On Sunday, April 24, 2016 at 4:21:40 PM UTC-5, Ed Pawlowski wrote:
> On 4/24/2016 5:14 PM, Rick Daly wrote:
> > I have two digital cooking thermometers, a ThermPro and a Lavatools Javelin Pro.
> > The ThermPro is the kind with a probe inserted into the meat while it cooks.
> > Javelin Pro is an instant read with the jackknife type probe that flips out.
> >
> > Today I was cooking a boneless pork roast and had theThermPro inserted and set
> > to go off at 145 degrees. It did. When I went to take the roast out of the oven,
> > I decided to check it with the Javelin Pro, only because it's new and I hadn't
> > used it yet. The Javelin Pro read 138 degrees. A 7 degree difference? Really?
> > Which one was right? Do I take the roast out or leave it for a little while
> > longer. Both got high ratings where I bought them. And the Javelin Pro is a $50
> > thermometer. Where do I place my trust?
> >
>
> Have you checked them in water together? I've had differences on the
> same thermometer when the probe was inserted just a little distance
> away. Check in ice water and hot water and get back to us.

Exactly. Calibrate to a known standard. First thing I do for Christmas Candy season is I boil the thermometers! 212F/100C!

John Kuthe...

On 24/04/2016 7:42 PM, John Kuthe wrote:
> On Sunday, April 24, 2016 at 4:21:40 PM UTC-5, Ed Pawlowski wrote:
>> On 4/24/2016 5:14 PM, Rick Daly wrote:
>>> I have two digital cooking thermometers, a ThermPro and a Lavatools Javelin Pro.
>>> The ThermPro is the kind with a probe inserted into the meat while it cooks.
>>> Javelin Pro is an instant read with the jackknife type probe that flips out.
>>>
>>> Today I was cooking a boneless pork roast and had theThermPro inserted and set
>>> to go off at 145 degrees. It did. When I went to take the roast out of the oven,
>>> I decided to check it with the Javelin Pro, only because it's new and I hadn't
>>> used it yet. The Javelin Pro read 138 degrees. A 7 degree difference? Really?
>>> Which one was right? Do I take the roast out or leave it for a little while
>>> longer. Both got high ratings where I bought them. And the Javelin Pro is a $50
>>> thermometer. Where do I place my trust?
>>>
>>
>> Have you checked them in water together? I've had differences on the
>> same thermometer when the probe was inserted just a little distance
>> away. Check in ice water and hot water and get back to us.
>
> Exactly. Calibrate to a known standard. First thing I do for Christmas Candy season is I boil the thermometers! 212F/100C!
>
> John Kuthe...
>
At sea level!