Before breath sample collection, all participants were asked to strictly fast for 8 hours to minimize the influence of their diet and the environment on the composition of their exhaled breaths. Alveolar breath sampling was performed as described previously for other studies.31 , 32 A gas‐tight syringe (50 mL; Agilent Inc) was used to draw and transfer the exhaled gas (20 mL) into an evacuated 20‐mL glass vial (Supelco Inc) for each participant. All vials were flushed and cleaned with nitrogen gas (Liming Gas Inc) thoroughly to remove any residual contaminants.33 All of the samples were analyzed within 3 hours of sampling. The gastric cancer sample data in this experiment were all collected and interpreted under the same conditions.
20 ml glass vial
Manufactured by Merck Group
Sourced in United States
The 20-mL glass vial is a laboratory container used to hold and store various liquids, powders, or other materials. It has a capacity of 20 milliliters and is made of glass, providing a durable and transparent container. The vial can be used for a variety of applications in research, testing, and storage within a laboratory setting.
Automatically generated - may contain errors
Lab products found in correlation
Glass coverslips, by Merck Group (2 mentions)
L alanine, by Merck Group (2 mentions)
Gold nanoparticle solution, by Merck Group (2 mentions)
Stir bars, by Merck Group (2 mentions)
Poly methyl methacrylate pmma discs, by McMaster-Carr (2 mentions)
Uric acid, by Merck Group (2 mentions)
Direct q3 uv apparatus, by Merck Group (2 mentions)
Gas tight syringe, by Agilent Technologies (1 mentions)
Spme gc ms, by Merck Group (1 mentions)
4 protocols using 20 ml glass vial
1
Standardized Alveolar Breath Sampling
2
Headspace Analysis of Microbial Culture
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Two milliliters of the culture supernatant were aspirated from the apparatus with a sterile syringe and immediately transferred to a vacuum-evaporated 20 mL glass vial (Supelco Inc., USA), upon which SPME-GC-MS was used to analyze the headspace. Before the medium was collected, all vials were thoroughly cleaned by flushing with nitrogen gas (purity of 99.9999%) to remove any residual contaminants, and the vials were then evacuated.
3
Rapid Microwave-Assisted Biosensing Assay
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l -Alanine, uric acid, gold nanoparticle solution (diameter = 20 nm, optical density = 1), glass coverslips, 20 mL glass vials, stir bars and thermometers were purchased from Sigma-Aldrich (St. Louis, MO, USA). Deionized water was obtained from Millipore Direct Q3 UV apparatus (Billerica, MA, USA). Adhesive silicone isolators with 21-well capacity (depth = 2.0 mm, diameter = 4.5 mm with a capacity of 30 µL, and diameter = 3.5 mm with a capacity of 10 µL) were designed by the Aslan Research Group and manufactured by Grace BioLabs (Bend, OR, USA). Poly(methyl)methacrylate (PMMA) discs (5 cm diameter) were purchased from McMaster-Carr (Chicago, IL, USA). The iCrystal plates were created by combining the PMMA discs and the adhesive silicone isolators. Adhesive silicon isolator was carefully attached to the PMMA platform and gently pressed to ensure water-tight attachment. The 8 GHz medical microwave (maximum wattage 20 W) was obtained from Emblation Microwave (Inglewood, Alloa, Scotland, UK).
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4
Measuring Uric Acid with Gold Nanoparticles
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