Australia's Science Forum

My kids do their own prac while soil testing they allow the end of the dropper to touch the soil than screw the dropper back on the bottle
Next morning I find all the dropper teat are blown up like a balloon or burst
Beautiful children!!!!!!!!!!!!!!!!!!!!

I would think as you heated peroxide it would give off it's extra O becoming warm water
That's why I store my H2O2 in fridge

See me "take a bow'

Yes but they are only 1/4W

The average small resistors are only 1/4 W, the best idea is to buy ceramic resistors. They charge about 40c each for 5 W and about $1.80 for 10W What I do is buy double the resistance value I need and wire 2 together in parallel this halves the resistance but doubles the wattage Therefore I get a 1...

Just to prove a point
Sun ray has posted answer in the wrong thread

You might have noticed with names like Loopy & Sunray that to be a Labbie you have a head start if you are slightly CRAZY

If a Him, you could fix it so he sings saprano in future.
You are well fixed for rusty scalpel blades I take it

Just use Acetone to clean off rubber from parts and order new belt
No Drama's

Keep that under your hat! Kim
Science You either love it or hate it
Most are here because we love it

BTW Happy Birthday Bindi

Last year I purchased 3 Adam Balances 200g x 0.01g
I could not be happier with Quality, Price & they are childproof
Go for it!

Ok! if your spinal cord brain stem are in the fridge
How are you getting around?

I once ordered 48 hearts for dissection and was sent bullock hearts
I supplied everyone with dog food

That's what I said mate!
If you want a thing done right, "Do it Yourself"

It's a man thing Dave!
We are confident that even if we bugger it they are no further behind
Where the girls are scared to have a go.
Go for it girls! the sence of achievement when you succeed is enormous

I could not see a problem with 2M or less.
Even if they don't have the taps you can buy them from Bunnings providing they have provision for taps

Do you know anyone with 4WD that changes their own oil
Penrite oil comes in 10 L containers with tap under lid
I would not use for conc. in them, but for decanting into many bottles for prac exam I would not be with out them
The only problem is they are solid black and you can't see the level

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!

The short answer is NO!