Re: [RML] my rainbows & myco
Adrian Tappin (atappin at ecn.net.au)
Sun, 13 Jun 1999 08:32:30 +1000
At 07:27 13/06/99 +1000, you wrote:
>>----- Original Message -----
>>From: Deanne Gaskill <d.gaskill at qut.edu.au>
>>To: <rainbowfish at pcug.org.au>
>>Sent: Saturday, 12 June 1999 13:39
>>Subject: [RML] my rainbows & myco
>>
>>
>>> > . I have bought some
>>> pool chlorine to sterilise the hospital tank & all cleaning equipment
>>> (although it could be too late for the other community tanks). If the
>>> sterilising dose is 200ppm or 200mgm per litre could somebody advise how
>>> much chlorine (labelled as 650g/kg) I should use per litre. Thanx in
>>> advance. Deanne
>>>
>
>To calculate the dose rate of a chemical required in a given volume of water
>the formula is:
>Dose rate = required ppm x volume of water to be treated ÷ (% of active
>ingredient x 1,000,000)
>
>Example:
>To calculate the dose rate of 200 ppm of a chemical with an active
>ingredient of 650 grams/Kg in 100 litres of water = 200 ppm x 100 litres ÷
>(65% x 1,000,000)
>
>Active ingredient of chemical is 650 grams/litre = 0.650 grams/milliliter
>You need 200 parts per million (ppm) which translates to 200 milligrams per
>litre (mg/L)
>(1000 grams = 1 litre, 1000 milligrams = 1 gram, 1 million milligrams = 1
>litre or 1 mg/L = 1 ppm)
>100 litres at 200 mg/litre = 20000 mg or 200 grams
>200 grams needed divided by 0.650 grams/mil of chemical = 300 milligrams per
>100 litres of water
>
>I HOPE that's right - anyone else done the calculations????
Oops - I think that should be (3000 mg) = 30 grams per 100 litres water ?
Adrian.
Adrian R. Tappin
Brisbane, Australia.
"Home of the Rainbowfish"
http://www.ecn.net.au/~atappin/home.htm