1.5ml/2ml vials

1.5ml autosampler GC vial is a type of vial specifically designed for automatic sample injection in gas chromatography (GC) systems. These vials are typically made of glass or plastic and are used to contain liquid or solid samples that will be analyzed using a gas chromatograph.
Autosampler vials are designed to be compatible with automatic sample handling systems, allowing for efficient and precise sample introduction into the GC instrument.

2ml Autosampler HPLC Screw glass vials are small containers used in high-performance liquid chromatography (HPLC) analysis. They are designed specifically for use in autosamplers, which are instruments used to inject samples into the HPLC system automatically.
These vials are made of high-quality glass that is resistant to the solvents and chemicals commonly used in HPLC analysis. The vials have a capacity of 5 milliliters, which is the maximum volume of sample they can hold. The vials are typically clear or amber in color, with clear vials allowing for visual inspection of the sample, while amber vials provide protection against light-sensitive samples.

1.5ml Autosampler HPLC Screw glass vials are small containers used in high-performance liquid chromatography (HPLC) analysis. They are designed specifically for use in autosamplers, which are instruments used to inject samples into the HPLC system automatically.
These vials are made of high-quality glass that is resistant to the solvents and chemicals commonly used in HPLC analysis. The vials have a capacity of 1.5 milliliters, which is the maximum volume of sample they can hold. The vials are typically clear or amber in color, with clear vials allowing for visual inspection of the sample, while amber vials provide protection against light-sensitive samples.

HPLC vials are specially designed containers used to hold samples for injection into an HPLC instrument for analysis. These vials are made of high-quality materials such as borosilicate glass or plastic that are chemically inert and have minimal interaction with the sample.
HPLC vials are specially designed containers used to hold samples for injection into an HPLC instrument for analysis. These vials are made of high-quality materials such as borosilicate glass or plastic that are chemically inert and have minimal interaction with the sample.

2ml screw autosampler vial refers to a specific type of vial used in laboratories for the storage and analysis of samples. It is designed to be compatible with autosamplers, which are automated instruments used for sample handling and injection into analytical instruments such as gas chromatographs (GC) and liquid chromatographs (LC).
The “2ml” refers to the vial’s nominal volume, which is 2 milliliters. This volume indicates the maximum capacity of the vial. The vial typically has clear glass or sometimes amber glass construction, allowing for visibility of the sample contents. The vial is cylindrical in shape with a screw thread on the outer surface of the neck.

2ml UPLC (Ultra-Performance Liquid Chromatography) glass vial refers to a specific type of vial used in analytical chemistry for storing and handling liquid samples in UPLC systems. UPLC is a high-pressure liquid chromatography technique that allows for fast and efficient separation of compounds in a liquid sample.
These vials are specifically designed to withstand the high pressures and temperatures often encountered in UPLC systems. They are typically equipped with a screw cap or a snap-on cap to provide a secure seal and prevent leakage or contamination of the sample.

1.5/2ml autosampler vial refers to a type of sample container commonly used in analytical chemistry and laboratory settings.
The vial has a total volume capacity of 1.5 to 2 milliliters (ml).
Autosampler vials are designed to be compatible with automated liquid handling systems, such as autosamplers, which are used to inject samples into analytical instruments for analysis.
The vial typically consists of a cylindrical glass or plastic body with a narrow opening at the top.
It is sealed with a cap or septum to prevent sample contamination and evaporation.

1.5ml HPLC borosilicate glass vials are a type of autosampler vials specifically designed for use in High-Performance Liquid Chromatography (HPLC) applications.
HPLC is a widely used analytical technique that separates, identifies, and quantifies components in a liquid sample.
1.5ml HPLC borosilicate glass vials are commonly used in pharmaceutical, environmental, and other analytical laboratories where HPLC analysis is performed.

2ml lab autosampler vial is a small container typically used in laboratory settings to store and transport samples for analysis.
Autosampler vials are designed to be compatible with automatic sampling systems or instruments known as autosamplers.
The capacity of a 2ml autosampler vial refers to its volume, and it can hold up to 2 milliliters (2 ml) of liquid or sample.
These vials are commonly made of glass or high-quality plastic materials such as polypropylene or polymethylpentene (PMP).
The choice of material depends on the specific application and compatibility requirements.

Chromatography autosampler vials are widely used in chromatography, chemistry, medical and other fields. Autosampler vials are generally made of hydrolytic glass or borosilicate, with various specifications. Different vial mouth designs meet different actual needs.

1.5ml/2ml Screw neck HPLC clear vials are a type of vial used in high-performance liquid chromatography (HPLC) applications.
HPLC clear vials are made from clear glass, typically borosilicate glass, which offers excellent visibility and chemical resistance.
The clear glass allows for easy visual inspection of the sample and facilitates accurate volume measurements.
These vials are specifically designed to meet the requirements of HPLC applications, which often involve sensitive and precise analyses.
Screw neck HPLC clear vials are a type of vial used in high-performance liquid chromatography (HPLC) applications.

1.5ml/2mlSnap autosampler borosilicate glass vial refers to a type of vial commonly used in laboratory settings for sample storage and analysis.
Borosilicate glass is chosen for its excellent resistance to thermal shock, chemical durability, and low contamination potential.
The term “Snap autosampler” typically refers to an automated instrument used in analytical chemistry, specifically in chromatography.
It is designed to automatically inject samples into the chromatographic system for analysis.
The vials used with such autosamplers need to be compatible with the instrument’s design and specifications.

2 ml 9 mm silicone vials with polypropylene caps are commonly used in various industries, including pharmaceuticals, biotechnology, and laboratory settings.
These vials are designed to store and protect sensitive substances, such as medications, chemicals, or biological samples, ensuring their integrity and preventing contamination.
The combination of a silicone-lined vial and a polypropylene cap provides a secure and reliable storage solution for sensitive materials.
It helps to safeguard the contents from external contaminants, moisture, and potential degradation.

2ml screw HPLC borosilicate glass vials are commonly used in high-performance liquid chromatography (HPLC) for sample containment. These vials are specifically designed to meet the requirements of HPLC analysis and are made from borosilicate glass.
Borosilicate glass is chosen for its excellent properties that make it suitable for HPLC applications. It has high resistance to thermal shock, meaning it can withstand rapid changes in temperature without breaking.
This is important in HPLC, where samples are often subjected to heating and cooling cycles during the analytical process.

2ml 9mm fisher screw autosamplers are automated instruments commonly used in analytical laboratories for sample handling and injection into analytical instruments such as gas chromatographs (GC) or liquid chromatographs (LC).
Fisher Scientific offers a wide range of laboratory equipment, including autosamplers from various manufacturers.
Borosilicate glass vials are commonly used in laboratory and pharmaceutical settings for the storage and transportation of various liquid or solid samples.
Borosilicate glass is a specialized type of glass that contains boron trioxide, which gives it unique properties compared to regular soda-lime glass.

Borosilicate glass is a type of glass that is known for its high resistance to heat and thermal shock. It is composed primarily of silica and boron oxide, which give it its unique properties.
Borosilicate glass has a low coefficient of thermal expansion, meaning it does not expand or contract significantly when exposed to changes in temperature. This makes it highly resistant to thermal stress and allows it to withstand rapid temperature changes without breaking.
Overall, borosilicate glass is valued for its exceptional thermal properties, chemical resistance, and optical clarity. Its versatility and durability have made it a preferred material in various industries, particularly in laboratory settings and for specialized glassware applications.

2ml screw cap borosilicate glass vial with closure is a type of laboratory container commonly used for the storage, transport, and handling of liquid or solid samples. It consists of a borosilicate glass vial and a screw cap closure that provides a secure seal. When using screw cap borosilicate glass vials with closures, it is important to handle them carefully to avoid breakage or damage. Proper labeling and documentation should be applied to ensure accurate sample identification and traceability.

Silver aluminum caps ND11 refer to a specific type of closure used for sealing vials or containers with an ND11 neck size. ND11 refers to the outer diameter of the vial’s opening, which is a standardized measurement in the laboratory industry.

Silver aluminum caps are commonly used in laboratory settings due to their durability, chemical resistance, and ability to provide a secure seal. Here are some key features of silver aluminum caps

2ml snap top chromatography autosampler borosilicate glass vials are commonly used in analytical laboratories for storing and handling samples in chromatography applications. These vials are designed to fit into autosampler systems, which are used for automated injection of samples into chromatography instruments such as gas chromatographs (GC) or liquid chromatographs (LC).When using 2ml snap top chromatography autosampler borosilicate glass vials, it is important to handle them carefully to prevent breakage and ensure a proper seal. Proper labeling and storage of the vials are also recommended to maintain sample integrity and traceability.

4ml borosilicate glass vials are commonly used in high-performance liquid chromatography (HPLC) for sample storage and analysis. Borosilicate glass is preferred in HPLC because it offers excellent chemical resistance and thermal stability, making it suitable for handling a wide range of solvents and temperature conditions.When working with water samples in HPLC, borosilicate glass vials are a suitable choice due to their resistance to water and other polar solvents.

HPLC (High-Performance Liquid Chromatography) chromatography vials are specialized containers designed for use in HPLC analysis. These vials are made from inert materials that do not interact with the sample or the mobile phase, ensuring accurate and reproducible results.When selecting HPLC chromatography vials, it is important to consider factors such as the sample type, analysis requirements, and the specific HPLC system being used.

2 ml HPLC borosilicate glass vials are commonly used in high-performance liquid chromatography (HPLC) for sample storage and analysis. Borosilicate glass is preferred in HPLC because it offers excellent chemical resistance and thermal stability, making it suitable for handling a wide range of solvents and temperature conditions.When working with water samples in HPLC, borosilicate glass vials are a suitable choice due to their resistance to water and other polar solvents.

9-425 Screw Cap 2ml HPLC vial is a type of vial commonly used in High Performance Liquid Chromatography (HPLC) applications. It is designed to hold samples for analysis in HPLC systems.The vial has a capacity of 2ml, which refers to the maximum volume of liquid it can hold. The 9-425 designation indicates the thread size and type of the screw cap, which is compatible with specific autosampler systems.These vials are widely used in chromatography laboratories for the storage and analysis of liquid samples in HPLC systems.

Autosampler borosilicate glass vials are specifically designed for use in autosamplers, which are automated instruments used in high-performance liquid chromatography (HPLC) and other analytical techniques. These vials are constructed from borosilicate glass, known for its excellent chemical resistance and thermal stability.hen selecting autosampler borosilicate glass vials, it is essential to consider factors such as vial size, closure compatibility, and the specific requirements of your autosampler instrument.

2 ml borosilicate glass vials are commonly used in high-performance liquid chromatography (HPLC) for sample storage and analysis.Borosilicate glass is preferred in HPLC because it offers excellent chemical resistance and thermal stability, making it suitable for handling a wide range of solvents and temperature conditions.When working with water samples in HPLC, borosilicate glass vials are a suitable choice due to their resistance to water and other polar solvents.

PTFE (polytetrafluoroethylene) silicon vials, also known as PTFE-lined silicon vials, are specialized containers commonly used in pharmaceutical and laboratory settings. These vials are designed to provide a high level of chemical resistance and inertness, making them suitable for storing and transporting sensitive or reactive substances.TFE silicon vials are commonly used for storing and transporting pharmaceutical drugs, particularly those that are sensitive to interactions with container materials.

2 ml 10-425 autosampler borosilicate glass vials are specifically designed for use in autosamplers, which are automated instruments used in high-performance liquid chromatography (HPLC) and other analytical techniques. These vials are constructed from borosilicate glass, known for its excellent chemical resistance and thermal stability.When selecting autosampler borosilicate glass vials, it is essential to consider factors such as vial size, closure compatibility, and the specific requirements of your autosampler instrument.

2 ml snap HPLC 5.0 borosilicate glass vials are a specific type of vial designed for use in high-performance liquid chromatography (HPLC) applications. These vials are characterized by their snap cap closures, which provide a convenient and secure sealing mechanism.It’s also essential to select the appropriate vial size to accommodate your sample volume and ensure compatibility with your HPLC autosampler.

2ml Clear/Amber Hplc borosilicate glass vials are commonly used in high-performance liquid chromatography (HPLC) for sample storage and analysis.orosilicate glass is preferred in HPLC because it offers excellent chemical resistance and thermal stability, making it suitable for handling a wide range of solvents and temperature conditions.

2 ml 9 mm HPLC vial kits are convenient packages that include a selection of vials, caps, and septa specifically designed for use in high-performance liquid chromatography (HPLC) applications. It ensures compatibility between vials, caps, and septa, reducing the risk of mismatched or incompatible parts that can compromise sample integrity and analysis results.

2ml UPLC (Ultra-Performance Liquid Chromatography) is a high-pressure liquid chromatography technique used for separating and analyzing chemical compounds. When working with UPLC, it’s important to choose appropriate vials and caps to ensure sample integrity and compatibility with the system.

2 ml clear crimp neck vial is a type of vial commonly used in laboratory settings for storing and handling liquid samples or reagents.Clean the vials thoroughly before use to avoid contamination, and use a crimping tool to apply the cap or closure securely.

2 ml snap top autosampler borosilicate glass vials are a specific type of vials commonly used in analytical laboratories and automated sample handling systems. They are designed for convenient and secure sealing, as well as compatibility with autosamplers for efficient sample handling.

2ml / 1.5ml glass crimp vials with crimp seals for hplc autosampler
Crimp the caps to the vials with the hand crimper
100pcs per pack, aluminum caps with ptfe silicone septa, 100pcs per pack

9-425 short thread vials with screw caps wholesale, the best supplier in China
Aijiren provides chromatography vials, caps, vial inserts, syringe filters for hplc, glass reagent bottles, etc
Suitable for most autosampler use in the market

Standard GC, HPLC sample vial, small caliber, 8-425 standard threaded mouth, can be used for autosampler and sample storage. It can be used with 8-425 screw cap septum.
8-425 Autosampler Vial, often used in conjunction with Shimadzu, Spectrophysics, Varian, and other autosamplers. The vial is made of colorless Class 1 Type A or Amber Class 1 Type B borosilicate glass , And attached with a writable label for sample identification.

10mm sample bottles are widely used in the pretreatment of samples analyzed by gas chromatography and liquid chromatography. With the development of testing technology and the improvement of testing standards, the quality requirements for sample bottles have also increased. The 10mm large opening of Aiji can effectively prevent the risk of injection needle deviation.

9 mm screw top vial, 32×11.6 mm, clear glass, high recovery, borosilicate glass
1.5ml vial with 30ul reservoir for sample concentration and injection, no transfer to micro insert

9mm thread screw neck vial, 32×11.6mm, transparent / amber PP, with graduation line, slightly concave shaped bottom
Preassembled cap and septafor 9mm thread screw PP cap, blue, centrel hole, PTFE/Silicone 9x1mm

Product name: 1.5/2ml sample vial plastic PP material

Packing: vial, boxed (100 pcs/box)/caps and septa  bag (100 pcs/pack)
Size: Vial (11.6*32mm) / Gasket (Φ9*1mm)
Material: Vial (PP) / Gasket (Teflon / Silicone) / Cap (Polypropylene)
Gasket performance: acid resistance, alkali resistance, temperature resistance, anti-sticking

crimp vial is compatible with all 2mL vial autosamplers, 2mL, 11.6x32mm.11X1mm Teflon/silicone septa, 11mm crimp top sample vials and micro-inner tubes, vapor/liquid vials

The crimp type vial, bottom diameter is 11.6mm, the height is 32mm, the neck diameter is 11mm. Actual capacity 2mL, standard capacity 1.5mL

The crimp top provide the tightest seal, reducing the possibility of sample volatilization. The 12X32mm crimp vial and aluminum cap are the most economical choice, and it is also very convenient to use with the crimp tool.

The 2ml snap autosampler vial is often used in conjunction with the automatic sampler. The vial is made of colorless Class 1 Type A or Amber Class 1 Type B borosilicate glass with a writable label for sample identification.

Features: 32*11.6mm vial; 11*1mm Teflon/silicone septa; 11mm white open PP cover. It can be used on various autosamplers.

The sample vial and caps have strict size standards and can be matched with various models of autosamplers such as Aijiren, Waters, Varian, and Shimadzu.

Brand: Aijiren
Mouthful capacity: 2.0ml
Material: made of grade 1 hydrolyzed glass
Color: brown
Whether OEM processing: Yes
Packing: 100 pcs/box, packed in PP plastic pallet box

Approximately 40% larger than a normal small neck
The increase of the target area makes sample preparation easier
Large diameter is specially designed for automatic samplers such as Waters
The large-mouth design reduces the probability of bending and damage of the sample needle during the needle sampling process

Capacity: 1.5/2ml
Temperature: -60—200℃
Material: bottle (domestic borosilicate); gasket (Teflon/silicone); lid (polypropylene)
Color: bottle (transparent/amber), cap (blue)

9mm standard 2ml short threaded sample vial(2ml autosampler vial), 2ml, 12×32mm, neck diameter 9mm; red PTFE/white silicone vial gasket, blue perforated polypropylene (PP) vial cap, sample vial has Transparent, amber, transparent with scale writing, and amber with scale writing are available for selection, suitable for various models of autosamplers such as Aijiren, Waters, Varian and Shimadzu.

The aijiren chromatography sample vial is made of borosilicate glass and meets ASTM TYPE I ClassA and USP TYPE I standards.
There are four types: colorless and amber vial, handwriting area and no handwriting area.

9mm screw thread caps, septa, and vials are designed especially for use with Aijiren’s and other rotating or robotic are samplers
2ml 12*32mm clear borosilicate glass vial,with a write-in patch; high quality polypropylene caps, ptfe / silicone septa can be pre-slit to easy needle penetration

Standard GC, HPLC sample vial, small caliber, 8-425 standard threaded mouth, can be used for autosampler and sample storage. It can be used with 8-425 screw cap septum.
8-425 Autosampler Vial, often used in conjunction with Shimadzu, Spectrophysics, Varian, and other autosamplers. The vial is made of colorless Class 1 Type A or Amber Class 1 Type B borosilicate glass , And attached with a writable label for sample identification.
The vial cap is made of high-quality polypropylene, with precise manufacturing tolerances and a controllable manufacturing environment. The gasket is made of the highest quality PTFE/silicone to ensure the high efficiency of the function.

1.5ml/2ml 8-425 autosampler vial (Shimadzu chromatography sample vial) is provided by Zhejiang Aijiren Rechnology Co., Ltd., instead of imported Shimadzu sample bottle, standard GC, HPLC sample bottle, 5MM caliber, 8-425 standard Threaded port can be used for autosampler and sample storage. It can be used with 8-425 screw cap septum. The bottle cap is made of high-quality polypropylene, and the septum is manufactured with high-quality materials to ensure the efficiency of the function.
Applicable to: Beckman, Diane, Finnigen, Gilson, LKB, Thermoelectric Thermo, Varian Varian, Shimadzu and other autosamplers.

The thread design of the 8-425 threaded sample vialcan make the septum achieve extremely strong re-tightness, so this sample vial can also be used as a storage vial, and it can also be used for autosampler. This design sample vial is mostly suitable for Shimadzu Hitachi and other Japanese enterprise instruments.

Vial Closure Size: 9mm
Vial Volume (Metric) 1.5mL
Volume (Metric) Working 1.3mL
Material: Glass
Color: Amber
Height (Metric) 32mm
Outside Diameter (Metric) 12mm
Residual Volume:

Amber Borosilicate Glass
ND9mm Screw Neck Vial
11.6*32mm
With Writing Spot
9mm Blue Short Screw PP Cap
with 6mm Centre Hole
Pre-slit / non-slit PTFE Silicone Septa
Septa Size: 9*1mm

Material: Borosilicate glass
Finish Type: Screw Neck
Color: Clear / amber
Size: 11.6*32mm
Cap: Black Polypropylene Cap
Closed-top or with 5.5mm center hole
PTFE/silicone Septa
with pre-slit

Material: Brosilicate Glass/1st hydrolytic class glass
Volume: 1.5-2.0ml
Dimension: 11.6x32mm
Neck: 9mm Screw neck
Color: Amber and Clear
Septa: Pre-Slit, PTFE/Silicone
OEM & ODM Custom Service

Neck Type: Screw, Snap / Crimp
Neck Diameter: 8-425, 9mm, 10-425, 11mm
Color: Clear / Amber
Graduated: with or without
Material: Borosilicate Glass

Glass Screw Vials ND9mm for HPLC, Clear & Amber, with /without Patch
High Recovery Glass Screw Vials ND9mm, Clear & Amber, with /without Patch
0.3ml Glass Screw Vial integrated with Micro-insert, Base Bonded, Clear & Amber, with /without Patch
PP Screw Vials ND9mm, Clear & Amber
0.3ml PP short Screw Micro Vials, Clear & Amber

Suit for: 9mm Short Thread Vials
Caps Material: polypropylene
Cap Diameter: 9mm
Cap Features: 6mm Centre Hole or Closed Top
Septa Material: PTFE / Silicone
Septa Feature: Pre-slit I or X
Septa diameter: 9mm
Septa Thickness: 1mm

Suitable for 11mm 2ml Crimp Neck Vials & 20mm Headspace GC Vials
Caps Material: Aluminum
Use Together with PTFE/Silicone Septa or Rubber Stopper
Color: Metal Silver
Vial Septa & Rubber Stopper and Crimpers are also Provided

9mm Blue Plastic Screw Caps is suitable for: 9mm Short Thread HPLC Vials
Caps Material: polypropylene, size: 11.5*6mm, inner diameter: 9mm, with 6mm Centre Hole or Closed-Top
Color: usually blue, other colors are also provided, such as red, black, yellow, etc
The Septa are PTFE / silicone, size: 9*1mm, the sapta could be pre-slit

Aijiren’s 9-425 Autosampler Vials are available in clear and amber colors, and Aijiren produces Cap with Septa that is matched with 9-425 Autosampler Vials. Only the Closures made of Screw Thread’s 9mm diameter PP are compatible. Septa uses PTFE and Silicone is compounded without adhesives to ensure the stiffness and quality of Septa.

Aijiren 9-425 HPLC Vial can choose the type with writing area and scale for easy filling and identification of samples. Aijiren 9-425 sample vials can be used with the robotic arm autosampler. The opening of the 9mm sample vial is 40% larger than that of ordinary vials to facilitate sample preparation. The Aijiren 9-425 sample vial must be used together with the 9mm screw pp bottle cap. Ensure proper fit and function.

Aijiren’s 9mm hplc vials are very suitable for Autosampler, especially Aijiren’s machines, because Aijiren’s 9mm hplc vials have a long neck to facilitate the grasping of instruments, and the bottom is flat and easy to place in the sampling area, and the accuracy of the thread is guaranteed Improved the sealing performance of 9mm hplc vials. In addition, Aijiren’s Cap and Septa have types that are convenient for Autosampler to puncture. Cap has a center hole, and Septa is very convenient for puncture.

9mm Closures are formed by the combination of Cap and Septa. Screw Neck guarantees the tightness of 9mm Closures. Generally speaking, one end of PTFE faces the sample surface, because PTFE is highly inert and difficult to react with chemicals. Aijiren also supports separate orders for Cap and Septa.

11mm Snap Top Closures are made of PP. The translucent Cap design allows users to see the fixed card slot. The inside of the Snap Cap has 4 protrusions for fixing in the lateral groove of the Vial Neck.

Aijiren understands that 2ml HPLC vial are as important as chromatography columns or instruments. As a result, Aijiren 2ml HPLC sample vial are designed to meet the highest standards you can expect. So 2ml HPLC vial can be exported to 32 countries.

Caps are made of high quality polyproylene to exact manufacturing tolerances and lined in a controlled manufacturing environment, Cap colors are available in black only, Our septa use only the highest quality materials to ensure proper function and can be pre-slit to ease needle penetration.

Aijiren’s chromatography bottle has a wide-mouth crimp cap that provides a larger target area and improves the accuracy of the autosampler needle. Can be made of clear and amber glass. The label can be written area, can help the experimenter to distinguish the sample type.

The Crimp Vial produced by Aijiren has a standard 11.6x32mm shape and is compatible with 11mm aluminum sealing caps. Hand Crimper is required for crimp sealing and Decrimper for unsealing. Aijiren provides supporting 11mm Hand Crimper and Decrimper, which are easy to operate and well sealed.

The opening of the vial produced by Aijiren is 40% larger than the standard opening aluminum sealed bottle
It is made of transparent Class 1 Class A or Amber, Class 1 Class B borosilicate glass
Sample vials provide standard progressive pasteable patches for easy filling and identification

The crimp vials produced by Aijiren are made of transparent or amber type 1 borosilicate glass or polypropylene. Requires crimper and lid opener. Very suitable for long-term storage. Deactivation and MS authentication can also be used.

All Aijiren vials are very suitable for autosamplers and have good chemical compatibility and ultra-cleanliness. The crimp top sample bottle is currently the most commonly used gas sampling bottle on the market. The sample bottle with a volume of 2ml is especially suitable for laboratory use. At the same time, the bottom of some sample bottles is designed with a round bottom, so it has a flat bottom function and is compatible with automatic sampling equipment.