Designed for outswinging wood or metal screen or storm doors 1 to 1-1/4 thick. Complete with night lock. Contemporary design with tie-down screw at bottom of handle. 1-3/4 hole centers. Material: Zinc, Color: Black, Door Thickness: 7/8 to 1-1/4.
Therefore the presence of nitrites in urine is generally an indication of the presence of a urinary tract infection. A urinary tract infection may occur when the bacteria enter the urinary system through the bloodstream or via skin contact of the urethra with bacteria during urination.he results of a urinalysis identify and verify a number of different parameters, and nitrites in urine is one of them. Nitrites in urine is a condition that is different from nitrates in urine. The content of nitrates in urine is quite low.
Nitrates are a form of nitrogen, consumed in food additives and derived from protein metabolism. The presence of nitrates in the urine is generally considered normal. However, certain bacteria that are frequently the cause of urinary tract infection produce an enzyme that changes urinary nitrates to nitrites. Therefore, the presence of nitrites in the urine is an indirect indication of urinary tract infection. It's possible to have an infection without nitrites in the urine. The only bacteria that change nitrates to nitrites are Escherichia Coli (E. Coli), Klebsiella and Proteus. Other organisms that can cause urinary tract infection which do not cause nitrates to be converted to nitrites include Pseudomonas and enterococci.