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Headspace Vials & Caps

1 Are catalog numbers 95020-45S-T and 95010-0CV comaptible with SPME?

The following two items are compatible with solid phase microextraction (SPME): catalog # 95020-45S-T: Magnetic Screw Cap for HeadSpace. Silver, 8mm Center Hole, Silicone Transparent Blue/PTFE White,…

2 Are the Basik™ brand of headspace vials free of endotoxins?

These vials are not tested for the presence of endotoxins but since they are made at 600°C, bacteria or organic matter will not likely exist after manufacturing. However, while the vials are packed directly…

3 Are your headspace autosampler vials radiation resistant?

Although not engineered specifically for radiation applications, the borosilicate autosampler glass vials should easily withstand typical laboratory sterility radiation exposure in short duration applications…

4 Can I use vial 95025-VN-05C with crimp cap 95025-08-1S in an oven at 105°C for approximately 1 month?

Yes, the product should be acceptable at this temperature and time period. © Copyright MicroSolv Technology Corporation, all rights reserved.

5 Headspace Septa Temperature Performance Specifications

The following table describes the lower and upper recommended limits for temperature conditions that our Headspace Cap Septa can be used in. This does not reflect the safety of the Headspace system (glass…

6 How do I know if a crimped vial has a good seal?

The best way to know if you have a good seal is to take the vial and tightly hold it in your left hand. With your right hand, try to spin the crimped cap on the vial. If it moves, you should remove the…

7 How skived vs. cast headspace septa can affect quantitation

In headspace analysis, it is of utmost importance that a tight seal is formed between the septum of the cap and the vial. If there are even small gaps present in the seal, some of the analyte will escape…

8 I heard that silicone rubber cannot be used at high temperature, is that true?

No, but at very high temperatures, silicone rubber can become hard, almost to the point of being brittle. However, most autosamplers, including Headspace, do not use temperatures high enough to cause…

9 In order to prevent gas venting from a closed autosampler vial, should I use snap, crimp, or screw cap

The crimp cap provides the best quality seal for the longest duration but only if the crimping tool that is used to create the seal is calibrated properly. To maintain adequate calibration, you should…

10 What is the advantage of using a “Pharmafix” type of septa?

The advantage is that you get a better seal with the “Pharmafix” seal. However, you should be aware that it may not be as inert as a silicone/PTFE septa designed for Headspace is. Click here for more…

11 What is the difference between 45 Shore A and 55 Shore A caps?

"Shore" is a measure of the hardness of a material, named after Albert F. Shore. The letter designates the "scale," which specifies what type of substance is described. In this case, A refers to flexible…

12 What is the pressure rating of MicroSolv headspace vials and caps?

Headspace vials are designed to withstand high internal pressure, therefore all MicroSolv brand headspace vials have a wall thickness of 1.2mm for added safety, thus it is assured that the vial will not…

13 What is the purpose of foil as part of a septa in headspace analysis?

The purpose of the foil is general to be a barrier film. To keep any solvents or gases from affecting the septa in the crimp cap. Click here for more information about Headspace Vials and Caps © Copyright…

14 Which crimp cap is most commonly used for residual solvent testing by the pharmaceutical industry?

The crimp cap with silicone/PTFE septa is most used by the pharmaceutical industry to be in compliance with USP <467>. Our catalog number 95025-09-1S is one of many caps used. Click here for more…

15 Which crimp caps and septa are suitable for use with Solid Phase MicroExtraction (SPME) vials?

Solid Phase MicroExtraction (SPME) is a technique in which a short fiber coated with a sorbent or polymer quantitatively extracts analytes from a sample matrix. The fiber is then sent to the injector…

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