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| Tea (rec.drink.tea) Discussion relating to tea, the world's second most consumed beverage (after water), made by infusing or boiling the leaves of the tea plant (C. sinensis or close relatives) in water. |
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I'm also looking for this... I bought a Cuisipro some weeks ago. It's
not accurate at all... According to what I read on some espresso group, the dial (see http://www.tabletools.com/tabletools...ermometer.html) thermometers are never accurate, and the Taylor digital thermometers (http://www.wholelattelove.com/itemIm...1019XLarge.gif) are better. I have also read that (from http://www.coffeegeek.com/forums/espresso/general/53870) : ============== A couple of general comments on thermometers IIM-- Most manufacturers have more than one product line. Taylor is a well respected product but has an economy line which you're likely to find at a housewares store. Calibration is a good feature if you have a good standard to calibrate with. Ice water and boiling water are handy but not always accurate. One good standard is a lab grade mercury filled thermometer with 0.1 degree C accuracy. These are hard to come by (even before 9/11). Lab supply companies are reluctant to sell to individuals for obvious reasons. Another is to buy your thermometer from a vendor who can supply a NIST certificate (extra cost). This certificate ensures that a qualified metrologist has calibrated your thermometer and it should be good for a year. There's no inherent difference in accuracy between a digital and analog thermometer. Fast response time is a function of construction and CAN be achieved with either. A supplier of good dial thermometers for milk frothing and other coffeegeek applications is Mannix (http://www.mannix-inst.com/index.php) ============== |
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I'm also looking for this... I bought a Cuisipro some weeks ago. It's
not accurate at all... According to what I read on some espresso group, the dial (see http://www.tabletools.com/tabletools...ermometer.html) thermometers are never accurate, and the Taylor digital thermometers (http://www.wholelattelove.com/itemIm...1019XLarge.gif) are better. I have also read that (from http://www.coffeegeek.com/forums/espresso/general/53870) : ============== A couple of general comments on thermometers IIM-- Most manufacturers have more than one product line. Taylor is a well respected product but has an economy line which you're likely to find at a housewares store. Calibration is a good feature if you have a good standard to calibrate with. Ice water and boiling water are handy but not always accurate. One good standard is a lab grade mercury filled thermometer with 0.1 degree C accuracy. These are hard to come by (even before 9/11). Lab supply companies are reluctant to sell to individuals for obvious reasons. Another is to buy your thermometer from a vendor who can supply a NIST certificate (extra cost). This certificate ensures that a qualified metrologist has calibrated your thermometer and it should be good for a year. There's no inherent difference in accuracy between a digital and analog thermometer. Fast response time is a function of construction and CAN be achieved with either. A supplier of good dial thermometers for milk frothing and other coffeegeek applications is Mannix (http://www.mannix-inst.com/index.php) ============== |
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Ummm...OK. call me ignorant, but why should that matter that it's within a
tenth of a degree for national security purposes? Wouldn't a thermometer like that be useful for candymaking too or somethng? Sorry if I'm dense but I don't get it, seems a bit silly to me. Or do you mean the "lab grade" part? Melinda "BenoitF" wrote in message ups.com.. snip \ Calibration is a good feature if you have a good standard to calibrate with. Ice water and boiling water are handy but not always accurate. One good standard is a lab grade mercury filled thermometer with 0.1 degree C accuracy. These are hard to come by (even before 9/11). Lab supply companies are reluctant to sell to individuals for obvious reasons. snip A supplier of good dial thermometers for milk frothing and other coffeegeek applications is Mannix (http://www.mannix-inst.com/index.php) ============== |
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Actually, the 0.1 degree accuracy is not important at all... The point
of the one who wrote this on coffeegeek.com is that those thermometers are accurate (they will not indicate 80 degrees if the water is at 95 degree, which is, believe me, quite common with a lot of those dial thermometers, even the one that aren't cheap). And as you know, the difference in brewing tea at 80 degrees vs. at 95 degrees is quite important... |
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Ummm...OK. call me ignorant, but why should that matter that it's within a tenth of a degree for national security purposes? Wouldn't a thermometer like that be useful for candymaking too or somethng? Sorry if I'm dense but I don't get it, seems a bit silly to me. Or do you mean the "lab grade" part? Melinda I think the national security issue is the "lab grade" mercury. |
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different teas call for different temps; especially some of your
greens. depending on how tender the leaves are, it could ruin the batch entirely if the temp is too hot. Mydnight -------------------- thus then i turn me from my countries light, to dwell in the solemn shades of an endless night. |
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BenoitF wrote:
Calibration is a good feature if you have a good standard to calibrate with. Ice water and boiling water are handy but not always accurate. One good standard is a lab grade mercury filled thermometer with 0.1 degree C accuracy. These are hard to come by (even before 9/11). Lab supply companies are reluctant to sell to individuals for obvious reasons. i don't see any reason to be concerned with calibration. you'll have to play around with your teas' steeping temps regardless. you'll have to figure out that you like a particular tea steeped at temperature x and this other tea at temperature x+20; it doesn't really matter then if x=140. the thermometer needs to be accurate, but it doesn't seem to matter much if it's calibrated. cheers! chuck |
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BenoitF wrote:
Calibration is a good feature if you have a good standard to calibrate with. Ice water and boiling water are handy but not always accurate. One good standard is a lab grade mercury filled thermometer with 0.1 degree C accuracy. These are hard to come by (even before 9/11). Lab supply companies are reluctant to sell to individuals for obvious reasons. i don't see any reason to be concerned with calibration. you'll have to play around with your teas' steeping temps regardless. you'll have to figure out that you like a particular tea steeped at temperature x and this other tea at temperature x+20; it doesn't really matter then if x=140. the thermometer needs to be accurate, but it doesn't seem to matter much if it's calibrated. cheers! chuck |
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Very simple to check these things -
two tests: 1. Put ice approx 50/50 in water and let it stabilize for several minutes measute the WATER (not ice) temperature. It must be exactly 0 C (32 F) 2. Measure the temperatiure of boiling water. It mut be exactly 100C (212 F). That is if you live approx at sea level. If not - its should be less 2 deg F or every 1000 feet of elevation. If your thermometer passes, most porobably its -OK one. But there may be another test you want to go throu. Take as much water that would take approx 2-3 min to get boiled on your stove. Put a thermometer in it (not touching the vessel) and tart heating. Watch the thermometer and throw it away if it moves even with a single jerky movement or acceleration. It must be very smooth. I use a computer digital thermometer (two for $25 at CompUSA). they have almost zero mass sensor with a long wire. Zero mass makes it very fast and sensitive and long wire allow me to sticj the thermometer above my stove and just put the sensor inside a hole in the teapot lid (or under it). Sasha. "chuck marx" wrote in message oups.com... BenoitF wrote: Calibration is a good feature if you have a good standard to calibrate with. Ice water and boiling water are handy but not always accurate. One good standard is a lab grade mercury filled thermometer with 0.1 degree C accuracy. These are hard to come by (even before 9/11). Lab supply companies are reluctant to sell to individuals for obvious reasons. i don't see any reason to be concerned with calibration. you'll have to play around with your teas' steeping temps regardless. you'll have to figure out that you like a particular tea steeped at temperature x and this other tea at temperature x+20; it doesn't really matter then if x=140. the thermometer needs to be accurate, but it doesn't seem to matter much if it's calibrated. cheers! chuck |
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Very simple to check these things -
two tests: 1. Put ice approx 50/50 in water and let it stabilize for several minutes measute the WATER (not ice) temperature. It must be exactly 0 C (32 F) 2. Measure the temperatiure of boiling water. It mut be exactly 100C (212 F). That is if you live approx at sea level. If not - its should be less 2 deg F or every 1000 feet of elevation. If your thermometer passes, most porobably its -OK one. But there may be another test you want to go throu. Take as much water that would take approx 2-3 min to get boiled on your stove. Put a thermometer in it (not touching the vessel) and tart heating. Watch the thermometer and throw it away if it moves even with a single jerky movement or acceleration. It must be very smooth. I use a computer digital thermometer (two for $25 at CompUSA). they have almost zero mass sensor with a long wire. Zero mass makes it very fast and sensitive and long wire allow me to sticj the thermometer above my stove and just put the sensor inside a hole in the teapot lid (or under it). Sasha. "chuck marx" wrote in message oups.com... BenoitF wrote: Calibration is a good feature if you have a good standard to calibrate with. Ice water and boiling water are handy but not always accurate. One good standard is a lab grade mercury filled thermometer with 0.1 degree C accuracy. These are hard to come by (even before 9/11). Lab supply companies are reluctant to sell to individuals for obvious reasons. i don't see any reason to be concerned with calibration. you'll have to play around with your teas' steeping temps regardless. you'll have to figure out that you like a particular tea steeped at temperature x and this other tea at temperature x+20; it doesn't really matter then if x=140. the thermometer needs to be accurate, but it doesn't seem to matter much if it's calibrated. cheers! chuck |
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chuck marx wrote:
BenoitF wrote: Calibration is a good feature if you have a good standard to calibrate with. Ice water and boiling water are handy but not always accurate. One good standard is a lab grade mercury filled thermometer with 0.1 degree C accuracy. These are hard to come by (even before 9/11). Lab supply companies are reluctant to sell to individuals for obvious reasons. i don't see any reason to be concerned with calibration. you'll have to play around with your teas' steeping temps regardless. you'll have to figure out that you like a particular tea steeped at temperature x and this other tea at temperature x+20; it doesn't really matter then if x=140. the thermometer needs to be accurate, but it doesn't seem to matter much if it's calibrated. cheers! chuck Sure it does, if you want your tea knowledge to be connected to a standard independent of a thermometer that may break tomorrow. |
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chuck marx wrote:
BenoitF wrote: Calibration is a good feature if you have a good standard to calibrate with. Ice water and boiling water are handy but not always accurate. One good standard is a lab grade mercury filled thermometer with 0.1 degree C accuracy. These are hard to come by (even before 9/11). Lab supply companies are reluctant to sell to individuals for obvious reasons. i don't see any reason to be concerned with calibration. you'll have to play around with your teas' steeping temps regardless. you'll have to figure out that you like a particular tea steeped at temperature x and this other tea at temperature x+20; it doesn't really matter then if x=140. the thermometer needs to be accurate, but it doesn't seem to matter much if it's calibrated. cheers! chuck Sure it does, if you want your tea knowledge to be connected to a standard independent of a thermometer that may break tomorrow. |
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You can see two pocket digital thermometers at:
http://cgi.ebay.com/ws/eBayISAPI.dll...8563 206&rd=1 http://cgi.ebay.com/ws/eBayISAPI.dll...038049 7&rd=1 hth wrote in message oups.com... Hi, I'm finally breaking down and buying a thermometer - any recomendations for an good (that is, accurate) one and where to buy it? Thanks! Sally |
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You can see two pocket digital thermometers at:
http://cgi.ebay.com/ws/eBayISAPI.dll...8563 206&rd=1 http://cgi.ebay.com/ws/eBayISAPI.dll...038049 7&rd=1 hth wrote in message oups.com... Hi, I'm finally breaking down and buying a thermometer - any recomendations for an good (that is, accurate) one and where to buy it? Thanks! Sally |
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