The phrase "a plastic flask" is correct and usable in written English.
You can use it when referring to a container made of plastic that is typically used for holding liquids.
Example: "I always carry a plastic flask filled with water during my hikes to stay hydrated."
Alternatives: "a plastic bottle" or "a plastic container".
One took a plastic flask from an incubator and placed it under a microscope.
He led the way into his trashed living room and held up a plastic flask emblazoned with an image of the Virgin.
The sorted CD15 positive cells were collected and then were cultured in a plastic flask at a density of 5 × 10 viable cells/cm in a humidified incubator at 37°C with 95% air and 5% CO2.
All solutions were degassed by purging with N2 and with rigorous stirring for a minimum of 2−3 h (1 L of buffer in a plastic flask with minimum head space) before placing in an anaerobic cabinet (Belle Technology; ≤2 ppm O2) overnight at ca. 25 °C.
Considering that one egg yields 5 10 ml of allantoic fluid, the amount of FTM- protein produced in one egg is equivalent to that found in the supernatant of rVV-infected cells grown as monolayer in a plastic flask of 175 cells~108 cells).
Make sure that you don't put the drink in a plastic flask, but in a normal bottle, such as a 7UP bottle, or a Coca-Cola one.
The lyophilized extract was stored in a closed plastic flask and kept frozen.
Pellet was resuspended in expansion medium and cultured in a T175 plastic flask (Greiner Bio-one, Frickenhausen, Germany).
The isolated CD133+ cells were suspended in defined stem cell growth medium containing DMEM-F-12, N2 supplement (Gibco), penicillin G, streptomycin sulfate, recombinant human FGF-2 (20 ng/ml; R&D System) and recombinant human EGF (20 ng/ml; R&D Systems), and were plated at a density of 2 × 106 live cells per 75 cm2 on an uncoated plastic flask.
Three years and at least $200 million later an analyst's guess the number two tobacco giant is introducing a curved, crushproof plastic flask in limited national distribution this month.
The lyophilized extract was stored in a closed amber plastic flask and kept frozen.
