China hplc filter vial supplier

Polypropylene vials are an economical alternative to glass for some applications. The vial is primarily constructed from high-quality, durable polypropylene or polymethyl pentene (PMP). This plastic is typically chosen for its chemical resistance, inertness, and transparency. Polypropylene is the most popular plastic material. Polypropylene vials have heat resistance of up to 135 degrees Celsius and are commonly used in chromatographic experiments. PMP has higher heat resistance – up to 175 degrees Celsius – and is transparent, increasing the sample’s visibility inside the sample bottle. The vial typically has a standard 9mm outer diameter, making it compatible with a wide range of autosampler systems commonly used in laboratories.

Teflon and silicone rubber or ultra-pure silicone are used as raw materials to ensure that the septum is non-toxic; the glue-free bonding process does not require the introduction of adhesives, and the septum retains the excellent resilience performance of silicone rubber or silicone, which is better than the glue-based process The septa are softer.

Short Thread Bonded Caps for screw thread vials are available with either an open hole for autosampler use and standard addition or with a solid top for sample storage. Teflon and silicone rubber or ultra-pure silicone are used as raw materials to ensure that the septa are non-toxic; Adhesive-free bonding process, without the introduction of adhesive, the septum retains the excellent resilience performance of silicone rubber or silicone, softer than the septum of the adhesive process, which can provide better needles for the autosampler. protection of. Strict production management ensures product quality. The Bonded Caps with Septa are clean and ready to use without cleaning.

2ml autosampler vials 9mm for HPLC system with bonded septa caps. Including: 100pcs Clear/amber bottles 32×11.6mm made of borosilicate glass, 2ml lab vials 9-425 screw thread, Flat base Sample Vials; Made out of USP TYPE I Glass. With writing patch for pencil mark.

Vial Dimension: 12x32mm
Vial Color: Amber and Clear
Vial Volume: 1.5-2.0ml
Vial Material: Borosilicate Glass/Glass Type 1
Application: Lab consumables for analysis
Certification: ISO9001, SGS, COA

These 2ml clear chromatography vials include 100/PK of 2ml RSA-Pro™ surface-treated glass vials with 9mm screw threads. Any requirement about 2ml clear chromatography vials,please contact AIJIREN.
Volume: 2ml
Usage: Laboratory Analysis
Brand Name: AIJIREN
Printing with Company Logo: Accept

Vial Dimension: 12x32mm
Vial Color: Amber and Clear
Vial Volume: 1.5-2.0ml
Vial Material: Borosilicate Glass/Glass Type 1
Sample: Free
Payment: 100% T/T in advance
Certificate: ISO9001:2015

Aijiren is the leading supplier of chromatography consumables, can offer hplc vials,hplc syringe filter, EPA VOA vials, and some other test tubes.
Any requirement for chromatography consumables, please contact us.

Micro Insert is used to ensure the most accurate and reliable analysis of your lab samples. Micro-inserts are manufactured of clear glass. Micro inserts, when used in conjunction with autosampler vials, allow for maximum sample recovery and easier sample removal because the conical shape decreases the surface area inside the vial.
Micro inserts can be used with screw tops, crimp tops, or snap-top vials. All conical styles of inserts are offered with the traditional pulled point as well as the improved mandrel point. Pulled point inserts are more economical, but mandrel point inserts provide a more pointed and uniform tip that enables better sample recovery. Micro-inserts can be used on all 1.5ml vials. Effectively relieves the pressure of the syringe. PolySpring inserts are self-aligning.

Aijiren 9MM hplc vials offer the lowest ion content possible to reduce sample loss and contamination.
OEM: Available
Sample: Provided Freely
Packing: 100pcs/pk
Material: Borosilicate Glass

Materials of construction: pp chamber, PP plunger outer housing, borosilicate glass plunger inner storage vial, silicone septa with PTFE liner, PP cap
Vial Size: 12 x 32 mm
Pore Size: 0.22um and 0.45um
Capacity:
Unfiltered sample chamber: 500 µL
Filtered sample chamber: 330 µL

Items: Micro Insert vials
OEM: Available
Sample: Provided Freely
Packing: 100pcs/pk
Material: Borosilicate Glass
Borosilicate Glass material provides higher quality material that is more resistant to thermal shock
The integrated insert supports samples of the highest purity and sensitivity
Amber color provides for an increased shelf life optimal for storage of samples of light-sensitive samples
The highest quality ISO9001:2015 certification in the industry ensures the most accurate analysis of samples

The 9mm Short Thread Caps that are included with this kit are knurled on the sides for excellent gripping and comfort when applying to the vial. Caps for screw thread vials are available with either an open hole for autosampler use and standard addition or with a solid top for sample storage.Screw Cap Vials are universal. Screwing the cap applies a mechanical force that squeezes the septum between the glass rim and the cap.

1.5ml Glass High Recovery Vial,12 dia x 32 mm H, Clear or Amber, Solid Glass, Large Opening Style, High Recovery, 9 mm Neck Finish, One Piece Conical Design Allowing Complete Sample Recovery
High Recovery Vial to minimize adsorption of polar compounds, including amino acids, proteins, and phenols to the inner surface of the vial. High-recovery vials deliver high sample capacity with very low residual volume. Use total-recovery vials for maximum sample recovery. These high-quality 9mm clear glass vials are 2mL, 12x32mm, and fit most brands of autosamplers. Made of superior quality borosilicate clear, they meet all requirements of US, EU, JPN Pharmacopia

2ML Autosampler Vials are ubiquitous in analytical laboratories and vendors have developed many varieties to meet the various needs of scientists.
Vial Thread: Screw
Cap: Plastic open/solid cap
Septa: Non-slit, Pre-Slit, PTFE/Silicone
Characteristic: Consistency at quantification levels
Highly reproducible for samples >120µL
Long-term sample stability for most analytes
High solvent compatibility for mainstream HPLC and GC applications
Compatible with standard HPLC and GC autosamplers

Application: Lab consumables for analysis
Certification: ISO9001, SGS, COA
Vial Thread: Screw
Cap: Plastic open/solid cap
OEM: Available
Sample: Provided Freely
Packing: 100pcs/pk

Aijiren clear glass vial inserts, polypropylene vial inserts, and high recovery vials ensure you extract the maximum possible amount of your precious sample.
Material: Borosilicate Glass
Working Volume (mL): 0.3mL
Working Volume (μL): 300 μL
Bottom: Flat
Insert: Conical, base bonded, integrated insert

Vial Dimension: 12x32mm
Vial Color: Amber and Clear
Vial Volume: 1.5-2.0ml
Vial Material: Borosilicate Glass/Glass Type 1
Application: Lab consumables for analysis
Certification: ISO9001, SGS, COA

Main applications for Plastic vials are atomic absorption, water and protein analysis, capillary electrophoresis, ion chromatography etc.
Optimal choice when working with proteins. Ideal for IC applications

Item No: Aijiren hplc filter vials for sale
Vial Size: 12 x 32 mm
Pore Size: 0.22um and 0.45um
Capacity:
Unfiltered sample chamber: 500 µL
Filtered sample chamber: 330 µL
Maximum operating temperature: 122°F (50°C)

Maximum operating temperature: 122°F (50°C)
Minimum filtering sample volume: 220 µL placed into the chamber to obtain a 50 µL filtered sample
Vial Size: 12 x 32 mm
Pore Size: 0.22um and 0.45um
Capacity:
Unfiltered sample chamber: 500 µL
Filtered sample chamber: 330 µL
Maximum operating temperature: 122°F (50°C)

Logo: Customized Accepted
OEM: Available
Sample: Provided Freely
Packing: 100pcs/pk
Material: Borosilicate Glass
Payment: 100% T/T in advance

Cap: Plastic open/solid cap
Septa: Non-slit, Pre-Slit, PTFE/Silicone
Characteristic: Consistency at quantification levels
Highly reproducible for samples >120µL
Long-term sample stability for most analytes
High solvent compatibility for mainstream HPLC and GC applications
Compatible with standard HPLC and GC autosamplers
Customization:
Customized logo(Min. Order: 300 Packs)
Customized packaging(Min. Order: 400 Packs)

Vial Dimension: 12x32mm
Vial Color: Amber and Clear
Vial Volume: 1.5-2.0ml
Vial Material: Borosilicate Glass/Glass Type 1
Application: Lab consumables for analysis
Certification: ISO9001, SGS, COA

Vial Dimension: 12x32mm
Vial Color: Amber and Clear
Vial Volume: 1.5-2.0ml
Vial Material: Borosilicate Glass/Glass Type 1
Application: Lab consumables for analysis
Certification: ISO9001, SGS, COA

9mm screw thread caps and vials are suitable for Agilent, AB Sciex, Brukers, Techcomp, PerkinElmer, ThermoScientifics, Shimadzu, Waters, CTC autosampler and other rotating or robotic arm samplers and autosamplers.

Polypropylene vials are an economical alternative to glass for some applications. The vial is primarily constructed from high-quality, durable polypropylene or polymethyl pentene (PMP). This plastic is typically chosen for its chemical resistance, inertness, and transparency. Polypropylene is the most popular plastic material. Polypropylene vials have heat resistance of up to 135 degrees Celsius and are commonly used in chromatographic experiments. PMP has higher heat resistance – up to 175 degrees Celsius – and is transparent, increasing the sample’s visibility inside the sample bottle. The vial typically has a standard 9mm outer diameter, making it compatible with a wide range of autosampler systems commonly used in laboratories.

The slit allows ambient gas to equalize the gas in the vial so that a vacuum is not created in the vial from the tight seal around the needle.
If coring or clogging from a narrow needle or needle deflection from highly durable septa material is a concern, then choosing a pre-slit septum is a better choice.
A PTFE/Silicone with a slitted septum allows for easier needle penetration as well as to release of the vacuum that forms when a large volume of sample is withdrawn from a vial.

2ml Amber HPLC vials are manufactured from Type 1 borosilicate glass, available in clear or amber, or from Polypropylene. Excellent for long-term storage. Deactivation and MS Certification are also available.
Size: 12*32mm
Application: For Autosampler
OEM: Available
Certificate: ISO9001:2021
MOQ: 1Packs

Customization:
Customized logo(Min. Order: 300 Packs)
Customized packaging(Min. Order: 400 Packs)
Usage: Laboratory Analysis
Logo: Customized Accepted
OEM: Available
Sample: Provided Freely
Packing: 100pcs/pk
Material: Borosilicate Glass

Usage: Laboratory Analysis
Logo: Customized Accepted
OEM: Available
Sample: Provided Freely
Packing: 100pcs/pk
Material: Borosilicate Glass

Vial Dimension: 12x32mm
Vial Color: Amber and Clear
Vial Volume: 1.5-2.0ml
Vial Material: Borosilicate Glass/Glass Type 1
Application: Lab consumables for analysis
Certification: ISO9001, SGS, COA

Original Place: Zhejiang, China
Brand: Aijiren
Size: 11.6*32mm（with Write-on Spot）
Customization:
Customized logo(Min. Order: 300 Packs)
Customized packaging(Min. Order: 400 Packs)
Usage: Laboratory Analysis
Logo: Customized Accepted

The 9mm HPLC Autosampler Vial is the most widely used. Support OEM customization, customized logo, customized packaging

Micro Insert is used to ensure the most accurate and reliable analysis of your lab samples. Micro-inserts are manufactured of clear glass. Micro inserts, when used in conjunction with autosampler vials, allow for maximum sample recovery and easier sample removal because the conical shape decreases the surface area inside the vial.
Micro inserts can be used with screw tops, crimp tops, or snap-top vials. All conical styles of inserts are offered with the traditional pulled point as well as the improved mandrel point. Pulled point inserts are more economical, but mandrel point inserts provide a more pointed and uniform tip that enables better sample recovery. Micro-inserts can be used on all 1.5ml vials. Effectively relieves the pressure of the syringe. PolySpring inserts are self-aligning.

Polypropylene as a vial material is a good choice for protein analysis because normal borosilicate glass vials are known to absorb some types of analytes such as proteins, peptides, and amines.
Insert Volume: 0.3ml
Vial Thread: Screw
Vial Dimension: 12x32mm
Vial Color: Amber and Clear
Usage: Laboratory Analysis
Packing: 100pcs/pk

Vial Size: 12 x 32 mm
Pore Size: 0.22um and 0.45um
Capacity:
Unfiltered sample chamber: 500 µL
Filtered sample chamber: 330 µL

The short thread ND9 Vials are primarily utilized to inject samples from an autosampler. They are sold in several sizes, although 2 mL vials are more generally used.
Vial Material: Borosilicate Glass/Glass Type 1
Application: Lab consumables for analysis
Certification: ISO9001, SGS, COA
OEM: Available
Sample: Provided Freely
Packing: 100pcs/pk

No 2ml 9mm HPLC Vial is placed in inventory without passing cleanliness and performance testing for consistency resulting in a certified, 100% defect-free vial you can trust.
Vial Dimension: 12x32mm
Vial Color: Amber and Clear
Vial Volume: 1.5-2.0ml
Customization:
Customized logo(Min. Order: 300 Packs)
Customized packaging(Min. Order: 400 Packs)

Vial Volume: 1.5-2.0ml
Vial Material: Borosilicate Glass/Glass Type 1
Application: Lab consumables for analysis
Certification: ISO9001, SGS, COA
Vial Thread: Screw
Cap: Plastic open/solid cap
Septa: Non-slit, Pre-Slit, PTFE/Silicone

PTFE/Silicone septa are most popular for HPLC applications, and Pre-slit septa are easier to pierce with needles.
Usually, the cap color is clear or blue, other special colors can be also produced accordingly.

Vial Dimension: 12x32mm
Vial Color: Amber and Clear
Vial Volume: 1.5-2.0ml
Vial Material: Borosilicate Glass/Glass Type 1
Application: Lab consumables for analysis
Certification: ISO9001, SGS, COA

Vial Thread: Screw
Cap: Plastic open/solid cap
Septa: Non-slit, Pre-Slit, PTFE/Silicone
Characteristic: Consistency at quantification levels
Highly reproducible for samples >120µL
Long-term sample stability for most analytes
High solvent compatibility for mainstream HPLC and GC applications
Compatible with standard HPLC and GC autosamplers

This type of glass has a borosilicate structure. It is ideal for containing all injectable preparations with acid, neutral and alkaline pH. It also has good resistance to thermal shocks and can be sterilized before or after filling.
Vial Material: Borosilicate Glass/Glass Type 1
Application: Lab consumables for analysis
Certification: ISO9001, SGS, COA
Vial Thread: Screw
Cap: Plastic open/solid cap

2ml autosampler vials 9mm for HPLC system with bonded septa caps. Including: 100pcs Clear/amber bottles 32×11.6mm made of borosilicate glass, 2ml lab vials 9-425 screw thread, Flat base Sample Vials; Made out of USP TYPE I Glass. With writing patch for pencil mark.

Original Place: Zhejiang, China
Brand: Aijiren
Size: 11.6*32mm（with Write-on Spot）
Volume: 2ml Vial Diameter(mm):11.6±0.25
OEM: Available
Sample: Provided Freely
Packing: 100pcs/pk

Aijiren offers proven autosampler vials and consumables for the chromatographer. The standard opening 2ml clear hplc vials have more threads per inch, so there is less likelihood that volatile solvents will evaporate over time.
Size:12*32mm
Classification: Laboratory Bottle
Application: For Autosampler
Material: Borosilicate Glass
Place of Origin: Zhejiang, China

9 mm Wide Mouth Vials and Closures are our recommended screw thread vials. These vials are autosampler compatible and offer a 40% larger opening than 8-425 thread vials, simplifying pipetting and other routine functions. Amber glass vials are perfect for storing samples that are sensitive to light exposure. Clear glass vials are great for testing the solubility or dispersability of materials, allowing you an unhindered view of the solution.

9mm standard 2ml transparent threaded sample bottle (2ml automatic sample bottle), Φ11.6*32mm, bottle mouth diameter 9mm, red PTFE/white silicone bottle gasket, blue perforated polypropylene (PP) bottle cap, sample The bottles are transparent, brown, and can be marked with graduations. They are suitable for various types of autosamplers such as Agilent, Waters, Varian and Shimadzu.

Minimum filtering sample volume: 220 µL placed into the chamber to obtain a 50 µL filtered sample
Pore Size: 0.22um and 0.45um
Capacity:
Unfiltered sample chamber: 500 µL
Filtered sample chamber: 330 µL

9mm Screw conical micro-vial for laboratory chromatography experiment, the micro-vial size is 11.6x32mm. High-quality glass vial for HPLC/GC analysis. 2ml clear glass vial with 0.3ml integrated vial, designed for valuable samples to save for testing use volume. Bottom fixed micro insert to keep the vial central vertical. Vials with integrated Micro-Insert are also available now in clear and amber glass. amber glass make it compatible with sun-proof samples. Their glass Micro-Insert is absolutely centered in the plastic mold and pressed firmly against the septa due to its slightly exceeding edges. Standard vials for GC and HPLC.

Materials of construction: pp chamber, PP plunger outer housing, borosilicate glass plunger inner storage vial, silicone septa with PTFE liner, PP cap
Vial Size: 12 x 32 mm
Pore Size: 0.22um and 0.45um
Capacity:
Unfiltered sample chamber: 500 µL
Filtered sample chamber: 330 µL

polypropylene screw micro vials can be used in most standard gas and liquid chromatography autosamplers. These lightweight, economical vials are made from durable polypropylene which has good chemical resistance. The conical interior ensures maximum retrieval of contents without the hassle of using removable inserts. Vials are available with a screw cap and traditional screw cap finish.

9mm Short Thread Vial with integrated 0.3ml Micro-Insert, 32 x 11.6mm, Amber or clear glass, 1st hydrolytic class, label and filling lines, 100/pk
Aijiren 9mm glass vial with fused insert together eliminates movement of the insert. The fused insert also eliminates concerns about contaminants around the fused seam/space between the neck of the vial and the insert. Vials without graduation, all micro inserts are clear glass. Vials with integrated Micro-Insert are also available now in clear and amber glass. amber glass makes it compatible with sun-proof samples.

Autosampler needle pierces through the cap during injection and withdraws the required aliquots of sample from the 2ml HPLC and GC Autosampler Vials.
Original Place: Zhejiang, China
Brand: Aijiren
Size: 11.6*32mm（with Write-on Spot）
Volume: 2ml Vial Diameter(mm):11.6±0.25
Performance: Acid Resistance, Alkali Resistance, Temperature Resistance

Aijiren 9MM hplc vials offer the lowest ion content possible to reduce sample loss and contamination.
OEM: Available
Sample: Provided Freely
Packing: 100pcs/pk
Material: Borosilicate Glass

Aijiren 9mm vials may be used with robotic autosamplers in place of crimp style vials. 9mm Vials have a 40% larger opening for easier sample preparation, Aijiren 9mm vials must be used with 9mm screw pp closures to ensure proper fit and functionality.

As such there may be multiple types of vials being used simultaneously in a single laboratory without much consideration as to which is best suited for analytical method development and validation.
Customization:
Customized logo(Min. Order: 300 Packs)
Customized packaging(Min. Order: 400 Packs)
Usage: Laboratory Analysis
Logo: Customized Accepted
OEM: Available

The 9mm Short Thread Caps that are included with this kit are knurled on the sides for excellent gripping and comfort when applying to the vial. Caps for screw thread vials are available with either an open hole for autosampler use and standard addition or with a solid top for sample storage.Screw Cap Vials are universal. Screwing the cap applies a mechanical force that squeezes the septum between the glass rim and the cap.

Materials of construction: pp chamber, PP plunger outer housing, borosilicate glass plunger inner storage vial, silicone septa with PTFE liner, PP cap
Vial Size: 12 x 32 mm
Pore Size: 0.22um and 0.45um
Capacity:
Unfiltered sample chamber: 500 µL
Filtered sample chamber: 330 µL
Maximum operating temperature: 122°F (50°C)
Minimum filtering sample volume: 220 µL placed into the chamber to obtain a 50 µL filtered sample

9mm screw thread vials are designed especially for use with Agilent’s and other rotating or robotic arm samplers 2ml, 12X32mm vials are manufactured of borosilicate glass and include a write-in patch for sample identification.

These 2ml clear chromatography vials include 100/PK of 2ml RSA-Pro™ surface-treated glass vials with 9mm screw threads. Any requirement about 2ml clear chromatography vials,please contact AIJIREN.
Volume: 2ml
Usage: Laboratory Analysis
Brand Name: AIJIREN
Printing with Company Logo: Accept

All materials are produced at 100,000 grade clean room. Passed ISO9001:2015 quality management system certification, RoHS compliance can also be provided.

Micro inserts Packing: Economy Package and General Package for choose. Neutral carton outside, pallet is available to protect quality better.
OEM packing is also available.

Aijiren autosampler vials are suitable for HPLC, LC/MS, GC, and GC/MS instruments and applications.

Autosampler vials for HPLC are generally grouped depending on the diameter of the vial, the height of the vial, and, the thread finish. Both clear glass and amber glass are highly inert.
Sample: Provided Freely
Packing: 100pcs/pk
Material: Borosilicate Glass
Vial Height(mm): 32±0.3
Mouth Diameter(mm):6.15±0.15

2ml amber autosampler vial, 12mm Diameter, 32mm Height, 9-425 screw top. Our vials with caps are widely used in standard HPLC and GC applications. The vials can be used on all common autosamplers due to their technical geometry, preferentially they are found on Agilent, HTA, Shimadzu, Thermo, Varian, Waters, etc.

Aijiren clear glass vial inserts, polypropylene vial inserts, and high recovery vials ensure you extract the maximum possible amount of your precious sample.
Material: Borosilicate Glass
Working Volume (mL): 0.3mL
Working Volume (μL): 300 μL
Bottom: Flat
Insert: Conical, base bonded, integrated insert

Usage: Laboratory Analysis
Logo: Customized Accepted
Trademark: Aijiren
Origin: China
OEM: Available
Sample: Provided Freely

Item: Micro Insert Suit for 9mm HPLC Vials
Volume: 0.25ml
Color: Transparent
OEM: Available
Sample: Free
Certification: ISO9001:2015
Place of Origin: China (Mainland)
Compatibility: 9mm HPLC Vials
Polyspring inserts are self-aligning and provide a cushion against needle contact
Conical inserts with polymer feet are self-centering and have a cushion against needle penetration

Graduated write-on marking spot area for easy filling and identification of sample, measures 0.5, 1.0 and 1.5ml. Amber glass vials are perfect for storing samples that are sensitive to light exposure. Clear glass vials are great for testing the solubility or dispersibility of materials, allowing you an unhindered view of the solution. These 9mm 2ml Short Tread Glass HPLC Vials are typically made from high-quality Borosilicate Glass or 1st hydrolytic-class glass. The choice of material is essential to prevent any chemical interactions between the sample and the vial, ensuring data accuracy.

China High Quality 9mm Short Thread Caps with Septa for 10-425 thread vial Manufacturer

9mm 2ml Short Tread Glass HPLC Autosampler Vials have two different materials, one is borosilicate glass, and the other is imported first-grade hydrolytic glass, which can meet the different needs of customers; The 2mL Amber Screw Top Autosampler Vials are made from high-quality amber glass, providing excellent protection against light and UV radiation. The amber color helps to preserve the integrity of light-sensitive samples during storage or analysis. Amber glass vials are perfect for storing samples that are sensitive to light exposure. Clear glass vials are great for testing the solubility or dispersibility of materials, allowing you an unhindered view of the solution.

Item: Micro Insert for 9mm Autosampler Vial
Volume: 0.15-0.3ml
Color: Transparent
OEM: Available
Sample: Free
Certification: ISO9001:2015
Packing: 100pcs/pk
Brand Name: Aijiren
Place of Origin: China (Mainland)
Compatibility: 9mm HPLC Vials

Vial Dimension: 12x32mm
Vial Color: Amber and Clear
Vial Volume: 1.5-2.0ml
Vial Material: Borosilicate Glass/Glass Type 1
Sample: Free
Payment: 100% T/T in advance
Certificate: ISO9001:2015

9mm threaded vials are designed for use with Agilent and other rotary or robotic arm samplers. Sample vials are made of high-quality borosilicate glass or first-grade hydrolyzed glass. The cap is made of high-quality polypropylene. Our septa use only the highest quality materials to ensure proper function and can be pre-cut for easier needle insertion. Available in amber and clear colors, amber glass vials are ideal for storing light-sensitive samples. Clear glass vials are ideal for testing the solubility or dispersion of materials, allowing you to view the solution unobstructed.

These 2ml Screw Top Plastic Autosampler Vials are made to consistent quality standards and are an excellent choice for ion Chromatography, CE, Bio-analysis, or General Chromatography when organic solvents are not needed. Minimized ionic interactions and adsorption with vial walls provide consistent results for proteins and peptides. 2ml screw top plastic autosampler vials are made of high-quality GC-tested polypropylene material. Polypropylene vials are chemically inert and suitable for most chromatography experiments, the material of choice for pH-sensitive samples, and sodium or heavy metal analyses. Plastic bottles may be used over traditional glass bottles when the content of inorganic ions must be kept to an absolute minimum.