Jump to content

  • Log in with Facebook Log in with Twitter Log in with Windows Live Log In with Google      Sign In   
  • Create Account

Submit your paper to J Biol Methods today!
Photo

Can medium containing starch be autoclaved?

Starch autoclave medium

  • Please log in to reply
36 replies to this topic

#31 SunsetSatine

SunsetSatine

    Enthusiast

  • Active Members
  • PipPipPipPipPip
  • 40 posts
2
Neutral

Posted 12 December 2012 - 01:51 PM

Ah! I see. Darn. 9g/100 mL puts my concentration at 9%. Per my calculations, I need to prepare 20%. Posted Image So, the calculations that I did above need to be adjusted from 20% to 9% correct?

#32 SunsetSatine

SunsetSatine

    Enthusiast

  • Active Members
  • PipPipPipPipPip
  • 40 posts
2
Neutral

Posted 12 December 2012 - 02:00 PM

I went ahead and add 50 mL of DI water to the solution to dilute it down, and it all dissolved. Does this mean that my solution is still 10% concentration? Or given the solubility, is it actually at 9% concentration?

#33 pito

pito

    Veteran

  • Global Moderators
  • PipPipPipPipPipPipPipPipPipPip
  • 1,334 posts
81
Excellent

Posted 13 December 2012 - 08:34 AM

I went ahead and add 50 mL of DI water to the solution to dilute it down, and it all dissolved. Does this mean that my solution is still 10% concentration? Or given the solubility, is it actually at 9% concentration?


You added 50ml to what?
WHat is your endvolume now?
10grams in 100ml or?

If you don't know it, then ask it! Better to ask and look foolish to some than not ask and stay stupid.


#34 SunsetSatine

SunsetSatine

    Enthusiast

  • Active Members
  • PipPipPipPipPip
  • 40 posts
2
Neutral

Posted 13 December 2012 - 09:15 AM

Final volume was 100 mL

#35 pito

pito

    Veteran

  • Global Moderators
  • PipPipPipPipPipPipPipPipPipPip
  • 1,334 posts
81
Excellent

Posted 13 December 2012 - 09:27 AM

Final volume was 100 mL


Wel then you have 10grams in 100Mml...

10% solution

If you don't know it, then ask it! Better to ask and look foolish to some than not ask and stay stupid.


#36 hobglobin

hobglobin

    Growing old is mandatory, growing up is optional...

  • Global Moderators
  • PipPipPipPipPipPipPipPipPipPip
  • 5,539 posts
101
Excellent

Posted 13 December 2012 - 09:47 AM


Final volume was 100 mL


Wel then you have 10grams in 100Mml...

10% solution

But not if only 9g are soluble in 100 mL....at room temperature there should be a precipitate visible of the remaining gram.

One must presume that long and short arguments contribute to the same end. - Epicurus
...except casandra's that belong to the funniest, most interesting and imaginative (or over-imaginative?) ones, I suppose.

That is....if she posts at all.


#37 pito

pito

    Veteran

  • Global Moderators
  • PipPipPipPipPipPipPipPipPipPip
  • 1,334 posts
81
Excellent

Posted 13 December 2012 - 09:50 AM



Final volume was 100 mL


Wel then you have 10grams in 100Mml...

10% solution

But not if only 9g are soluble in 100 mL....at room temperature there should be a precipitate visible of the remaining gram.


I am assuming he was able to dissolve it completely.

But indeed, you are right, is there is precipitation then its not 10% rather 9%

If you don't know it, then ask it! Better to ask and look foolish to some than not ask and stay stupid.






Home - About - Terms of Service - Privacy - Contact Us

©1999-2013 Protocol Online, All rights reserved.