ppm conversion question

[smokey!]

what does 0.5 and 0.7 conversion mean???




{{{qoute)))I just kept my reservoir below 1150 PPM @ .5 conversion and its all good. }}}}


this is the meter i have if it helps you answer my question
http://www.htgsupply.com/viewproduct...roductID=47643

[smokey!]

bumpbump

[smokey!]

buuuuuuuuuuuuuuuuump

[smokey!]

bump........................

[Aym777]

Make up 50 mls vol of 25 ppm from 100 ppm

EXAMPLE

25 x 50 / 100 = 12.5 mls. i.e. 12.5 mls of 100 ppm in 50 ml volume will give a 25 ppm solution

Ppm (parts per million) to % (parts per hundred)


Example:


1 ppm = 1/1,000,000 = 0.000001 = 0.0001%
10 ppm = 10/1,000,000 = 0.00001 = 0.001%
100 ppm = 100/1,000,000 = 0.0001 = 0.01%
200 ppn = 200/1,000,000 = 0.0002 = 0.02%
5000 ppm = 5000/1,000,000 = 0.005 = 0.5%
10,000 ppm = 10000/1,000,000 = 0.01 = 1.0%
20,000 ppm = 20000/1,000,000 = 0.02 = 2.0%

(Parts per hundred) % to ppm


Example:


0.01% = 0.0001
0.0001 x 1,000,000 = 100 ppm


2.72 pounds per acre-foot
= 1 ppm

1,233 grams per acre-foot
= 1 ppm

1.233 kilograms per acre-foot = 1 ppm
0.0283 grams per cubic foot
= 1 ppm

0.0000624 pounds per cubic foot
= 1 ppm

0.0038 grams per US gallon
= 1 ppm

0.058419 grains per US gallon
= 1 ppm

0.07016 grains per Imperial gallon = 1 ppm
1 milligram per litre
= 1 ppm

1 microlitre ( µL ) per litre = 1 ppm
0.001 gram per litre
= 1 ppm

8.345 pounds per million gallons of water
= 1 ppm

HOPE IT IS MORE USEFULL THAN CONFUSING

[G'kar]

Originally Posted by smokey!

what does 0.5 and 0.7 conversion mean???




{{{qoute)))I just kept my reservoir below 1150 PPM @ .5 conversion and its all good. }}}}


this is the meter i have if it helps you answer my question
http://www.htgsupply.com/viewproduct...roductID=47643

There are three conversion factors which various manufacturers use for displaying ppm's...

USA 1 ms/cm (EC 1.0 or CF 10) = 500 ppm
European 1 ms/cm (EC 1.0 or CF 10) = 640 ppm
Australian 1 ms/cm (EC 1.0 or CF 10) = 700 ppm

For example,
Hanna, Milwaukee 1 ms/cm (EC 1.0 or CF 10) = 500 ppm
Eutech 1 ms/cm (EC 1.0 or CF 10) = 640 ppm
Truncheon 1 ms/cm (EC 1.0 or CF 10) = 700 ppm

Calculating the conversion factor
If your meter allows you to switch between EC and TDS units, your conversion factor can be easily determined by dividing one by the other.

Place the probe in the solution and read TDS in ppm. Change to EC on the meter and read EC in ms/cm.

Conversion factor = ppm / ec.
[Note: ms must be converted to us: One millisiemen = 1000 microsiemens (1.0 ms/cm = 1000.0 us/cm)

According to the chart below:
1.0 ms/cm = 500 ppm (USA Hanna)
1000 us/cm = 500 ppm

Conversion factor = ppm / (ms/cm * 1000)
.50 = 500ppm / (1000us/cm) ]

The answer is your meter's convertion factor and should be a number between 0.50 and 0.72 To improve accuracy, take ec and ppm readings from your res daily for about ten days. Average the conversion factors. The more data points that you use, the closer you will be to finding your true conversion factor.

[smokey!]

ok ididnt get anything either of you guys said i just wanna know what conversion my ppm meter uses