Ice Point Calibration

[@NIST]

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[@veryboringname.]

Wow, gumdrops over there are a lot larger than the gumdrops I find in Australia. Is there a national standard gumdrop size?

[@shailashah9965]

I studied that a mixture of ice and water that is In equilibrium with air saturated with vapour is called ice point of water... I do not understand why they mention air saturated with vapour.. please explain..

[@delpiero028]

¿how I can know the measurement uncertainty of a point of ice prepared in my laboratory? and ¿how i can do corrections for athmospheric pressure?. Thanks!

[@NIST]

victor sanchez NIST Technical Note 1411 (www.nist.gov/pml/upload/TN1411.pdf) describes a method for producing an ice melting point that is reproducible to within 0.002 C, whereas the method shown in the video is reproducible to within 0.01 C. To determine your total measurement uncertainty, combine uncertainty components in root sum square. Uncertainty components should include the ice melting point realization uncertainty (e.g., reproducibility) as well as uncertainties associated with the thermometer and measurement system. The correction for varying atmospheric pressure is -0.0072 C/atm, meaning that a 1 atm change in pressure will depress the ice melting point temperature by -0.0072 C.

[@nufiqu]

there is no tool like this in Indonesia :3 I very appreciate every research of measurement tools of metrology, all this things increasing our confidence of measurement :D

[@ajayyadav5284]

sir Ice point is abondend as standard point why??? and now over a day's water triple point is used

[@NIST]

steve voelpel "The kelvin, unit of thermodynamic temperature, is the fraction 1/273.16 of the thermodynamic temperature of the triple point of water." www.bipm.org/en/CGPM/db/13/4/. The triple point of water is 0.01 C, or 32.018 F.

[@hawaii596]

I believe Mr. Voelpel has found another "fixed point" (humor intended). There is the freeze point at 32 F, the Triple Point of Water (+0.010 Deg C), and now the temperature of Ice Water. Perhaps he is "right" (humor still intended) that this is the temperature of ice water; but not of the Ice Point Bath.

[@SolarizeYourLife]

Brrr...0°C is coold...

[@stevealienman767]

i have ben calibrating temperature since 1969 and the temperature you are telling people to calibrate to is not right it is not 32 F Degrees. in ice and water it is 36 F Degrees. and you need to mix up the water and ice. And it should be calibrated to 36 F degrees it is a more constant temperature there is no way it can be 32 F Degrees en less it is solid ice. i show in my 2 videos on KZbin titled correct calibration with ice. In one of my videos i show the ice solid with no water that's when it is 32 F. not when it has water in between the ice.The 2'ND video shows ice and water 36 F at room temperature. it has to be solid ice to be 32 F i have put the water and ice in the freezer and froze it solid the took it out then it was showing 32 F Degrees when there is ice cubs with water it is 36 F at room temperature not 32 F. A lot of you people are not calibrating it right and are telling people wrong. 36 F for your ice point it is more constant temperature with water and ice in a warm room