5 Vital Factors Help You to Choose the Right Chromatography Vial

Chromatography vials are typically used as temporary sample containers for subsequent gas chromatography (GC) or liquid chromatography (LC) analysis. Consider these factors when choosing the correct vial for your applications.

1) Check your autosampler for compatibility

If you are using an autosampler, be sure to confirm compatibility with the manufacturer's requirements before referencing this guide.

There are hundreds of models of autosamplers available, each with its own purpose and specifications for use. Some use robotic arms to pick up the vial while others rotate the tray and align the sampling needle to the vial.

Standard Chromatography vial sizes include 8 x 40mm, 12 x 32mm, and 15 x 45mm. Robotic Arm Machines (R.A.M.) use a non-standard 9mm vial with a magnetic cap. For autosamplers, choose a vial designed for that specific brand.

Most autosamplers require a very specific vial size and closure type for proper usage.?If the wrong type of vial is used with your autosampler, this could result in mechanical damage.

2) Select the vial material

Vials are either made from glass or plastic.

Glass is a common choice for most labs since it is pure and more heat resistant than plastic. Type I Borosilicate glass tends to be a better option for higher-end laboratories testing PH-sensitive samples due to its highly resistant composition.

Plastic vials can be used to provide higher chemical resistance and lighter weight construction. Plastic vials can also be used for samples that are sensitive or stick to glass. As an added bonus, plastic vials tend to have higher durability and are usually more affordable.

However, not all plastic vials are created equal so be sure to check the type of plastic used. Polypropylene is by far the best option for plastic vials due to its good chemical resistance for short-term storage. They can also be incinerated while sealed limiting exposure to hazardous materials.

3) Consider your sample size

There are many different sizes available for vials depending on the type of vial chosen. You should determine the size of your sample upfront and confirm the working volume of the vial prior to purchase. The most common sizes for vials include 1ml, 2ml and 4ml.

4) Select the proper closure

Chromatography vials typically have crimp, snap, or screw finishes. Closures may be pre-assembled with septa or the septa purchased separately. Vials with closures are also sometimes sold in pre-assembled sets.

Crimp top finishes are used with aluminum crimp seals to create a more permanent closure. Choose a flat finish or use a beveled finish for a tighter seal.

A snap finish accommodates a cap that is more easily applied and removed. Some vials have a finish that can be used with either crimp-top or snap closures.

Both snap and screw closures are usually made from plastic (polyethylene, PP, or a phenolic resin). They are available in a range of colors and sizes. The size of screw thread closures is typically expressed as two numbers that represent the diameter and the standard thread finish. For example, a closure size of 28-430 indicates a diameter of 28mm and a 430 GPI thread finish

5)Working with light-sensitive samples?

Aijiren Tech amber chromatography vials are strongly recommended. Amber glass is formulated to absorb light in the ultraviolet region of the electromagnetic spectrum and therefore provides excellent protection for your valuable samples.

Your Additions are Welcome for More Factors to Choose ChromatographyVial.