Ok I asked the experts and got two conflicting answers when mixing chlorine

[Roadblock]

Here is the question I put to them , I have 650 liters of water and have a Chlorine solution of 13.9% chlorine, how much do I add to make 5 ppm chlorine in the 650 ml water, which one is right and how can they be so far apart?

Here is Chatgpgs answer. So, you would need to add approximately 232 milliliters of the 13.9% chlorine solution to 650 liters of water to achieve a 5 ppm chlorine concentration.

And here is a Chorine calculators answer. 24.55 millilitres of bleach to 649.98 litres of water

Here is the calculator.

Chlorine Dilution Calculator | Public Health Ontario

Calculates how much bleach product to dilute with water to get your desired concentration (ppm) of chlorine solution.

www.publichealthontario.ca

Here is Chatgpgs long answer.

Let's use the formula mentioned earlier to calculate the amount of 13.9% chlorine solution needed:
Amount of Chlorine Solution=(Target Concentration×Volume of WaterConcentration of Chlorine Solution)Amount of Chlorine Solution=(Concentration of Chlorine SolutionTarget Concentration×Volume of Water)
Given:

• Target Concentration (�2C2) is 5 ppm (convert to a decimal by dividing by 1,000,000: �2=0.000005C2=0.000005),
• Volume of Water (�2V2) is 650 liters, and
• Concentration of Chlorine Solution (�1C1) is 13.9% (convert to a decimal by dividing by 100: �1=0.139C1=0.139).

Now plug in the values:
Amount of Chlorine Solution=(0.000005×6500.139)Amount of Chlorine Solution=(0.1390.000005×650)
Calculate the result:
Amount of Chlorine Solution≈0.000005×6500.139≈0.232 litersAmount of Chlorine Solution≈0.1390.000005×650≈0.232liters
To convert liters to milliliters, multiply by 1000:
0.232 liters×1000=232 ml0.232liters×1000=232ml

 

[LeastExpectedGrower]

Why are you considering 'ChatGPT' an 'expert'? It's literally famous for making up answers.

I personally would skip online calculators, etc. and literally do it. yourself with a meter. Grab a liter of water (or maybe 5) and start adding measured amounts and testing with a meter.

 

[Roadblock]

Its shouldnt make mistakes with numbers its mathematics, Chlorine meters are expensive the test strips are not very accurate and I don't have any when I was trying to get answer, it just amazes me how one can give an answer 10 times the other.

The calculator seems to be right.

 

[Billy the Mountain]

Here is the question I put to them , I have 650 liters of water and have a Chlorine solution of 13.9% chlorine, how much do I add to make 5 ppm chlorine in the 650 ml water, which one is right and how can they be so far apart?

Here is Chatgpgs answer. So, you would need to add approximately 232 milliliters of the 13.9% chlorine solution to 650 liters of water to achieve a 5 ppm chlorine concentration.

And here is a Chorine calculators answer. 24.55 millilitres of bleach to 649.98 litres of water

Here is the calculator.

Chlorine Dilution Calculator | Public Health Ontario

Calculates how much bleach product to dilute with water to get your desired concentration (ppm) of chlorine solution.

www.publichealthontario.ca

Here is Chatgpgs long answer.

Let's use the formula mentioned earlier to calculate the amount of 13.9% chlorine solution needed:
Amount of Chlorine Solution=(Target Concentration×Volume of WaterConcentration of Chlorine Solution)Amount of Chlorine Solution=(Concentration of Chlorine SolutionTarget Concentration×Volume of Water)
Given:

• Target Concentration (�2C2) is 5 ppm (convert to a decimal by dividing by 1,000,000: �2=0.000005C2=0.000005),
• Volume of Water (�2V2) is 650 liters, and
• Concentration of Chlorine Solution (�1C1) is 13.9% (convert to a decimal by dividing by 100: �1=0.139C1=0.139).

Now plug in the values:
Amount of Chlorine Solution=(0.000005×6500.139)Amount of Chlorine Solution=(0.1390.000005×650)
Calculate the result:
Amount of Chlorine Solution≈0.000005×6500.139≈0.232 litersAmount of Chlorine Solution≈0.1390.000005×650≈0.232liters
To convert liters to milliliters, multiply by 1000:
0.232 liters×1000=232 ml0.232liters×1000=232ml

You believe ChatGTP over the Ontario Dept. of Health?

6500 ≠ 650 liters

 

[Roadblock]

You believe ChatGTP over the Ontario Dept. of Health?

6500 ≠ 650 liters

Thats what I said it appears the chlorine calculator is right, Im not good at maths in fractions.

 

[Tolerance Break]

Chlorine strips are plenty accurate, you just need the right strip for what you're measuring.

I used to measure it all out with a scale, now I just eyeball it. Haven't once had an issue (besides maybe creating chlorine gas one time?)

 

[Star Dog]

For 5 ppm:

Mix up a 1.0ec chlorine solution (500 ppm/tds)

1ml of that 500ppm solution added to 1ltr of nutrient = 5 ppm chlorine.

Double check the figures

 

[Lou66]

Its shouldnt make mistakes with numbers its mathematics

ChatGPT makes up literally any answer. In some cases it is not creative enough to use more than one reference so the answer can be correct. But that is by accident. The way the underlying model is designed it is not supposed to happen.

 

[Billy the Mountain]

For 5 ppm:

Mix up a 1.0ec chlorine solution (500 ppm/tds)

1ml of that 500ppm solution added to 1ltr of nutrient = 5 ppm chlorine.

Double check the figures

That's not correct,
1 ec = 500 ppm (mg/l) only applies to NaCl (table salt).
You must stick to weight to accurately obtain a given ppm of a chlorine solution.

 

[Star Dog]

That's not correct,
1 ec = 500 ppm (mg/l) only applies to NaCl (table salt).
You must stick to weight to accurately obtain a given ppm of a chlorine solution.

Idk what you mean?
I'm taking a known of 500 ppm and dividing it, it's maths.
500 ppm is 500 ppm does it matter that its not salt?

 

[Lou66]

Idk what you mean?
I'm taking a known of 500 ppm and dividing it, it's maths.
500 ppm is 500 ppm does it matter that its not salt?

A bleach solution with an EC of 1 does not have 500 ppm chlorine in it.

 

[Billy the Mountain]

Idk what you mean?
I'm taking a known of 500 ppm and dividing it, it's maths.
500 ppm is 500 ppm does it matter that its not salt?

The problem is you don't have a 500 mg/l solution to dilute in the first place.
The 500 ppm = 1EC "equivalent" is only applicable to table salt and cannot be applied to other solutions.

 

[Star Dog]

A bleach solution with an EC of 1 does not have 500 ppm chlorine in it.

It does have 500 ppm though and if you divide it you end up with 5ppm.

 

[Lou66]

It does have 500 ppm though and if you divide it you end up with 5ppm.

A solution with an EC of 1 has a electrical conductivity of 1 mS/cm. That doesnt tell anything about what is in the solution and in what amount.

Bleach is made by dissolving sodium chloride (rather unpure sodium chloride I should add) in water and passing an electric current through it. Some of the salt electrolyses creating lye and chlorine gas (and side products from the contanimants of the salt). Of that chlorine a portion reacts with the lye making sodium hypochlorite (maybe other stuff too).
Now tell me how much active chlorine is in that solution if it has an EC of 1.

 

[Kola_Kreator]

It does have 500 ppm though and if you divide it you end up with 5ppm.

Your math is correct. What billy is saying is that chlorine can not be measured with a nutrient ppm metre. The nutrient ppm metre measures the salt content of the water using electrical conductivity. Chlorine ppm can not be measured using this method.

 

[Kola_Kreator]

The best way to accurately measure chlorine is to use the molar weight. Read the label on the concentrate. Figure out the concentration percentage by molar weight and then dilute to 5 ppm.

 

[Star Dog]

I use chlorine tablets they're ideal, easy to calculate ppm.
You're starting with a known ppm of chlorine so you divide it accordingly.