 | 50 | 24on6 | |||||
200179 | 2000 | 50 | 12 to 2 | |||||
200180 | 3000 | 50 | 08 to 2 | |||||
200181 | 5000 | 50 | 04 on 1 |
Conical flasks with a cylindrical neck, TS TU 14307481.014-95
Name of product | vendor code | A type | Use | Capacity, ml | D, mm | Qty, pcs per pack | ||
Conical flask (with a cylindrical neck and with a scale) | 200182 | Kn | 3 | 50 | 22 | 192/12 | ||
200183 | 100 | 22 | 192/12 | |||||
200184 | 100 | 34 | 192/12 | |||||
200185 | 250 | 34 | 72/8 | |||||
200187 | 250 | 50 | 72/12 | |||||
200188 | 500 | 34 | 48/8 | |||||
200190 | 500 | 50 | 48/8 | |||||
200191 | 1000 | 42 | 24on6 | |||||
200192 | 1000 | 50 | 24on6 | |||||
200193 | 2000 | 50 | 12 to 2 | |||||
200194 | 3000 | 50 | 08 to 2 | |||||
200195 | 5000 | 50 | 04 on 1 |
Round-bottomed flasks KRN (Engler) type
Purpose and scope of the Engler flask
A round-bottomed flask is used for laboratory work related to the distillation of petroleum products. The Engler flask is made of chemically resistant glass of the TC group. Laboratory flasks type KRN are resistant to the effects of chemical solutions.
- H - Total flask length (mm)
- D - Diameter of the widest part of the flask (mm)
Round-bottom flasks type K, version 1, version 2
Purpose and scope of flask type K
The flask is designed for laboratory work, can be used as a receiver for distillation. Used for various syntheses and laboratory work. Flask type K pear-shaped. It is made of chemically resistant glass of the TC group. Laboratory flasks type K are resistant to the effects of chemical solutions.
- H - Total flask length (mm)
- D - Diameter of the widest part of the flask (mm)
Round-bottomed flasks with a cylindrical neck, TS GOST 25336-82
Name of product | vendor code | A type | Use | Capacity, ml | D, mm | Qty, pcs per pack | ||
Round-bottom flask (with a cylindrical neck) | 200622 | TO | 2 | 25 | 18 | - | ||
200624 | 50 | 18 | - | |||||
200628 | 100 | 22 | - | |||||
200629 | 100 | 34 | - | |||||
200630 | 250 | 34 | - | |||||
200632 | 250 | 50 | - | |||||
200633 | 500 | 34 | - | |||||
200635 | 500 | 50 | - | |||||
200636 | 1000 | 42 | - | |||||
200637 | 2000 | 50 | - | |||||
200638 | 4000 | 50 | - | |||||
200639 | 6000 | 65 | - |
Round-bottomed flasks with interchangeable cones, TS GOST 25336-82
Name of product | vendor code | A type | Use | Capacity, ml | D, mm | Cone | Qty, pcs per pack | |
Round bottom flask (with interchangeable cone) | 200220 | TO | 1 | 25 | 42 | 14/23 | 192 | |
200221 | 50 | 51 | 14/23 | |||||
200222 | 50 | 51 | 19/26 | |||||
200224 | 100 | 64 | 14/23 | |||||
200225 | 100 | 64 | 19/26 | |||||
200226 | 100 | 64 | 29/32 | |||||
200227 | 250 | 85 | 29/32 | 72 | ||||
200230 | 500 | 105 | 29/32 | 48 | ||||
200233 | 1000 | 131 | 29/32 | 24 | ||||
200236 | 2000 | 166 | 29/32 | 12 | ||||
200238 | 4000 | 207 | 45/40 | 6 | ||||
200240 | 6000 | 236 | 60/46 | 4 | ||||
200241 | 10000 | 179 | 60/46 | 2 |
* 1000 ml round bottom flask is available only with interchangeable cones (version 1).
GOST 25336-82
Pointed-bottom flasks type O with an interchangeable cone
Description and use of laboratory flasks type O:
Pointed bottom flasks type O are used for filtration, distillation, distillation, distillation and synthesis of chemicals in the laboratory.
Flat-bottomed flasks type P
Purpose and scope of flat-bottomed flask type P:
Flat-bottomed flasks are used as a receiver for the distillation of various organic syntheses and laboratory work.
Flat-bottomed flasks type P are made of chemically resistant glass of the TC group.
Laboratory flasks type P are resistant to the effects of chemical solutions.
- H - Total flask length (mm)
- D - Diameter of the widest part of the flask (mm)
Flat-bottomed flask with interchangeable cone
Flat-bottomed flask with a cylindrical neck
Name of product | vendor code | A type | Use | Capacity, ml | D, mm | Qty, pcs per pack | |
Flat-bottomed flask (with cylindrical neck) | 900452 | P | 2 | 25 | 18 | 190 | |
200609 | 50 | 18 | 192/12 | ||||
200610 | 50 | 22 | 192/12 | ||||
200612 | 100 | 34 | 192/12 | ||||
200613 | 250 | 34 | 72 | ||||
200614 | 250 | 50 | - | ||||
200615 | 500 | 34 | 48/8 | ||||
200616 | 500 | 40 | 48 | ||||
200617 | 500 | 50 | 48 | ||||
200618 | 1000 | 42 | |||||
200619 | 2000 | 50 |
* Flat-bottomed flask type P with a capacity of 25 ml is produced only with a cylindrical neck (version 2) according to TU 3 of Ukraine 14307481.014-95.
Flasks with a tube (Bunsen)
Purpose and scope of Bunsen flask with a tube:
Bunsen flask with tube is used for vacuum filtration.
The Bunsen flask is made of glass and has a thick-walled conical shape.
The upper part of the flask has a place for connection to a vacuum pump or to a vacuum line.
The flask with a tube is intended for laboratory use.
It is made of chemically resistant glass of the TC group in two versions - with an interchangeable cone and a cylindrical neck. The nominal capacity in the designation and name of the flasks is conditional. Bunsen laboratory flasks are resistant to the effects of chemical solutions.
- H - Total flask length (mm)
- D - Diameter of the widest part of the flask (mm)
Flask with a tube (Bunsen) with a cylindrical neck
Name of product | vendor code | Execution | Capacity, ml | D, mm | d, mm | |
flask with tube (Bunsen) | 200813 | 1 | 100 | 65 | 19 | |
200814 | 250 | 90 | 29 | |||
200815 | 500 | 109 | 29 | |||
200816 | 1000 | 132 | 45 | |||
200817 | 2000 | 180 | 45 | |||
200818 | 5000 | 238 | 45 |
Flask with tube (Bunsen) with interchangeable cones
Name of product | vendor code | Execution | Capacity, ml | D, mm | H mm | |
flask with tube (Bunsen) | 200819 | 2 | 100 | 65 | 100 | |
200820 | 250 | 90 | 136 | |||
200821 | 500 | 109 | 186 | |||
200822 | 1000 | 132 | 240 | |||
200823 | 2000 | 180 | 288 | |||
200824 | 5000 | 238 | 360 |
Flasks Kjeldahl type
Purpose and scope of the Kjeldahl flask
The Kjeldahl flask is used as receivers for distillation, for various organic syntheses, laboratory processes and for the determination of nitrogen according to Kjeldahl.
The Kjeldahl flask is pear-shaped.
Manufactured from chemically resistant glass of the TC group. Kjeldahl laboratory flasks are resistant to the effects of chemical solutions.
- H - Total flask length (mm)
- D - Diameter of the widest part of the flask (mm)
Kjeldahl flask with interchangeable cones
Name of product | vendor code | Execution | Capacity, ml | Cone | |||
Kjeldahl flask | 200642 | 1 | 50 | 14/23 | |||
200643 | 100 | ||||||
200644 | 100 | 29/32 | |||||
200645 | 250 | 19/26 | |||||
200646 | 250 | 29/32 | |||||
200647 | 500 | ||||||
200648 | 1000 |
Kjeldahl flask with cylindrical neck
Kohlrausch flasks
Purpose and scope of Kohlrausch flask:
Kohlrausch laboratory flasks are used to measure the volume, settle the liquid and determine the percentage of sugar in sugar beets.
Kohlrausch laboratory flasks are resistant to the effects of chemical solutions.
- H - Total height of Kohlrausch flask (mm)
- D - Diameter of the wide part of the Kohlrausch flask (mm)
Volumetric flasks of the 1st and 2nd class of accuracy
Purpose and scope of the volumetric flask:
Volumetric flasks are used to store and measure a certain volume of liquid.
Volumetric flasks are round-pear-shaped volumetric glass vessels with an elongated cylindrical neck.
- H - Flask height (mm)
- D - Diameter of the wide part of the flask (mm) Variants of execution of volumetric flasks.
Volumetric flasks:
- Use 1 - Volumetric flasks with one mark;
- Use 2 - Volumetric flasks with one mark and a ground stopper;
- Use 2а - Volumetric flasks with one mark and a plastic stopper;
- Use 3 - Volumetric flasks with two marks;
- Use 4 - Volumetric flasks with two marks and a ground stopper;
- Use 4а - Volumetric flasks with two marks and a plastic stopper.
Volumetric flasks of the 1st class of accuracy GOST 1770-74
Name of product | vendor code | Use | Capacity, ml | |
Flask with one mark | 200519 | 1 | 25 | |
200521 | 50 | |||
200522 | 100 | |||
200525 | 200 | |||
200526 | 250 | |||
200529 | 500 | |||
200530 | 1000 | |||
Flask with one mark and ground stopper | 200532 | 2 | 5 | |
200533 | 10 | |||
200535 | 25 | |||
200537 | 50 | |||
200539 | 100 | |||
200541 | 200 | |||
200543 | 250 | |||
200546 | 1000 | |||
200547 | 2000 | |||
Flask with one mark and plastic stopper | 200548 | 2a | 25 | |
200549 | 50 | |||
200550 | 100 | |||
200551 | 200 | |||
200552 | 250 | |||
200553 | 500 |
Volumetric flasks 2nd class of accuracy GOST 1770-74
Name of product | vendor code | Use | Capacity, ml | Qty, pcs per pack | |
Volumetric flask with one mark | 200554 | 1 | 5 | 288/12 | |
200555 | 10 | 288/12 | |||
200556 | 25 | 304 | |||
200558 | 50 | 168 | |||
200560 | 100 | 105 | |||
200562 | 200 | 112 | |||
200564 | 250 | 105 | |||
200566 | 500 | 50 | |||
200568 | 1000 | 24 to 6 | |||
200569 | 2000 | 12 | |||
Volumetric flask with one mark and ground stopper | 200570 | 2 | 5 | 288/12 | |
200571 | 10 | 288/12 | |||
200573 | 25 | 288/12 | |||
200575 | 50 | 144/12 | |||
200577 | 100 | 96/12 | |||
200579 | 200 | - | |||
200581 | 250 | - | |||
200583 | 500 | - | |||
200584 | 1000 | 24 to 12 | |||
200585 | 2000 | - | |||
Volumetric flask with one mark and plastic stopper | 200586 | 2a | 25 | 300 | |
200587 | 50 | 168 | |||
200588 | 100 | 105 | |||
200589 | 200 | 112 | |||
200590 | 250 | 105 | |||
200591 | 500 | 50 | |||
Volumetric flask with two marks |
200592 | 3 | 50/55 | 158 | |
200593 | 100/110 | 75 | |||
200594 | 200/220 | 98 | |||
Volumetric flask with two marks and plastic. stopper | 200595 | 4a | 50/55 | 150 | |
200596 | 100/110 | 75 | |||
200597 | 200/220 | 98 |
VITLAB laboratory glass - this glass is made in Germany. But there is also laboratory glass Schott Duran, and do not forget about the Czech manufacturer "Simax", which produces glass of the highest quality.
Laboratory glass of Ukraine is produced in Poltava, but despite this, you can easily buy it in Kiev by calling our office of UKR-Chemistry LLC
The Bunsen flask, named after its inventor, German experimental chemist Robert Wilhelm Bunsen, looks like a thick-walled conical flask made of glass and equipped with a side arm (tube). The main purpose of such flasks is vacuum filtration, in which they are used as a receiver for filtrate, therefore the Bunsen flask is otherwise called a filter flask.
Vacuum filtration is a type of filtration in which, along with gravity, a vacuum created by a pump participates in the passage of a liquid through a filter. This method allows you to significantly speed up the filtration process, in some cases impossible under normal conditions. In addition, the vacuum contributes to a more complete separation of the sludge and facilitates its subsequent washing. However, there are also very important limitations on the vacuum filtration process. Thus, vacuum filtration cannot be used to filter concentrated solutions and low-boiling liquids while hot. In the first case, the precipitate strongly clogs the pores of the filter material, since due to the entrainment of a part of the liquid, the solution is cooled and concentrated on the lower part of the filter. When filtering low boiling liquids, the main danger is that the rapidly boiling hot liquid in the Bunsen receiving flask can enter the pump through the side outlet of the flask.
To create a vacuum during vacuum filtration, a water jet pump is most often used, which is connected to the side outlet of the Bunsen flask using flexible hoses or special adapters. Since, if the pump is suddenly turned off, water from the water supply system can get into the receiving flask, a safety vessel is often installed between it and the pump, which is most often Wolfe's multi-necked flask or Tishchenko's flask. The same intermediate vessel retains the filtrate in case of accidental release from the Bunsen flask, preventing it from entering the pump. Nevertheless, during operation it is necessary to control the level of the filtrate, promptly removing the accumulated liquid from the receiving flask and preventing its level from rising above the level of the tube.
Different types of filter flasks differ not only in their capacity, but also in the way of processing the neck. In the STYLAB online store there are Bunsen flasks with both smooth and ground neck, allowing the use of Schott funnels and other funnels with conical thin sections. The volume of the filter flasks varies greatly, making it easy to match the flask to the specific needs of your laboratory.
If necessary, the Bunsen flask for vacuum filtration can be replaced with a Würz flask or, in the case of small liquid volumes, with a test tube with a branch, as well as with any flask supplemented with a special nozzle with a tube. You can easily find adapters for flasks and other laboratory glassware in the corresponding sections of the STYLAB online store.
Making moonshine and alcohol for personal use
absolutely legal!
After the end of the existence of the USSR, the new government stopped the fight against moonshine. Criminal liability and fines were canceled, and an article banning the production of alcohol-containing products at home was removed from the Criminal Code of the Russian Federation. To this day, there is not a single law prohibiting us from engaging in our favorite hobby - making alcohol at home. This is evidenced by the Federal Law of July 8, 1999 No. 143-FZ "On Administrative Responsibility legal entities (organizations) and individual entrepreneurs for offenses in the field of production and circulation of ethyl alcohol, alcoholic and alcohol-containing products "(Collected Legislation Russian Federation, 1999, N 28, art. 3476).
Excerpt from the Federal Law of the Russian Federation:
"The effect of this Federal Law does not apply to the activities of citizens (individuals) who produce products containing ethyl alcohol not for the purpose of marketing."
Home brewing in other countries:
In Kazakhstan in accordance with the Code of the Republic of Kazakhstan On Administrative Offenses of January 30, 2001 N 155, the following liability is provided. So, according to article 335 "Manufacture and sale of home-made alcoholic beverages" illegal manufacture for the sale of moonshine, chacha, mulberry vodka, home brew and other alcoholic beverages, as well as the sale of these alcoholic beverages entails a fine in the amount of thirty monthly calculation indices with confiscation of alcoholic beverages , devices, raw materials and equipment for their manufacture, as well as money and other valuables received from their sale. However, the law does not prohibit the preparation of alcohol for personal use.
In Ukraine and Belarus things are different. Articles №176 and №177 of the Code of Ukraine on Administrative Offenses provide for the imposition of fines in the amount of three to ten tax-free minimum wages for making and storing moonshine without the purpose of selling, for storing without the purpose of selling devices * for its production.
Article 12.43 repeats this information almost word for word. "Making or purchasing strong alcoholic beverages (moonshine), semi-finished products for their manufacture (mash), storage of apparatus for their manufacture" in the Code of the Republic of Belarus on Administrative Offenses. Item No. 1 says: "Manufacturing individuals strong alcoholic beverages (moonshine), semi-finished products for their production (mash), as well as storage of devices * used for their manufacture - entail a warning or a fine of up to five basic units with the confiscation of these drinks, semi-finished products and devices. "
* Purchase moonshine stills for home use it is still possible, since their second purpose is to distill water and obtain components for natural cosmetics and perfumes.
A flask is a special glass vessel with a flat or round bottom and a narrow neck. Depending on the type and volume, the flasks can be used as a reaction vessel or as a volumetric disheswhen you need to prepare a solution with high analytical accuracy and accuracy. All flasks are made, regardless of volume and purpose, in accordance with GOST standards. All kinds of flasks are widely used in medical, pharmaceutical, scientific, petrochemical, manufacturing and industrial laboratories.
It is not recommended to heat the flasks with the solution over an open fire. There are special heating mantles for this.
One of the most commonly used glassware in the laboratory for many years is the signature flask - the Bunsen flask. - a kind of glassware for filtering chemicals and solutions. It is an integral part of a scientific or industrial laboratory. It is sometimes called a flask with a tube, based on its appearance... Flasks are made of special chemically and thermally resistant thick borosilicate or laboratory glass, which is not subject to destruction under the action of acids, alkalis and most other aggressive media - all this ensures the chemical purity of the experiment. The heat resistance of glass allows you to sterilize it, withstand various temperature and pressure drops, as well as mechanical stress. The strength of the laboratory glass of the vessel reduces the risk that such a flask will burst during laboratory work. All Bunsen flasks are made of transparent glass so that you can observe the ongoing processes.
The Bunsen flask is conical in appearance, in the upper part of which there is a branch for connection with a vacuum pump or with a vacuum line. Such a flask can be used for laboratory work under reduced pressure or in a vacuum.
What is a Bunsen flask for?
This type of flask is often used as an intermediate laboratory glassware between a reflux condenser and a steam source (vapor source). They are used for settling by-products obtained during the fermentation of alcohol - fusel oils and other harmful chemical reagents that settle on the walls of the reflux condenser. You can buy a dephlegmator at an affordable price on our website. In addition to filtering solutions, the Bunsen flask is used for sampling gaseous and liquid substances.
By volume given view flasks are:
- 100 ml;
- 250 ml;
- 500 ml;
- 1 l;
- 2 l;
- 2.5 l;
- 3 l;
- 5 l;
- 10 l.
Other types of flasks
In addition to the nominal Bunsen flask, Erlenmeyer flask (conical flask) is often used in laboratory practice. Such a flask has a conical shape with a flat bottom and a cylinder-shaped neck. It was invented over one and a half centuries ago by a German chemist.
Unlike the Bunsen flask, it has a graduated mark, which allows you to measure the volume of the investigated chemical solution, as well as an insert made of primed glass or white enamel so that you can make a mark with a pencil. The edges of the neck are slightly rounded, this allows you to close the flask with a cotton swab or rubber stopper. The convenient conical shape of the Erlenmeyer flask makes it easy to stir the contents of the solution during the study with one hand using a magnetic stirrer or laboratory shaker. The narrow shape of the neck prevents the liquid from spilling during the pouring process, keeps the liquid from evaporation. The flat bottom of the vessel allows you to stay firmly and securely on the surface. The main application of conical flasks is for titration of chemical solutions.
The Würz flask (round bottom) is used as laboratory glassware for distillation.
Flat-bottomed flasks are used as laboratory glassware for mixing several liquid substances, preparing various chemical reagents, as well as temporary storage of mixtures and liquids.
Buy laboratory glassware in Moscow: like Bunsen flasks, burettes with a tap, drip funnels and much more in a wide range of well-known trade marks for equipping the laboratory, profitable in the online store "Prime Chemicals Group".
Buying from "Prime Chemicals Group", you are purchasing high quality, durable, reliable laboratory glassware according to affordable prices... It is also possible to deliver any product both wholesale and retail in Moscow and the region.
And remember that only high-quality laboratory glassware, chemical reagents, laboratory equipment and instruments will bring the desired result of the research and experiments.
From Wikipedia, the free encyclopedia
Bunsen flask, also flask with tube, vacuum flask, in some countries also buchner flask or flask kitasaki - a flat-bottomed conical flask made of thick-walled glass with a tube (outlet). Bunsen flasks are mainly used for vacuum filtration. The creator is the German experimental chemist Robert Wilhelm Bunsen (1811-1899).
The Bunsen flask has different design options:
- The standard Bunsen flask is a conical, thick-walled flask with a side outlet.
- Bunsen flask with a lower tube, in which an additional tube is used to drain the filtrate with the disconnection of the vacuum source.
- Bunsen flask with a three-way valve, in which the filtrate can be drained without disconnecting the vacuum source.
Bunsen flasks are usually made of glass with a thickness of 3 mm to 8 mm. In the Russian Federation, Bunsen flasks are standardized as "flasks with a tube" in accordance with GOST 25336 (for their manufacture, heat-resistant glass of the TC grade is usually used in accordance with GOST 21400 or Simax ČSN ISO 3585). The upper conical part, intended for the installation of the filter funnel, can be smooth or ground for an interchangeable cone in accordance with GOST 8682. Flasks can also be made of metal or plastic.
A Bunsen flask is used mainly for vacuum filtration, in which this flask serves as a collection of filtrate. The Bunsen flask can be used for other purposes, for example, for the production of gases during chemical reactions, as well as as a safety vessel for vacuum processes.
Notes
Literature
- "Named" devices in the magazine "Chemistry"
- Stepin B. D. Technique of laboratory experiment in chemistry: Textbook. manual for universities. M .: Chemistry, 1999 .-- 600 s: ill.
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