RE: WD-40 for cleaning engine? So WD-40 is great for what it is made for -- removing water -- but as a side effect it also removes other types of lubrication, which should not be removed in the process.D 40 (Water Displacement 40th try) removes the water to aid in rust prevention, (rust is also a horrible lubricant) then lube stuff.
PUBS is a rare phenomenon wherein the urine. catheter collecting bag and the tubing as well as the. urine of a patient is noted to turn purple hours to days. after urinary catheterization.3 It was first reported in. 1978 by Barlow and Dickson4 and was seen in patients. with urinary diversions.
Bacteria that stain a dark purple are known as Gram positive bacteria. They appear purple because they have a thick layer of peptidoglycan outside their cell membranes and it absorbs the violet dye. On the other hand, Gram negative bacteria will appear a bright pink or red because they have only a thin peptidoglycan layer sandwiched between two lipid layers. These lipid layers, unlike the peptidoglycan, stain a pink color and mask the thinner, purple-stained peptidoglycan layer in between.