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32.蜂蜜的颜色
有一篇讲honey的
第一段:以前人们觉得honey都是一个颜色的,其实不是的
第二段:鉴别honey质量方法是观测他的颜色,拿honey放到个什么仪器前面,然后观测他的颜色
第三段:有个company 发明了种More subjective way是新的一种P-什么开头的方法,company希望这个P什么方法能发挥地如同PH level-一种用于测试酒的质量的方法(有题,具体不记得了)
类似物:
THE honey sold in those squeezable, bear-shaped bottles is always the same golden-brown color. But the raw honey gathered by beekeepers can be as white as snow or as dark as a Budweiser bottle, and it must be blended in order to produce the consistent versions familiar to shoppers. Bees, it seems, don't concern themselves too much with the aesthetic preferences of human consumers.
But for beekeepers, honey hues are a primary concern. Paler honeys can be sold to producers at a premium, on the theory that their flavors are subtler and their tints more appealing to gourmet shoppers -- that is, those who buy their honey in glass jars rather than plastic, ursine bottles.
A classic industry tiff, then, has found the beekeeper who contends that his honey is virtually white arguing with the middleman who sniffs that it's merely a light amber.
Hanna Instruments invented the C 221 Honey Color Analyzer to end such quarrels. This laptop-sized gadget automatically grades a honey sample's color and settles once and for all whether a beekeeper's haul merits an extra few cents a pound.
Honey color assessment has typically been done with the help of a tool called a Pfund grader, a black box with a thin, see-through opening and a color chart that runs from white to brown. The sample is placed in front of the opening, and an observer matches the honey's color to a spot on the chart. The Pfund grade is determined by how many millimeters that spot deviates from the far left of the chart: zero to eight millimeters is known as ''water white,'' 8 to 17 millimeters is ''extra white,'' and so on. The darkest, at more than 114 millimeters to the right, is dark amber.
Any system that relies on eyeball judgments, of course, is doomed to create bickering.
''What I see and what you see might be two different things,'' said Michael Bogolawski, an applications engineer for Hanna, based in Woonsocket, R.I. ''I might say it's this grade, and you might say, 'No, it's closer to this grade.' With this meter, we've eliminated the subjectivity.''
The Hanna analyzer is similar to several of the company's other testing devices, which are used widely in the wine industry to measure pH levels and in the water industry to check for chlorine.
The honey grading machine is basically a photometer, which measures the amount of light absorbed by a substance. A tungsten lamp floods the sample with light, and a sensor measures precisely how much is reflected. The darker the honey, the fewer the rebounding photons.
The analyzer's software correlates the amount of returned light with the Pfund scale and gives a readout on a digital screen. Hanna says the analyzer's Pfund grades are accurate within two millimeters.
Though there are about 2.5 million commercial bee colonies in the nation, according to the Agriculture Department, Hanna understands that the market for its Honey Color Analyzer is somewhat narrow. Since the device made its debut in January 2004, the company's sales team has focused on attending trade shows, like the American Beekeeping Federation's annual convention, and traveling rural highways in search of professional beekeepers. Lou Niewiecki, a Hanna salesman, estimated that the company has sold ''a few hundred'' of the analyzers, at $500 apiece.
The Hanna machine, unfortunately, can't solve a more pressing problem in the industry: the invasion of the Varroa mite, a parasitic Asian insect that feasts on bee larvae. According to the National Honey Board, this ravenous mite has already destroyed up to 50 percent of the hives in California, the nation's largest honey producer.
If the situation persists, beekeepers may soon feel nostalgic for the days when their biggest headache was arguing over Pfund grades. |
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