streak line

streak line

[′strēk ‚līn]
(fluid mechanics)
A line within a fluid which, at a given instant, is formed by those fluid particles which at some previous instant have passed through a specified fixed point in the fluid; an example is the line of color in a flow into which a dye is continuously introduced through a small tube, all dyed fluid particles having passed the tube's end.
References in periodicals archive ?
The STREAK line includes hollow points and a wide range of calibers and will be available in both red and yellow/green colors.
Prior to 2015, the MHT, which is also known as the cloverleaf test, was the only phenotypic confirmatory test for carbapenemase production in Enterobacteriaceae described by the CLSI.3 The MHT is based on the inactivation of a carbapenem by a carbapenemase-producing strain so that a carbapenem-susceptible indicator strain is able to grow towards a carbapenem disk along the streak line of the test strain.5 The carbapenem-producing strain (or positive control organism) recommended by the CLSI has a KPC type carbapenemase.3
On the next day, the growth was scraped off and chloroform vapour was applied on the streak line for 20 to 30 minutes.
Make sure it's fully rubbed into the skin, otherwise you'll get the dreaded streak lines.