Abstract: An evaporative emission control canister system comprises an initial adsorbent volume having an effective incremental adsorption capacity at 25° C. of greater than 35 grams n-butane/L between vapor concentration of 5 vol % and 50 vol % n-butane, and at least one subsequent adsorbent volume having an effective incremental adsorption capacity at 25° C. of less than 35 grams n-butane/L between vapor concentration of 5 vol % and 50 vol % n-butane, an effective butane working capacity (BWC) of less than 3 g/dL, and a g-total BWC of between 2 grams and 6 grams. The evaporative emission control canister system has a two-day diurnal breathing loss (DBL) emissions of no more than 20 mg at no more than 210 liters of purge applied after the 40 g/hr butane loading step.

Abstract: An evaporative emission control canister system comprises an initial adsorbent volume having an effective incremental adsorption capacity at 25° C. of greater than 35 grams n-butane/L between vapor concentration of 5 vol % and 50 vol % n-butane, and at least one subsequent adsorbent volume having an effective incremental adsorption capacity at 25° C. of less than 35 grams n-butane/L between vapor concentration of 5 vol % and 50 vol % n-butane, an effective butane working capacity (BWC) of less than 3 g/dL, and a g-total BWC of between 2 grams and 6 grams. The evaporative emission control canister system has a two-day diurnal breathing loss (DBL) emissions of no more than 20 mg at no more than 210 liters of purge applied after the 40 g/hr butane loading step.

Abstract: An apparatus is described which is adaptable for use in coordinating UV/VIS absorbency values of a chromatography eluate containing antimicrobial constituents with bioautograph test results. Such an apparatus is comprised of a UV/VIS spectrophotometer equipped with a continuous recording monitor, a pair of parallel metering valves, a stream splitter, a rotatable drum adapted to hold a piece of absorbent material and means to rotate said drum. The method involves the use of such an apparatus in combination with the bioautograph test to coordinate said absorbency valves with the test results from a plurality of bioautograph test organisms.

Abstract: Disclosed are guitars having quick attach, quick release string securing mechanisms for use with string sets of measured lengths. A first embodiment of strings has loops formed on both ends, while a second embodiment of strings has a loop formed on one end and an anchor ball secured on the other. Each guitar disclosed has tuning mechanism including transversely extending string holding posts over which the string loops may be hooked. Guitars utilizing the first string embodiment have crosspiece structure carrying upwardly projecting posts around which the loops of the other strings ends can be hooked. The guitar utilizing the second string embodiment has crosspiece structure defining slotted rearwardly opening sockets for receiving the anchor balls secured on the other string ends. The string holding ends of each of the string holding posts are preferably formed as ball-shaped members and may be formed by screwing a ball on a treaded shaft.