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Hace 3 días · Comprehensive Guide to Headspace vials:Features, Selection, Price, and Usage Comprehensive Guide to Reagent Bottle Encyclopedia of HPLC vials All About Vial Crimpers: A Detailed 13mm & 20mm Guide Comprehensive Guide to Syringe Filters: Features, Selection, Price, and Usage HPLC Vial Inserts: Enhancing Precision and Sample Integrity Premium PTFE and Silicone Septa: Reliable Sealing Solutions ...
Hace 3 días · Using clean air filter cartridges (ICAF 2X6, Sigma Scientific, Micanopy, USA), the stream of ambient air was purified and pumped, controlled by the HSCD, through each bottle until it reached the final volume of 30 L. Volatile organic compounds from headspace sampling were trapped on stainless steel, prepacked sample tubes with Tenax TA35/60 sorbent (Markes, Neu-Isenburg, Germany).
Hace 4 días · The gas content in the headspace of the serum bottle from enCOH experiments was analyzed using a 7890B GC-TCD system (Agilent Technologies). A 0.5-ml gas sample was obtained using a gas-tight ...
Hace 4 días · Briefly, 2.0 g of pumpkin seeds were placed in a 20 mL headspace bottle, sealed, and preheated at 60 °C for 15 min. The acquisition time lasted for 80 s, ... The fiber was introduced into the headspace vial of the sample (positioned at a depth of 2 cm from the sample), subjected to extraction at 50 °C for 40 min, ...
Hace 1 día · All co-cultures were grown anaerobically and non-shaking at 37°C in 250 mL serum bottles including 100 mL N 2-flushed bicarbonate buffered medium as ... cultures headspace on a CompactGC 4.0 (Interscience, Breda, The Netherlands) equipped with a 3 m × 0.32 mm Carboxen 1010 pre-column (Sigma Aldrich, Germany), a 30 ...
Hace 3 días · In the case of aminolysis, leaving more headspace in waste bottles would not resolve the problem, because a reaction would still occur, increasing temperatures and vapor pressure inside the bottle. A venting cap might be an appropriate alternative.
Hace 2 días · Sample in headspace vial: The weighed 0.5 g of the cinnamon sample was transferred into a headspace vial, trying to distribute the sample as evenly as possible at the bottom of the vial. Warming treatment: The headspace bottle was placed in a thermostatic water bath and the samples were allowed to warm at 80 °C for 15 min to promote the release of volatile components from the cinnamon.
