Are items 95020-45S-T caps and 95010-0CV vials compatible with SPME?

The following two items are compatible with Solid Phase Micro-Extraction (SPME): Catalog # 95020-45S-T: Magnetic Screw Cap for Headspace. Silver, 8mm Center Hole, Silicone Transparent Blue/PTFE White, 45 Shore A, 1.3mm Thick. Precision Threads. 100/PK. Catalog # 95010-0CV: Vials, head space, 10ml, 46 x 22.5mm, screw top, clear borosilicate glass, round bottom. CTC Compliant. Precision threads 100/PK. However, the […]

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Are MicroSolv’s 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 such as irradiating biologicals and similar without suffering structural damage. It is important to note that the glass may discolor or may become cloudy. Any MicroSolv vial should not be used […]

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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 after cooling, they are not certified to be “untouched by human hands”. More information about Headspace Vials

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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 vial, septa, cap and gas) used in practice.   Material Temperature Resistant Range (°C)  Silicone/PTFE Seals (completely PTFE Laminated)  -60 – 200  Butyl/PTFE […]

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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 through these gaps and lead to low recovery. In order to avoid problems of this kind, the quality of […]

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What is the Difference between 45 Shore A and 55 Shore A Septa?

“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 mold rubbers/plastics. The numbers go from 0 to 100, with 0 being the softest and 100 being the hardest. Hence, cap septa with […]

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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 burst.  Contrary to popular belief, the seal and not the vial represents the weakest part of the entire system. Under pressure the septa […]

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