ballon 500 ml borosilicio 3.3

this is a good egg ??

just a caps very natural, like the vine caps (quercus sugher)


http://www.laboandco.it/prod-3824-Pallone-a-fondo-piatto---500-ml---TGI.html

This are the ones I am using...

No way to see by the pic wich stopper it is.
Anyway we know that plastic stoppers are not so good...
The classic "pallone" for chemical use is OK.
Flat in the bottom for thermic plate, round in shape for thermic mantle.

I think that glass stopper well luted is the better.
Tappo di vetro smerigliato ben fatto...

500 ml / 1000 ml.

Zosimo

Now I see the flask in the pic is 250 or less ml...

Zosimo

I've received your email, please contact me about more informations.

If you use MSN contact me by email.

Thks

Here is a better picture... this may help...
this is a blue chemical stoper, very good for hight temperatures...



4 weeks in the process.... kind of blurry



Good luck

Zosimo wrote:

Now I see the flask in the pic is 250 or less ml...

Zosimo

Hi there,

It is a 500 ml...

I hope with all my heart that the technical gum stopper really fits and keeps the pressure...
But - for what Nick said until now - it's better to avoid plastic and synthetic material.
This beacause we don't know what actually has weakened Nick's dew & salt alkahest. Nick, honestly, express us all his doubt.

About the thermometer I will use the contact one thermocouple (with infrared laser option), because we already know more or less what is the difference between inside and outside temperature.

I wish you a Good Opera.

Zosimo

Oscar:

The blue stopper will probably be O.K. in the water bath, but when you go to the sand bath and your at 200+
degrees F. You might have a problem around the thermometer. I would get some copper wire 18 gauge and wire the stopper in when you go to the higher temp. You may want to try a hot melt glue gun to seal the thermometer. Onec you hit 200 degrees that will be your weak point.

We are not sure what effect the rubber stopper will have on the process.

All the best,



MO-1

magnum.opus1 wrote:

Oscar:

The blue stopper will probably be O.K. in the water bath, but when you go to the sand bath and your at 200+
degrees F:

Hi Magnun, thanks for the tip, but I am using a C degrees thermomether... which 200F = 93.33C and the termometer that I am using takes 150+C.

PS.
And for the people that don´t know this are special stopers for chemical work, that are use for hight temperature... there is not any type of leak.