Scottish Rock Garden Club Forum
General Subjects => General Forum => Topic started by: Hans J on December 03, 2010, 11:04:35 AM
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Hi all ,
who knows which concentration Potassium permanganate ( KMnO4 ) must be used ?
I will use is for desinfection of seeds , watering seedlings and similar ....
By searching here I have found not so precise information ( only after colors ) ....I would prefer it in % !
Potassium permanganate it also used in medical purpose ,also for Aquaristic and more ....
I would be glad if anybody can help
Thank you in advance
Hans
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I'd suggest something in the range 0.1-1% (1-10 g/L) Hans, maybe less if you plan to water seedlings though.
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Ashley ,
many thanks for your information :)
It seems not so many members use this product .... ::)
Are the expierences not so well ?
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Potassium permanganate it also used in medical purpose ,also for Aquaristic and more ....
Did we not use this as a synergist to produce oxygen in the grade 7 school lab?
johnw
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It seems not so many members use this product .... ::)
Are the expierences not so well ?
I never had problems with it. I just added enough crystals to colour the water.
Now I use hydrogen peroxide. It is already mixed, and can be bought everywhere.
It is good for using on people as well, and doesn't turn them purple. I just use
it occasionally, though, for oncocyclus iris seeds and a few others.
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I sometimes use it at the rate of 1/2 a tsp (sorry, not a percentage) in a 10 litre can of water, watered on to bring worms and others to the top of my troughs, so they can be removed.
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I sometimes use it at the rate of 1/2 a tsp (sorry, not a percentage) in a 10 litre can of water, watered on to bring worms and others to the top of my troughs, so they can be removed.
Hans,
That's pretty much like a percentage - take a teaspoon - fill it fifty-fifty with the crystals. Then weigh them and you are able to figure out the %!
Not really scientific - but it works! ;)
Gerd
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Thank you all for your informations !
Gerd :....but Lesley use it for bring out worms .....
Diane : I use also H2O2 for desinfection of seeds ....but KMnO4 seems to have more possiblities :
desinfection for seeds , push up the germinate rate ...and a good growing of roots.
I think H2O2 is only for desinfection
I hope Janis will also maybe answer to this topic -he wrote he use KMnO4 also for sowing....
Hans
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I sometimes use it at the rate of 1/2 a tsp (sorry, not a percentage) in a 10 litre can of water, watered on to bring worms and others to the top of my troughs, so they can be removed.
Most granular solids have a density around 2. Hence, Lesley's half teaspoon is abt 5 grams. Her 10 litres is 10 kg. Hence the concentration she gets is about 0.05% by weight.
Approximate, yes, but close enough for government work (as they say).