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Addressing Sample Contamination with Low-Leachability Vial Septa Surfaces

Septa Selection Guide – Aijiren Tech Scientific and are intended for single injection use with aqueous based sample mixtures. Polypropylene septa offer better solvent compatibility compared ...
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Septa Selection Guide - Aijiren Tech Scientific

and are intended for single injection use with aqueous based sample mixtures. Polypropylene septa offer better solvent compatibility compared to polyethylene, but piercing force is slightly higher. Viton (V1) septa Viton septa are used in situations where a resealable septum is required for a sample matrix that aggressively attacks all other

Comparative Leachable Study of Glass Vials to - PubMed

In this study, the leachable behaviors of vials made of borosilicate and aluminosilicate glass were evaluated by using medium and low fill volumes with storage for 24 weeks at 40°C. The standard conversion process to manufacture a vial from glass tubing introduces volatile "glass" elements into the vial wall near the bottom area.

Florida Department of Environmental Protection

There are three sets of SCTLs based on Leachability (columns 3 through 5), which are derived (back calculated) from the groundwater cleanup target levels (GCTLs) and surface water cleanup target levels (SWCTLs) referenced in Table I of Chapter 62-777, F.A.C. The headings for the three Leachability columns state that the SCTL

1.5ml autosampler vial septa with caps Aijiren Tech

Autosampler vials-Aijiren Vials for HPLC/GC. 1.5 ml vials from Aijiren Technology, Inc with high quality and favorable price. Zhejiang Aijiren is a manufacturer of Laboratory consumables. We supply autosampler vials, septa and caps at factory price. 9mm Short Thread Vials ND9 can be used for GC and HPLC. Get Price >>.

Septa Selection Tool | Aijiren Tech Scientific - US

A specially moulded seal with a PTFE insert. Sealing surface of Butyl and PTFE affects a more positive seal than non-PTFE-faced septa. Ideal choice for temperatures below 125°C. Good sealing characteristics, excellent resistance to most solvents with reduced coring and high puncture tolerance.

Accessory Product Data Sheet - .NET Framework

all caps and vials. Reusing caps and vials opens up the possibility of contamination, from solvent (liquid or vapor) interacting with the septa material as well as the atmosphere. This may seriously impact your analytical results, causes by sample contamination, chemical reaction, or evaporation.

Simplifying GC Syringes and Sample Introduction - Aijiren

Contaminated wash vial bottom Contaminated wash solvent Frequently clean or replace wash vials • Traces of previous samples will accumulate over time • Do not refill or “top-off” the vial, instead empty, rinse, and replace solvent • Use a cotton swab to remove particulates from the glass surface DE.4721759259

Rule Options for Demonstrating Leachability

The potential leachability of soil contamination must be addressed as part of any site closure under Chapter 62-780 F.A.C. Although the potential for leachability is often addressed through analysis of soil samples, the purpose of a leachability evaluation is to ensure that the contaminants in soil are not leaching into groundwater or surface water at levels that exceed the applicable cleanup

An Aijiren Septum is Not Just a Septum

The septum forms a barrier between your sample analyte in the vial and the outside atmosphere. This barrier protects your sample from external contamination while allowing a needle (from a manual or automatic syringe) to enter the vial, and extract the sample for the next stage of separation. Choosing the correct septum material is vital, as it

COPY - U.S. Environmental Protection Agency

Surface water samples for VOC analysis must be collected in 40 ml glass vials with Teflon® septa. The vial may be either preserved with concentrated hydrochloric acid or they may be unpreserved. Preserved samples have a twoweek holding time, whereas,- unpreserved samples have only a seven-day holding time. In the great majority of cases,

Understanding Leachate Analysis - AWE Magazine

Methods. Essentially there are four key stages in preparing and analysing a leachate: • Sample preparation – which may comprise proprietary analysis of the sample, particle size reduction, etc. • Sample leaching – the leaching matrix used, the mode of contact with the solid material, agitation method, etc. • Preparation of the

EPA FACT SHEET: A Guide to Principal Threat and Low Level

low to moderate toxicity-Surface soil containing contaminants of concern that generally are relatively immobile in air or ground water (i.e., non-liquid, low volatility, low leachability contaminants such as high molecular weight compounds) in the specific environmental setting. • Low toxicity soorce material -soil and subsurface

Addressing Sample Interference with High-Quality Vial Septa

Vials are tested for high recovery of analytes at 1 ng/mL concentration, using UPLC®/MS/MS (MRM). TruView Vials exhibit the lowest surface adsorption of any LC autosampler vial on the market. 96-Well Plate, 700 µL per well is made from a clean grade of polypropylene.

Sample Vial Septum Contamination - Chromatography Forum

Oct 1, 2015 · You would most likely have contamination of the sample with siloxanes from the silicone septa. The teflon is used as a liner on the inside to keep the solvent from extracting the siloxanes from the rubber, once it is pierced you lose that barrier.

Evaluation of external contamination on the vial surfaces of

The contamination detected on fluorouracil vials was the highest with an average amount up to 904.33 ng/vial, followed by cyclophosphamide (43.51 ng/vial), and gemcitabine (unprotected vials of 5.92 ng/vial, protected vials of 0.66 ng/vial); (2) overall, the environmental contamination induced by WEINAS robotic compounding was significantly

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Zhejiang Aijiren Technology, Inc. is a global supplier of life-science, chemistry, laboratory consumables, etc. Our major products are high performance liquid chromatography & gas chromatography consumables such as Chromatography Autosampler Vials with closures, inserts, crimper and syringe filters, etc; Water analysis consumables such as COD test tube.
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