11.   An unopened tin or jar should be used within about a week.

12.   And frozen blood must be used within two hours of being thawed.

13.   Better oils have a harvest date listed on their labels, and should be used within a year, preferably six months of purchase.

14.   A company spokesman said Texaco had received assurances that the gasoline would be used only within Montenegro, which has said it is neutral in the current conflict.

15.   Buy only clean, uncracked eggs, keep them refrigerated, use them within five weeks of purchase and avoid eating raw or undercooked egg yolks in any form.

16.   Copper is used within the home for telecommunications, piping, air conditioning, plumbing and electronic appliances.

17.   Donated bikes are put in good working order and painted a distinct color to deter theft, then set loose for anyone to use within the city limits.

18.   Either shoots or sprouts are not good keepers, so buy them when they have that fresh-picked look, and use them within a day or two.

19.   Even so, Arner said that he had no problem with the idea, and city officials insisted that the prints would be used only within the welfare system.

20.   Fresh ricotta, with its creamy texture and sweet, milky flavor, is best used within a day of two of buying it.