Scioly.org

Interesting. I will take this into account next year

TheChiScientist wrote:Wait a minute! I keep hearing all this talk of different beakers.Are you, people implying that the rules allow different material beakers? If so what type of beakers are you people using? I am using Pyrex Beakers.

Wait the rules don't say anything about the material right?

arv101 wrote:

TheChiScientist wrote:Wait a minute! I keep hearing all this talk of different beakers.Are you, people implying that the rules allow different material beakers? If so what type of beakers are you people using? I am using Pyrex Beakers.

Wait the rules don't say anything about the material right?

The rules say "2 identical, unaltered, glass or plastic, standard (height~1.4 times the diameter) 250 mL beakers;"

However, they don't usually check the height of the beaker rule; I've seen quite a few plastic pyrex beakers that violate that rule but are still allowed to be used in competition by the event procters

Interesting but then that means plastic beakers are better insulators

TheChiScientist wrote:Interesting but then that means plastic beakers are better insulators

But it doesn't matter because your external beaker is also plastic.

I don't think the 1.4 rule is supposed to be extremely specific. It's just so people don't come in with graduated cylinders or something like that.

CookiePie1 wrote:

TheChiScientist wrote:Interesting but then that means plastic beakers are better insulators

But it doesn't matter because your external beaker is also plastic.

It probably matters less, but I think you'd have to do some testing to see if it doesn't matter at all. But certainly its effect is tiny, if at all.

Still, every point counts.

JoeyC wrote:However, they don't usually check the height of the beaker rule; I've seen quite a few plastic pyrex beakers that violate that rule but are still allowed to be used in competition by the event procters

When you say that the plastic beakers violate the rule you mean because of their height/ dimensions right? Its not because of its material or company right?

Yes, their heights aren't near 1.4 times their diameters; these are mainly the wide plastic pyrex beakers.