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Selexion tuning kit

Manufactured by AB Sciex
Sourced in Germany

The SelexION tuning kit is a specialized tool designed for the adjustment and optimization of the SelexION device, which is a differential ion mobility spectrometry (DIMS) system. The kit provides the necessary components and instructions to ensure the proper calibration and tuning of the SelexION system, enabling accurate and reliable performance for analytical applications.

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7 protocols using selexion tuning kit

1

Targeted Lipid Profiling from Plasma

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25 µl of plasma was pipetted into a glass tube for extraction. A modified Bligh and Dyer extraction (Bligh, 1959) is carried out on samples. Prior to biphasic extraction, a 13-lipid subclass Lipidyzer Internal Standard Mix is added to each sample (AB Sciex, 5040156). Following two successive extractions, pooled organic layers are dried down in a Genevac EZ-2 Elite. Lipid samples are resuspended in 1:1 methanol/dichloromethane with 10 mM Ammonium Acetate and transferred to robovials (Thermo 10800107) for analysis. Samples are analyzed on the Sciex Lipidyzer Platform for targeted quantitative measurement of 1100 lipid species across 13 subclasses. Differential Mobility Device on Lipidyzer was tuned with SelexION tuning kit (Sciex 5040141). Instrument settings, tuning settings, and MRM list available upon request. Data analysis performed on Lipidyzer software. Quantitative values were normalized to volume. Samples were analyzed on the Sciex Lipidyzer Platform for targeted quantitative measurement of lipids.
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2

Targeted Lipidomic Analysis of Plasma

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Lipids from 25 ul of plasma were extracted using a modified Bligh and Dyer extraction method by the UCLA lipidomics core facility56 . Prior to biphasic extraction, a 13-lipid class Lipidyzer Internal Standard Mix is added to each sample (AB Sciex, 5040156). Following two successive extractions, pooled organic layers were dried down in a Genevac EZ-2 Elite evaporator. Lipid samples were resuspended in 1:1 methanol/dichloromethane with 10mM ammonium acetate and transferred to robovials (Thermo 10800107) for analysis. Samples were analyzed on the Sciex Lipidyzer Platform for targeted quantitative measurement of 1100 lipid species across 13 classes. Differential Mobility Device on Lipidyzer was tuned with SelexION tuning kit (Sciex 5040141). Instrument settings, tuning settings, and MRM list are available upon request.
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3

Quantitative Lipid Profiling of Liver

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A total of 50–100 mg of frozen liver are homogenized in the Omni Bead Ruptor Elite with 2 mL homogenizer tube system (Omni, 19-628D). Samples are homogenized in cold phosphate-buffered saline (PBS) for 3 cycles of 10 s each at 5 m/s with a 10 s dwell time between cycles. A total of 3–6 mg of homogenized material are applied to a modified Bligh and Dyer extraction26 (link). Prior to biphasic extraction, a 13 lipid class Lipidyzer Internal Standard Mix is added to each sample (AB Sciex, 5040156). Following two successive extractions, pooled organic layers are dried down in a Genevac EZ-2 Elite. Lipid samples are resuspended in 1:1 methanol/dichloromethane with 10 mM ammonium acetate and transferred to robovials (Thermo 10800107) for analysis.
Samples are analyzed on the Sciex Lipidyzer Platform for targeted quantitative measurement of 1100 lipid species across 13 lipid sub-classes. Differential Mobility Device on Lipidyzer is tuned with SelexION tuning kit (Sciex 5040141). Instrument settings, tuning settings, and MRM list available upon request. Data analysis performed on Lipidyzer software. Quantitative values are normalized to milligrams of material used.
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4

Targeted Lipidomic Analysis of Plasma

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Lipids from 25 ul of plasma were extracted using a modified Bligh and Dyer extraction method by the UCLA lipidomics core facility56 . Prior to biphasic extraction, a 13-lipid class Lipidyzer Internal Standard Mix is added to each sample (AB Sciex, 5040156). Following two successive extractions, pooled organic layers were dried down in a Genevac EZ-2 Elite evaporator. Lipid samples were resuspended in 1:1 methanol/dichloromethane with 10mM ammonium acetate and transferred to robovials (Thermo 10800107) for analysis. Samples were analyzed on the Sciex Lipidyzer Platform for targeted quantitative measurement of 1100 lipid species across 13 classes. Differential Mobility Device on Lipidyzer was tuned with SelexION tuning kit (Sciex 5040141). Instrument settings, tuning settings, and MRM list are available upon request.
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5

Targeted Quantitative Lipidome Analysis

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50-100 mg of tissue were collected in tube pre-loaded with 2.8mm ceramic beads (Omni #19-628). Tissue is homogenized with PBS in the Omni Bead Ruptor Elite (3 cycles of 10 seconds at 5 m/s with a 10 second dwell time), and 3-6mg of homogenate were used for extraction (Bligh and Dyer extraction (Bligh, 1959)). Prior to biphasic extraction, a 13-lipid class Lipidyzer Internal Standard Mix is added to each sample (AB Sciex, 5040156). Following two successive extractions, pooled organic layers were dried in a Genevac EZ-2 Elite. Lipid samples were resuspended in 1:1 methanol/dichloromethane with 10mM Ammonium Acetate and transferred to robovials (Thermo 10800107) for analysis. Samples were analyzed on the Sciex Lipidyzer Platform for targeted quantitative measurement of 1100 lipid species across 13 classes. Differential Mobility Device on Lipidyzer is tuned with SelexION tuning kit (Sciex 5040141). Data analysis performed on Lipidyzer software and quantitative values were normalized to mg amounts used.
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6

Quantitative Lipidomic Analysis of Human Plasma

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Methanol, 2-propanol, dichloromethane, water, and ammonium acetate were purchased from VWR International, LLC (Radnor, Radnor, PA, USA). All of these products were of HPLC grade. Internal standard (ISTD) kits (containing ISTDs for 13 lipid classes), pike standards with quality control plasma kits, SelexION tuning kits, and system suitability test kits for quantitative lipidomic analysis of human samples were purchased from AB Sciex Germany GmbH (Darmstadt, Germany). The composition of ISTD standard mixtures containing isotope-labeled lipid molecules was previously described in detail [64 (link),65 (link)]. Lipids were extracted from the plasma samples using a modified Bligh-Dyer method [66 (link)].
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7

Quantitative Lipidomics Analysis Protocol

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Methanol, 2-propanol, dichloromethane, water, ammonium-acetate were purchased from VWR International, LLC (Radnor, Radnor, PA, USA). All of them were of HPLC grade. Internal standard (ISTD) kits for quantitative lipidomic analysis of human samples were bought from AB Sciex Germany GmbH (Darmstadt, Germany). The kits contain ISTDs for 13 lipid classes including ceramides (Cers), cholesterolesters (CEs), DGs, acylceradmides (ACer), fatty acids (FAs), hexosylceramides (HexCers), lactosylceramides (LacCers), LPCs, LPEs, PCs, phosphatidylethanolamines (PEs), SMs, and TGs. The composition of ISTD standard mixtures containing isotope-labelled lipid molecules were described in detail previously [18 (link)]. Spike standards with quality control plasma kits, SelexION tuning kits, and system suitability test kits were also obtained from AB Sciex Germany GmbH.
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