GB/T 15725.5-1995 Laboratory glassware distillation flasks and fractionation flasks
Some standard content:
National Standard of the People's Republic of China
Laboratory Glassware
Distilling Flask and Fractionating Flask
Laboratoryglassware--Distillingflask1 Subject content and scope of application
GB/T15725.5-1995
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of distilling flask and fractionating flask.
This standard applies to distilling flask and fractionating flask for laboratory use. 2 Reference standards
GB191 Pictorial symbols for packaging, storage and transportation
GB2828 Batch inspection, counting sampling procedures and sampling tables (applicable to inspection of continuous batches) GB/T6579 Laboratory glassware thermal shock test method Test method and classification of glass resistance to erosion by boiling mixed alkali aqueous solution GB/T6580
Test method and classification of glass particles at 98°C GB/T6582 Physical
GB12213 Technical drawing glassware representation method GB/T15726 Glassware internal stress test method GB/T15728 Weight test method and classification of glass resistance to erosion by boiling hydrochloric acid QB517 Terminology of appearance defects of instrument glass products ZBQ30002 Method for determination of average linear thermal expansion coefficient of glass 3 Product classification
3.1 Types of fractionating flasks
Divided into Kjeldahl fractionating flask and Vickers fractionating flask. 3.2 Specification series
3.2.1 Distillation flask
The specification series of distillation flask is: 50, 100, 250, 500, 1000, 2000, 3000 and 5000mL. 3.2.2 The specification series of fractionation flask (Kjerfelter) is: 50.100, 250, 500, 1000, 2000, 3000 and 5000mL. 3.2.3 The specification series of fractionation flask (Vickers) is: 500, 1000, 2000, 3000 and 5000mL. 3.3 Type and size
3.3.1 The type and size of distillation flask are shown in Figure 1 and Table 1. Approved by the State Bureau of Technical Supervision on October 24, 199530
Implementation on July 1, 1996
Ball outer diameterbzxz.net
51.0±1.0
64.0±1.5
85.0±2.0
105.0±2.0
131.0±3.0
166.0±3.0
185.0±3.0
223.0±3.0
GB/T15725.5—1995
Neck outer diameter
22.0±1.0
34.0±1.5
42. 0±2.0
50.0±2.0
Full height of bottle
135.0±3.0
150.0±3.0
200.0±4.0
250.0±4.0
300.0±4.0
408.0±5.0
450.0±5.0
530.0±5.0
For the types and dimensions of fractionation flask (Kjerg), see Figure 2 and Table 2. 3.3.2
Minimum wall thickness
Branch length
80.0±3.0
100.0±3.0
125.0±3.0
150.0±4.0
180.0±5.0
225.0±5.0||tt ||250.0±5.0
290.0±5.0
branch outer diameter
10.0±0.4
11. 0±0.4
12.0±0.4
ball outer diameter
51.0±1.0
64.0±1.5|| tt||85.0±2.0
105.0±2.0
131.0±3.0
166.0±3.0|| tt||185.0±3.0
223.0±3.0
Neck outer diameter
20.0±1.0
2 3.0±1.0
25.0±1.0
30.0±1.5
36.0±1.5
46.0 ±2.0 | tt||350.0±5.0
410.0±6.0
450.0±6.0
500.0±6.0
Minimum overall thickness
For the types and dimensions of fractionating flask (Vickers), see Figure 3 and Table 3. Outer diameter of Kirschner tube
18.0±1.0
20.0±1.0
22.0±1.0
25.0±1.0
30.0±1.5
35.0±1.5
40.0±2.0
45.0±2.0
Branch length
80.0±3 .0
100.0±3.0
125.0±3.0
150.0±4.0
180.0 ±5.0
225.0±5.0
250.0±5.0
290.0±5.0
branch outer diameter
10.0±0,4
11.0±0.4
12.0±0.4
ball outer diameter
1 05.0±2.0
131.0±3.0
166.0±3.0
186.0±3.0
223.0±3.0
4Technical requirements
Neck outer diameter
GB/T15725.51995
1270.0±4.0
30.0±1.5
.36.0±1.5
46.0±2.0
56.0±2.0
350.0±5.0
410.0±6.0
500.0±6.0
Minimum integral
Vickers tube outer diameter
25.0±1.0
32.0±1.5
35.0±1.5||t t||40.0±2.0
45.0±2.0
Side neck and bottleneck
35.0±5.0
40.0±5.0
45.0±8.0
60.0±10.0
80.0±15.0
Branch length
Branch outer diameter
10.0±0.4
11.0Branch 0.4
12.0±0.4
4.1 Material
Distillation flask and fractionation flask should be made of borosilicate glass with appropriate chemical and thermal stability, preferably 3.3 borosilicate glass.
4.1.1 The linear expansion coefficient and water resistance, acid resistance and alkali resistance shall meet the requirements of Table 4. 33
Chemical properties
GB/T15725.5—1995
Linear expansion coefficient of glass in the range of 20～300℃ αWater resistance
Acid resistance
Alkali resistance
<5.5×10-*K-1
Note: When the buyer requires the heat shock resistance value of the flask with special specifications and wall thickness, the test can be carried out according to GB/T6579. Color
The glass used to make the flask should be colorless and transparent, and the light yellow-green color of the glass itself is allowed. Internal stress
The optical path difference value of birefringence should not exceed 180nm/cm. Structure
The neck of the flask should be consistent in thickness from top to bottom, and there should be no obvious bending. The neck and transition radius are approximately equal to the radius of the neck. The bottle mouth can be flanged or rounded. The weld must not be thinner than the thickness of the bottle body (S). 4.4 Appearance requirements
4.4.1 Bubbles
Thin-skinned bubbles and broken bubbles are not allowed to exist, and the diameter length is less than 0.The number of visually observable bubbles of 5mm shall not exceed 3 within the area of 10mm×10mm. At the same time, it shall not exceed the provisions of Table 5.
50~100
250~500
1000~3000
Bubble diameter, mm
Neck bubble diameter
Wall bubble diameter
Total number of bubbles in the neck and wall
Note: The bottom refers to the less than 1/6 (round bottom products) or 1/10 (flat bottom products) of the bottle body, the body refers to the more than 1/6 (round bottom products) of the bottle body, and the neck refers to the part below the bottle mouth and above the bottle body.
The number of visually observable nodules smaller than 0.5mm at the bottom shall not exceed 2 within the area of 10mm×10mm, and at the same time, it shall not exceed the provisions of Table 6.
50~100
250~500
1000~3000
Diameter of nodule, mm
Diameter of nodule in neck
Diameter of nodule in wall
Total number of nodules in neck and wall
4.4.3 Stones
GB/T15725.5—1995
Stones are not allowed at the bottom. There shall not be more than one stone less than or equal to 0.3mm that can be visually detected within 10mm×10mm on the body, and the size shall not exceed the requirements of Table 7.
50~100
250~500
1000~3000
Length of cervical stone
4.4.4 Streaks
No severe streaks are allowed (compare with samples). 4.4.5 Rust and iron filings
No obvious rust and iron filings that can be visually observed are allowed. 5 Test method
5.1 Size
The measuring tool is a 0.02mm vernier caliper. 5.2 Material
5.2.1 Linear expansion coefficient
The method is in accordance with ZBQ30002.
5.2.2 Water resistance
The method is in accordance with GB/T6582.
5.2.3 Acid resistance
The method is in accordance with GB/T15728.
5.2.4 Alkali resistance
The method shall be in accordance with GB/T6580.
5.3 Internal stress
The method shall be in accordance with GB/T15726.
5.4 Appearance requirements
The diameter of the stone on the wall
0.3～2.0
Use visual inspection, and the measuring tools are 0.02mm vernier caliper and 10 times reading magnifying glass. Thin-skinned bubbles are inspected by piercing with a pin, and the pierced ones are thin-skinned bubbles. 6 Inspection rules
6.1 Inspection categories
Product inspection is divided into two categories: factory inspection and type inspection. 6.2 Factory inspection (or delivery inspection)
Total number of stones in the neck and wall
6.2.1 Inspection items and requirements
Products shall be inspected according to the items and requirements specified in Table 8 before leaving the factory. Products that pass the inspection are allowed to leave the factory and must have a certificate of conformity before leaving the factory.
Inspection items
Structural dimensions
Internal stress
Appearance requirements
6.2.2 Batch
GB/T 15725.5—1995
Test items
Products of the same variety and specification delivered at the same time are considered a batch. 6.2.3 Random inspection method
Inspection shall be carried out in accordance with GB2828.
6.2.4 Sampling
The sampling plan type is a single sampling plan. 6.2.5 Inspection level
According to general inspection level 1.
6.2.6 Qualified quality level
The overall qualified quality level (AQL) is 6.5.6.3 Type inspection
6.3.1 Inspection items and requirements
Factory inspection
Type inspection
The items of type inspection are all items in Article 3.3 and technical requirements. The test methods in Chapter 5 shall be used to test and meet the requirements. 6.3.2 Type inspection shall be carried out in any of the following situationsa.
Trial production and identification of new products or old products for production conversion; after formal production, if there are major changes in structure, materials, and processes that may affect product performance: in normal production, periodic inspection shall be carried out regularly or after a certain amount of production has been accumulated. Type inspection shall be carried out at least once a year; when the product is stopped for more than half a year and then resumed; when the results of the factory inspection are significantly different from those of the last type inspection, and when the national quality supervision agency requires type inspection. 6.3.3 Sampling and batching rules
All samples shall be randomly selected from qualified products, and sampling shall be carried out in accordance with Article 6.2.4. The inspection sampling in Article 4.1 shall be prepared separately according to the sample requirements in Article 5.2.
6.4 Judgment rules
Inspect according to the items specified in Table 8. When all items meet the requirements, the batch of products is judged to be qualified. 7 Marking, packaging, transportation, storage
7.1 Marking
7.1.1 Flask marking
Nominal capacity: such as "100mL" or "100"; b.
Manufacturer name or registered trademark;
When the material of the flask is difficult to identify, the material should be indicated; c.
There should be a place on the bottle body that is suitable for marking with a pencil. 7.1.2 Packing box marking
The outer packaging should comply with G B191 related provisions; this standard number:
GB/T15725.5—1995
Product name, specification quantity, net space, gross space, volume c
d, manufacturer's name, registered trademark, production date, e: factory address, telephone, telegram.
7.2 Inner packaging
7.2.1 The inner packaging carton should have labels (product name, specification, quantity) on both ends. The packaging quantity should be a multiple of ten, not Do not use paper scraps, foam plastics and other fillers.
7.2.2 The total length, width and height of the carton used for the outer packaging should not exceed 1.5m (it should be rectangular). The outer edge of the packaging should be sealed, and the packaging tape should be tied into a parallel shape. The packaging should comply with transportation regulations.
7.3 Transportation
This product can be transported by any means of transportation. It must not be thrown during loading and unloading. Rain and snow protection measures must be taken during transportation. 7.4 Storage
The product should be stored indoors after packaging. Stacking height should not be too high. The thickness should not exceed ten layers. It is strictly forbidden to contact with strong acid, strong alkali and fluoride. Additional remarks:
This standard is proposed by China Light Industry General Association.
This standard is under the jurisdiction of the National Technical Committee for Glass Instrument Standardization. This standard was drafted by Beijing Glass Instrument Factory, and was jointly drafted by Tianjin Glass Instrument Factory, Shanghai Asia Pacific Technology Glass Company and Sangchuan Glass Instrument Factory.
The main drafters of this standard are Liu Jiajun, Zheng Limei, Chen Tingzhen, Chen Zhenlin and Qian Xiuting. 373 Internal stress
The method shall be implemented in accordance with GB/T15726.
5.4 Appearance requirements
Diameter of wall stones
0.3～2.0
Use visual inspection, and the measuring tools are 0.02mm vernier caliper and 10x reading magnifying glass. Thin-skinned bubbles are inspected by puncturing with a pin, and the punctured ones are thin-skinned bubbles. 6 Inspection rules
6.1 Inspection categories
Product inspection is divided into factory inspection and type inspection. 6.2 Factory inspection (or delivery inspection)
Total number of stones in the neck and wall
6.2.1 Inspection items and requirements
When the product leaves the factory, it shall be inspected according to the items and requirements specified in Table 8. Products that pass the inspection are allowed to leave the factory, and the products shall have a certificate of conformity when leaving the factory.
Inspection items
Structural dimensions
Internal stress
Appearance requirements
6.2.2 Batch
GB/T 15725.5—1995
Test items
Products of the same variety and specification delivered at the same time are considered a batch. 6.2.3 Random inspection method
Inspection shall be carried out in accordance with GB2828.
6.2.4 Sampling
The sampling plan type is a single sampling plan. 6.2.5 Inspection level
According to general inspection level 1.
6.2.6 Qualified quality level
The overall qualified quality level (AQL) is 6.5.6.3 Type inspection
6.3.1 Inspection items and requirements
Factory inspection
Type inspection
The items of type inspection are all items in Article 3.3 and technical requirements. The test methods in Chapter 5 shall be used to test and meet the requirements. 6.3.2 Type inspection shall be carried out in any of the following situationsa.
Trial production and identification of new products or old products for production conversion; after formal production, if there are major changes in structure, materials, and processes that may affect product performance: in normal production, periodic inspection shall be carried out regularly or after a certain amount of production has been accumulated. Type inspection shall be carried out at least once a year; when the product is stopped for more than half a year and then resumed; when the results of the factory inspection are significantly different from those of the last type inspection, and when the national quality supervision agency requires type inspection. 6.3.3 Sampling and batching rules
All samples shall be randomly selected from qualified products, and sampling shall be carried out in accordance with Article 6.2.4. The inspection sampling in Article 4.1 shall be prepared separately according to the sample requirements in Article 5.2.
6.4 Judgment rules
Inspect according to the items specified in Table 8. When all items meet the requirements, the batch of products is judged to be qualified. 7 Marking, packaging, transportation, storage
7.1 Marking
7.1.1 Flask marking
Nominal capacity: such as "100mL" or "100"; b.
Manufacturer name or registered trademark;
When the material of the flask is difficult to identify, the material should be indicated; c.
There should be a place on the bottle body that is suitable for marking with a pencil. 7.1.2 Packing box marking
The outer packaging should comply with G B191 related provisions; this standard number:
GB/T15725.5—1995
Product name, specification quantity, net space, gross space, volume c
d, manufacturer's name, registered trademark, production date, e: factory address, telephone, telegram.
7.2 Inner packaging
7.2.1 The inner packaging carton should have labels (product name, specification, quantity) on both ends. The packaging quantity should be a multiple of ten, not Do not use paper scraps, foam plastics and other fillers.
7.2.2 The total length, width and height of the carton used for the outer packaging should not exceed 1.5m (it should be rectangular). The outer edge of the packaging should be sealed, and the packaging tape should be tied into a parallel shape. The packaging should comply with transportation regulations.
7.3 Transportation
This product can be transported by any means of transportation. It must not be thrown during loading and unloading. Rain and snow protection measures must be taken during transportation. 7.4 Storage
The product should be stored indoors after packaging. Stacking height should not be too high. The thickness should not exceed ten layers. It is strictly forbidden to contact with strong acid, strong alkali and fluoride. Additional remarks:
This standard is proposed by China Light Industry General Association.
This standard is under the jurisdiction of the National Technical Committee for Glass Instrument Standardization. This standard was drafted by Beijing Glass Instrument Factory, and was jointly drafted by Tianjin Glass Instrument Factory, Shanghai Asia Pacific Technology Glass Company and Sangchuan Glass Instrument Factory.
The main drafters of this standard are Liu Jiajun, Zheng Limei, Chen Tingzhen, Chen Zhenlin and Qian Xiuting. 373 Internal stress
The method shall be implemented in accordance with GB/T15726.
5.4 Appearance requirements
Diameter of wall stones
0.3～2.0
Use visual inspection, and the measuring tools are 0.02mm vernier caliper and 10x reading magnifying glass. Thin-skinned bubbles are inspected by puncturing with a pin, and the punctured ones are thin-skinned bubbles. 6 Inspection rules
6.1 Inspection categories
Product inspection is divided into factory inspection and type inspection. 6.2 Factory inspection (or delivery inspection)
Total number of stones in the neck and wall
6.2.1 Inspection items and requirements
When the product leaves the factory, it shall be inspected according to the items and requirements specified in Table 8. Products that pass the inspection are allowed to leave the factory, and the products shall have a certificate of conformity when leaving the factory.
Inspection items
Structural dimensions
Internal stress
Appearance requirements
6.2.2 Batch
GB/T 15725.5—1995
Test items
Products of the same variety and specification delivered at the same time are considered a batch. 6.2.3 Random inspection method
Inspection shall be carried out in accordance with GB2828.
6.2.4 Sampling
The sampling plan type is a single sampling plan. 6.2.5 Inspection level
According to general inspection level 1.
6.2.6 Qualified quality level
The overall qualified quality level (AQL) is 6.5.6.3 Type inspection
6.3.1 Inspection items and requirements
Factory inspection
Type inspection
The items of type inspection are all items in Article 3.3 and technical requirements. The test methods in Chapter 5 shall be used to test and meet the requirements. 6.3.2 Type inspection shall be carried out in any of the following situationsa.
Trial production and identification of new products or old products for production conversion; after formal production, if there are major changes in structure, materials, and processes that may affect product performance: in normal production, periodic inspection shall be carried out regularly or after a certain amount of production has been accumulated. Type inspection shall be carried out at least once a year; when the product is stopped for more than half a year and then resumed; when the results of the factory inspection are significantly different from those of the last type inspection, and when the national quality supervision agency requires type inspection. 6.3.3 Sampling and batching rules
All samples shall be randomly selected from qualified products, and sampling shall be carried out in accordance with Article 6.2.4. The inspection sampling in Article 4.1 shall be prepared separately according to the sample requirements in Article 5.2.
6.4 Judgment rules
Inspect according to the items specified in Table 8. When all items meet the requirements, the batch of products is judged to be qualified. 7 Marking, packaging, transportation, storage
7.1 Marking
7.1.1 Flask marking
Nominal capacity: such as "100mL" or "100"; b.
Manufacturer name or registered trademark;
When the material of the flask is difficult to identify, the material should be indicated; c.
There should be a place on the bottle body that is suitable for marking with a pencil. 7.1.2 Packing box marking
The outer packaging should comply with G B191 related provisions; this standard number:
GB/T15725.5—1995
Product name, specification quantity, net space, gross space, volume c
d, manufacturer's name, registered trademark, production date, e: factory address, telephone, telegram.
7.2 Inner packaging
7.2.1 The inner packaging carton should have labels (product name, specification, quantity) on both ends. The packaging quantity should be a multiple of ten, not Do not use paper scraps, foam plastics and other fillers.
7.2.2 The total length, width and height of the carton used for the outer packaging should not exceed 1.5m (it should be rectangular). The outer edge of the packaging should be sealed, and the packaging tape should be tied into a parallel shape. The packaging should comply with transportation regulations.
7.3 Transportation
This product can be transported by any means of transportation. It must not be thrown during loading and unloading. Rain and snow protection measures must be taken during transportation. 7.4 Storage
The product should be stored indoors after packaging. Stacking height should not be too high. The thickness should not exceed ten layers. It is strictly forbidden to contact with strong acid, strong alkali and fluoride. Additional remarks:
This standard is proposed by China Light Industry General Association.
This standard is under the jurisdiction of the National Technical Committee for Glass Instrument Standardization. This standard was drafted by Beijing Glass Instrument Factory, and was jointly drafted by Tianjin Glass Instrument Factory, Shanghai Asia Pacific Technology Glass Company and Sangchuan Glass Instrument Factory.
The main drafters of this standard are Liu Jiajun, Zheng Limei, Chen Tingzhen, Chen Zhenlin and Qian Xiuting. 374 Storage
The product should be stored indoors after packaging. The stacking height should not exceed ten layers. It is strictly forbidden to contact with strong acid, strong alkali and fluoride. Additional instructions:
This standard is proposed by China Light Industry General Association.
This standard is under the jurisdiction of the National Technical Committee for Glass Instrument Standardization. This standard was drafted by Beijing Glass Instrument Factory, and was jointly drafted by Tianjin Glass Instrument Factory, Shanghai Asia Pacific Technology Glass Company, and Sangchuan Glass Instrument Factory.
The main drafters of this standard are Liu Jiajun, Zheng Limei, Chen Tingzhen, Chen Zhenlin, and Qian Xiuting. 374 Storage
The product should be stored indoors after packaging. The stacking height should not exceed ten layers. It is strictly forbidden to contact with strong acid, strong alkali and fluoride. Additional instructions:
This standard is proposed by China Light Industry General Association.
This standard is under the jurisdiction of the National Technical Committee for Glass Instrument Standardization. This standard was drafted by Beijing Glass Instrument Factory, and was jointly drafted by Tianjin Glass Instrument Factory, Shanghai Asia Pacific Technology Glass Company, and Sangchuan Glass Instrument Factory.
The main drafters of this standard are Liu Jiajun, Zheng Limei, Chen Tingzhen, Chen Zhenlin, and Qian Xiuting. 37
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.