This might be a blonde question
I've been all over town looking for starch powder, can't buy in the supermarkets anymore everything is in a spray tin. To order through normal suppliers on average 500gms $30-$100.
Any idea what I could use instead, thats quick and easy
Thanks
starch powder
Re: starch powder
I knew I was having a blonde moment
ta
ta
Re: starch powder
Soluble starch laboratory grade (LR) 500g $30 at Serrata.
Easy use and very soluble no need for boiling.
Lada
Easy use and very soluble no need for boiling.
Lada
- bindibadgi
- Posts: 293
- Joined: 13 May 2009, 09:37
- Suburb: Kensington Park
- State/Location: SA
Re: starch powder
Smiley posted the answer a while ago - thanks Smiley!
I now have a couple of bags of packing beads stashed away & don't bother buying starch powderAnd I use those little starch packing beads. I will never use starch powder ever again! Experiment a little, but from memory it's between 5 packing beads per 100ml for a strong solution. I think I ended up at 10 beads per 500mL for last year's Vitamin C titrations.
Recipe is: 10 packing beads in a large beaker.
Add 300ml of very hot water.
Stir a lot - I use a magnetic stirrer
Add cold water to bring it up to 500mL
Filter if necessary to get the glunky bits out.
Too easy!
bindibadgi
Re: starch powder
Good idea!! I sometimes use it as well. Good for junior science.
Lada
Lada
Re: starch powder
I ordered starch powder a long time ago and was sent cornflower.
It didn't work not soluable
Ordered again Soluble starch and sent some orange stuff, (think sweet potato) terrible!
For food testing I now always boil a little bit of rice strain water
Works perfect every time!
It didn't work not soluable
Ordered again Soluble starch and sent some orange stuff, (think sweet potato) terrible!
For food testing I now always boil a little bit of rice strain water
Works perfect every time!
-
- Posts: 1795
- Joined: 20 Mar 2007, 10:00
- Job Title: Lab Assistant
- Suburb: Tamworth
- State/Location: NSW
Re: starch powder
corn flour is soluble if you mix it with boiling water (goes really thick and gluggy) and then add cold water to dilute it a bit. I, too, keep the packing beads but my box has gone missing... I guess someone either thought they were rubbish or decided to use them to pack something! Will start accumulating them again now...
- nickykinz
- Posts: 271
- Joined: 02 Feb 2009, 12:53
- Job Title: Lab Assistant
- School: St Augustine's College
- Suburb: Augustine Heights
- State/Location: QLD
Re: starch powder
Yes, mix cornflour or starch with cold water then pour in boiling water from kettle to make up to quantity required. It does settle after a while but just needs a shake.
Nicky
St Augustine's College
Augustine Heights, QLD 4300
St Augustine's College
Augustine Heights, QLD 4300