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Offlineblackout
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Re: How to Make 150 ppm Chlorine Solution [Re: c10h12n2o]
    #23655258 - 09/18/16 11:39 AM (4 years, 2 days ago)

but he was a little confused about the specific gravity of water vs bleach (which is a common mistake, especially when discussing volume-volume vs weight-volume, its very easy to mix up;



I was not confused at all, I think maybe you were. I was not saying they have the same specific gravity but guessed it would be similar enough so as not to matter in what you are doing, making a dilute bleach solution.

I weighed 10ml of water a syringe there, scale showed 9.4g, 10ml of 5% labelled bleach was 9.7g on the same scale & syringe (this was thick bleach I had no thin on hand). Close enough for me to use interchangeably for making dilute bleach solutions. We are not weighing out diamonds or LSD, its not like the guys who came up with 150ppm found 149ppm was no good. And again you are just guessing how much bleach is still in your bottle as its degrading all the time.


Quote:

a gram is standardized as the weight of 1 ml h20


this is only under certain circumstances, but many people do think its close enough to use fact that 1gram of water around room temperature is approx 1ml. At boiling point some will decide to take account of the change in specific gravity, many still do not bother.

Quote:

the bleach solution i have weighs 1.26 grams per ml,


That is much higher than I would have guessed, does it have thickeners? how did you go about weighing it? did you weigh water at the same temperature to verfiy? I knew there would be inaccuracies in my syringe and scale, that is why I made sure to weight some water to compare "10ml" of water did not display 10g on my scale as I expected. Still would not be enough for me to worry about for making dilute bleach.


Edited by blackout (09/18/16 11:47 AM)


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Invisiblec10h12n2o
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Re: How to Make 150 ppm Chlorine Solution [Re: blindingleaf]
    #23656183 - 09/18/16 05:13 PM (4 years, 2 days ago)

Quote:

blindingleaf said:
every food service job I ever had we had to test the sanitizer water.  I don't even think u can pass a health inspection if u don't have test strips if ur brick and mortar store.

cool thread mang!  some mornings my tap water smells like a light bleach solution:sad:




much obliged my friend :smile: thanks for clearing that up!

oh goodness, ive seen that happen, i have a friend who lives near a bunch of coal mines and on some days they can light their tap water on fire with a lighter!!! no shit, its pretty scary that they drink that stuff... methane maybe? i know there are spots where methane bubbles out of the creeks nearby. between methane, chlorine, fluoride, lead, and tons of other stuff, tap water composition can vary greatly between locations/sources


Quote:

c10h12n2o said:
but he was a little confused about the specific gravity of water vs bleach (which is a common mistake, especially when discussing volume-volume vs weight-volume, its very easy to mix up;




Quote:

blackout said:
I was not confused at all, I think maybe you were. I was not saying they have the same specific gravity but guessed it would be similar enough so as not to matter in what you are doing, making a dilute bleach solution.

I weighed 10ml of water a syringe there, scale showed 9.4g, 10ml of 5% labelled bleach was 9.7g on the same scale & syringe (this was thick bleach I had no thin on hand). Close enough for me to use interchangeably for making dilute bleach solutions. We are not weighing out diamonds or LSD, its not like the guys who came up with 150ppm found 149ppm was no good. And again you are just guessing how much bleach is still in your bottle as its degrading all the time.




please be specific/clear for the sake of anyone reading, what was i confused about? i would love to learn something, but saying "I would imagine 1ml of your bleach is near enough to 1gram" sounds like the definition of being confused about the specific gravity of water vs bleach (or weight-volume vs volume-volume calculations, or both). please clarify if i am misunderstanding something

the point is this: distilled h2o at room temp has a specific gravity of 1, but different brands of bleach will have a different specific gravity based on the amount of thickeners, dissolved solids, etc., as you yourself mentioned, tested, and observed

you are talking about making a "dilute bleach solution", which is a lot less specific than what this tek is about. this is how to calculate and make a 150 ppm chlorine solution, not a "dilute bleach solution." All eagles are birds, but not all birds are eagles. make sense?

no one said a 149 ppm solution wouldnt kill pseudomonas, i just wanted to make sure people had the info at hand to make the calculations for making a 150 ppm solution based on the available chlorine of their particular sodium hypochlorite product. why would we guess about specific gravity when the correct volume is so easily obtainable, especially in a ppm solution?

if you are talking about making a ppm solution, it is absolutely bad advice to cut corners or make any assumptions about the measurements, specific gravity, etc., and misunderstanding how to calculate weight-volume vs volume-volume solutions is a fast track to inaccuracy, which has no place in calculating ppm solutions. that might be sufficient for making a "dilute bleach solution" but it is an entirely insufficient way to calculate parts per million

more mass within a specific volume = higher specific gravity

if you do it the right way (calculating based on the sample at hand, not assumptions), it works every time, you dont have to try to find "thin" or "thick" bleach as you describe

the bleach is a liquid and the final ppm solution is aqueous, so volume (not weight) is the probably the best way to calculate this solution. weight and volume are not interchangeable, that is the point, something i would hope we can all agree on.

you could technically calculate it either way (by weight or by volume) but you have to be consistent with the units and type of measurements you use (not mixing up weight-volume and weight-weight and volume-volume), and making assumptions about the specific gravity of a substance (x volume = y weight) is the wrong way to do any of those


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Re: How to Make 150 ppm Chlorine Solution [Re: c10h12n2o]
    #23656233 - 09/18/16 05:33 PM (4 years, 2 days ago)

Quote:

I weighed 10ml of water a syringe there, scale showed 9.4g, 10ml of 5% labelled bleach was 9.7g on the same scale & syringe




worry about calibrating your scale first buddy.


want to talk about chlorine smelling water, Milwaukee routinely tests above 2ppm out of the tap.

even though the reports I've asked for always say its 1.2-2ppm


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Re: How to Make 150 ppm Chlorine Solution [Re: bodhisatta]
    #23656795 - 09/18/16 08:42 PM (4 years, 2 days ago)

lol there he is, i knew bodhi was still out there haha... still kinda throwin up in my mouth a bit from that fapping comment about the pseudomonas on babies, that was some sick shit bro lmao... talk about "desensitized by hardcore/violent porn" hahaha

Quote:

Trusted cuItivator said:
Quote:

I weighed 10ml of water a syringe there, scale showed 9.4g, 10ml of 5% labelled bleach was 9.7g on the same scale & syringe




worry about calibrating your scale first buddy.



excellent point, slipped right by me, thanks for bringing that up. As bodhi points out, 10 ml h2o should be very close to 10g (with the only differences being dissolved solids and other adulterants, and atmospheric conditions (temp, pressure, etc), and we are talking a very minor difference, otherwise either the method of measuring volume was off, the method of measuring weight (scale) was off, or both. 

Quote:

Trusted cuItivator said:
want to talk about chlorine smelling water, Milwaukee routinely tests above 2ppm out of the tap.

even though the reports I've asked for always say its 1.2-2ppm




damn bro for real? seems like if you could smell it it would have to be substantially greater than 2 ppm , unless you been hanging out in water storage tanks smelling the offgasing from a few thousand gallons... do you take any special precautions for that, either personally or for your projects? i mainly use purified water for everything, since i have city water and god knows whats in it

apparently
Quote:

The EPA requires treated tap water to have a detectable level of chlorine to help prevent contamination. The allowable chlorine levels in drinking water (up to 4 parts per million) pose “no known or expected health risk [including] an adequate margin of safety.”




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Re: How to Make 150 ppm Chlorine Solution [Re: c10h12n2o]
    #23656908 - 09/18/16 09:19 PM (4 years, 2 days ago)

Quote:

c10h12n2o said:
10 ml h2o should be very close to 10g



this is why I asked if you weighed water with your own method of determining the specific gravity of your bleach -your result seemed high to me, and checking bleaches that do quote SG it does indeed seem overly high, I expect my scales to be more accurate than my syringe, which is why I made sure to test both. This is also why I was careful and 10ml in quotes and said my scale "displayed" a value, pre-empting, which turns out I was right to do but it was still was seemingly not recognised why I did so.
Quote:


"10ml" of water did not display 10g on my scale as I expected




Maybe it has additives which we would not want. What brand is your bleach? It does not state on the bottle if it is % by volume or weight. Looking up data sheets it seems chlorox do it by weight, as do others. Seems the higher % ones are more likely to be done by weight.

https://www.ultrapurewater.com/articles/cooling_water/can-bleach-degradation-in-sodium-hypochlorite-storage-tanks-be-controlled

https://www.google.ie/url?sa=t&rct=j&q=&esrc=s&source=web&cd=7&cad=rja&uact=8&ved=0ahUKEwiK1MrUrJrPAhXGCcAKHYnHCa0QFgg_MAY&url=https%3A%2F%2Fwww.rjschinner.com%2Fblog%2Ftrainingaides%2FJanSan%2FDilutionCalculatorCloroxGermicidalBleach.xlsx&usg=AFQjCNGCqZoUkvkWkqzo_0-lcprWozHFmA&sig2=KugBLshT_7-Nd5xc5U-WPA


Edited by blackout (09/18/16 09:33 PM)


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Re: How to Make 150 ppm Chlorine Solution [Re: blackout]
    #23656938 - 09/18/16 09:30 PM (4 years, 2 days ago)

If it's a % both units have to match. So if it's 3% bleach that means by volume if it's filled by volume. Or weight of its filled by weight.

the unit "%" is sometimes incorrectly used to denote mass concentration, also called "mass/volume percentage." A solution with 1 g of solute dissolved in a final volume of 100 mL of solution would be labeled as "1%" or "1% m/v" (mass/volume). The notation is mathematically flawed because the unit "%" can only be used for dimensionless quantities. "Percent solution" or "percentage solution" are thus terms best reserved for "mass percent solutions" (m/m = m% = mass solute/mass total solution after mixing), or "volume percent solutions" (v/v = v% = volume solute per volume of total solution after mixing). The very ambiguous terms "percent solution" and "percentage solutions" with no other qualifiers, continue to occasionally be encountered.


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Re: How to Make 150 ppm Chlorine Solution [Re: bodhisatta] * 1
    #23657533 - 09/19/16 02:04 AM (4 years, 2 days ago)

Quote:

blackout said:
Quote:

c10h12n2o said:
10 ml h2o should be very close to 10g



this is why I asked if you weighed water with your own method of determining the specific gravity of your bleach -your result seemed high to me, and checking bleaches that do quote SG it does indeed seem overly high, I expect my scales to be more accurate than my syringe, which is why I made sure to test both. This is also why I was careful and 10ml in quotes and said my scale "displayed" a value, pre-empting, which turns out I was right to do but it was still was seemingly not recognized why I did so.




you are very confused buddy, more than i thought. yes, i weighed water (btw i use a triple beam lab balance and calibrated digital lab scale, which i check against each other), and as it should be 1ml = 1g, 10 ml = 10g, and so on.

and you say "your own method of determining specific gravity," when my entire point is that in a volume-volume solution, the specific gravity is irrelevant. in no part of the process i outline does one determine the specific gravity of bleach.

the only reason i brought up the fact that different products/brands will have different specific gravities is because you incorrectly suggested that 1g=1ml, and that weight measurements could be substituted for precise volume measurements, which is terrible advice (especially in this context) and needed to be corrected for the sake of clarity/accuracy

Quote:

blackout said:
Quote:


"10ml" of water did not display 10g on my scale as I expected




Maybe it has additives which we would not want. What brand is your bleach? It does not state on the bottle if it is % by volume or weight. Looking up data sheets it seems chlorox do it by weight, as do others. Seems the higher % ones are more likely to be done by weight.

https://www.ultrapurewater.com/articles/cooling_water/can-bleach-degradation-in-sodium-hypochlorite-storage-tanks-be-controlled

https://www.google.ie/url?sa=t&rct=j&q=&esrc=s&source=web&cd=7&cad=rja&uact=8&ved=0ahUKEwiK1MrUrJrPAhXGCcAKHYnHCa0QFgg_MAY&url=https%3A%2F%2Fwww.rjschinner.com%2Fblog%2Ftrainingaides%2FJanSan%2FDilutionCalculatorCloroxGermicidalBleach.xlsx&usg=AFQjCNGCqZoUkvkWkqzo_0-lcprWozHFmA&sig2=KugBLshT_7-Nd5xc5U-WPA




my bleach brand? Smart Sense concentrated bleach. but that is completely beside the point. the process outlined in OP works regardless of your brand of bleach, regardless of the specific gravity a particular brand of bleach happens to have.

clorox, and every other bleach product that i have ever bought is sold and labeled based on volume (usually by the gallon), and the percentages of the active ingredients and available chlorine are also by volume.

it sounds like you are really confused (or misinformed) about how to interpret data sheets, ppm concentrations, weigh-weight vs weight-volume vs volume-volume solutions, and the concept of specific gravity (i think you can clear up the confusion by reading bodhi's post below, if mine arent making sense to you)

dont get mad/offended or take it personal, i really think you will agree if you take a step back and look at what we are talking about, we just need to be clear for the benefit of readers

i really dont think there is an argument here

Quote:

Trusted cuItivator said:
If it's a % both units have to match. So if it's 3% bleach that means by volume if it's filled by volume. Or weight of its filled by weight.

the unit "%" is sometimes incorrectly used to denote mass concentration, also called "mass/volume percentage." A solution with 1 g of solute dissolved in a final volume of 100 mL of solution would be labeled as "1%" or "1% m/v" (mass/volume). The notation is mathematically flawed because the unit "%" can only be used for dimensionless quantities. "Percent solution" or "percentage solution" are thus terms best reserved for "mass percent solutions" (m/m = m% = mass solute/mass total solution after mixing), or "volume percent solutions" (v/v = v% = volume solute per volume of total solution after mixing). The very ambiguous terms "percent solution" and "percentage solutions" with no other qualifiers, continue to occasionally be encountered.




thanks for sharing bodhi, i was hoping someone who knows more about math and lab technique than i do would drop in to explain better than i could. im really ignorant about math, and have a lot left to learn about everything

succinctly put, very helpful. +5 :mushroom2: for another great explanation :rockon: Ive found myself +1'ing several of your posts lately and just realized i hadnt rated you

its really easy to make mistakes with weight and volume calculations, especially since it is so common for people to talk about "percent solutions" (or "ppm solutions" for that matter) without qualifiers, as you said. like i mentioned before, ive personally known 2 people who have DIED from making careless mistakes with measuring microgram doses and making ppm solutions. both were intelligent guys, one flat-out brilliant, and i miss the hell out of him :frown: even smart people make careless mistakes and act on bad info, which underscores the need for clear, accurate info

obviously we arent dealing with fentanyl here, and burnt shrooms arent going to kill anyone, but the same principles apply, and the same 2 stage dilution process is useful

i think the discussion in this thread is a great illustration how easy it is to make these kinds of mistakes


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Re: How to Make 150 ppm Chlorine Solution [Re: c10h12n2o]
    #23658699 - 09/19/16 01:53 PM (4 years, 1 day ago)

my old boss though 1% was 1ppm
:facepalm:
even harder to deal with than BO :lol:

I tried to explain that if you're talking about PPM then 1,000,000 is 100% so that means 100,000PPM is 10% and 10,000PPM is 1%

the whole reason being that PPM is great for talking about things less than 1%

I even sketched it out on paper as a bar graph representation. no avail.


maths is hard.

he ended up buying a 10kg pail of hop oil once to make a beer just a little more bitter after it had already been brewed. I needed less than 100mL for 3,720 gallons of ready to go beer. good job you just threw wasted 900$


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Re: How to Make 150 ppm Chlorine Solution [Re: bodhisatta]
    #23658966 - 09/19/16 03:21 PM (4 years, 1 day ago)

:doh:


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Re: How to Make 150 ppm Chlorine Solution [Re: bodhisatta]
    #23659469 - 09/19/16 06:27 PM (4 years, 1 day ago)

Quote:

bodhisatta said:
my old boss though 1% was 1ppm
:facepalm:
even harder to deal with than BO :lol:

I tried to explain that if you're talking about PPM then 1,000,000 is 100% so that means 100,000PPM is 10% and 10,000PPM is 1%

the whole reason being that PPM is great for talking about things less than 1%

I even sketched it out on paper as a bar graph representation. no avail.


maths is hard.

he ended up buying a 10kg pail of hop oil once to make a beer just a little more bitter after it had already been brewed. I needed less than 100mL for 3,720 gallons of ready to go beer. good job you just threw wasted 900$




good god man, i guess be glad he was your boss and not your anesthesiologist or pharmacist lol.... or the guy with the pill press making fake pharmaceuticals out of fentanyl analogues :/ fuckin scary world we live in

lol that is actually an excellent explanation of ppm vs percent: you could really think of parts per million vs parts per cent (hundred)

though of course, first we have to define "parts," and our units have to be consistent throughout. as bodhi stated before, ppm and percent solutions are uselessly ambiguous if they are not qualified as either by volume or by weight (or both in really bad instructions)

hahaha what a waste!! 3700 gallons!!!??? wow if he wasnt the boss i bet his ass woulda been toast, he shoulda let you handle the measurements. I ALWAYS second-guess myself, especially about important stuff, so i always try to get someone smarter than me to check my math (my accountant). With drugs, i look up and check the dosages and effects and contraindications every time, regardless of how many times ive done it. it is so easy to make careless mistakes, even for smart people. Im terrible at math



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― Friedrich Nietzsche


Edited by c10h12n2o (08/28/20 08:10 PM)


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Re: How to Make 150 ppm Chlorine Solution [Re: c10h12n2o]
    #23659482 - 09/19/16 06:35 PM (4 years, 1 day ago)

no it was 30% isohumulone that we wasted. it came in basically a 5 gal bucket

( isohumulone the bitter taste from hops that makes beer taste bitter )

so 1ppm isohumulone in water or beer = 1 IBU. beer's max solubility happens to be roughly 100ppm isohumulone depending on the beer. but anyone advertising a beer > 100 IBU is bullshit because 100 IBU is 100% as bitter as beer can get. unless your read homebrew books and get all sorts of dumb information in your head. like that bullshit Tinseth IBU calculator that's responsible for half of all craft breweries giving dumbass IBU numbers on their beers

so for 3720g(14,000,000mL) to be raised up 2 IBU you would need 28mL of 100% isohumulone. it's only 30% so you need ~93mL of the 30% solution he bought like 5-6 gallons worth of.


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Re: How to Make 150 ppm Chlorine Solution [Re: c10h12n2o]
    #23661768 - 09/20/16 02:30 PM (4 years, 18 hours ago)

Quote:

c10h12n2o said:you are very confused buddy, more than i thought.



the only thing confusing me is that you still seem to be missing my point...

Quote:

c10h12n2o said:and you say "your own method of determining specific gravity," when my entire point is that in a volume-volume solution, the specific gravity is irrelevant. in no part of the process i outline does one determine the specific gravity of bleach.



I was referring to the value you got for your bleach, not your original post, it seemed overly high.

Quote:

c10h12n2o said:you incorrectly suggested that 1g=1ml



I said
Quote:

I would imagine 1ml of your bleach is near enough to 1gram. The solution called for in TMC was 150-250ppm so no need to be overly worried, and your bleach will be degrading anyway so what is on the bottle will not be overly accurate.



If you really think "near enough" means the same as "exactly equal to" then you are certainly confused about the English language. I knew it would not be the exact same specific gravity as water, I brew beer and distill and have hydrometers for both, I am well aware of what it is. I guessed it would be good enough for most people who want to aim for the TMC range for sanitizing. The poster I was really replying to was the one asking if a scales is adequate, and it certainly is as we certainly do not need to exact. At least kinetic (and I hope others) understood my point even if it went over your head.


Quote:

my bleach brand? Smart Sense concentrated bleach. but that is completely beside the point.



I wanted to see if the data sheet was out there, to see if the specific gravity matched what you found, and to see if it was by weight or volume. Or if there were additives which made it so high.

Quote:

c10h12n2o said:clorox, and every other bleach product that i have ever bought is sold and labeled based on volume (usually by the gallon), and the percentages of the active ingredients and available chlorine are also by volume.



I don't recall seeing volume or weight indicated on any bleach I got. Here is a data sheet for clorox
https://www.thecloroxcompany.com/wp-content/downloads/bleach/cloroxregular-bleach12015-06-12.pdf
it states it has 5-10% sodium hypochlorite by weight. and says " The exact percentage (concentration) of composition has been withheld as a trade secret.", bringing my back to my point that you have no idea how much is in your bleach, as it is both degrading and some are not even declaring it anyway accurately. Its like getting a vernier calipers out to etch a line perfectly midway on a log, then sticking on a blindfold and taking an axe to it, when all you want is a bit of firewood anyway.

There are plenty of sites suggesting some bleach is sold with the % being weight.

http://www.handymath.com/cgi-bin/chlorined2.cgi?submit=Entry

Quote:

Common household bleach solution is typically 5.25% by weight sodium hypochlorite.




https://www.ultrapurewater.com/articles/cooling_water/can-bleach-degradation-in-sodium-hypochlorite-storage-tanks-be-controlled
Quote:

Sodium hypochlorite solutions ranging from 3% to 8.25% NaOCl by weight are sold as common household bleach. Recently, Clorox increased its standard bleach from 5.5% to 8.25% NaOCl by weight.





and a clorox data sheet listed as "Concentration 8.25%"
https://www.gcnorris.com/myfiles/downloads/concentrated%20bleach%20brochure%20js%20fs.pdf

Quote:


*Degrades with age and exposure to sunlight and heat. Check the level of available chlorine with a test kit.
^This product is an 8.25% sodium hypochlorite solution containing approximately 7.85% available chlorine by weight.
The available chlorine levels in the chart above were based on 7.85% available chlorine.




Yours was 8.25% and 7.86% available chlorine.


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Re: How to Make 150 ppm Chlorine Solution [Re: blackout]
    #23662015 - 09/20/16 03:43 PM (4 years, 17 hours ago)

i will tell you like my grandpa told me: "you open your mouth and you remove all doubt" :rofl:

missing your point? you haven't made a point, or clearly stated any argument. i really think you should dial back the animosity a bit, and think

"near enough" is not the correct way to calculate anything, especially not a ppm solution, please dont spread misinformation

the fact that you would think the specific gravity of my bleach sounds "overly high" underscores how many assumptions you are making, since nothing but being confused about specific gravity could lead you to make such a speculative assumption

you keep talking about specific gravities (though you seem to have a poor grasp of the concept), but specific gravity is completely irrelevant to calculating a ppm solution by volume

the process outlined in this thread tells people how to calculate and create a ppm solution by volume safely, and it works REGARDLESS of the specific gravity, type/brand of chlorine source, or the "additives" you keep speculating about. "thickness," "brand," and specific gravity are completely irrelevant if you do it correctly

bleach is usually sold by volume, if you cant figure that out from your gallon of bleach, its going to be damn hard for you to interpret data sheets

i really dont think there is an argument here. if there is, please state it clearly. nitpicking unrelated concepts out of context isnt really making a point. A solution can be made by weight, and measured by volume, or made by volume and measured by weight, but the units have to match up (cant substitute weight for volume). We are talking about 2 (maybe three if you count W-V) different ways to measure something, they are not mutually exclusive, it doesnt have to be one or the other. but in doing the calculations, the units absolutely have to be consistent . so a solution could be created by weight, and measured, labeled, and sold by volume

you are more than welcome to substitute weight for volume, use "near enough" assumptions about measurements, and guesstimate all you want for your projects, no one is stopping you. but that is absolutely horrible advice for anyone trying to make a ppm solution


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Edited by c10h12n2o (09/20/16 03:53 PM)


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OfflineKenetic
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Re: How to Make 150 ppm Chlorine Solution [Re: c10h12n2o]
    #23662036 - 09/20/16 03:52 PM (4 years, 17 hours ago)

I see you updated your OP. 

Can you just elaborate on this point:

my bleach is 7.86% available chlorine. in other words 1 gallon of this bleach = 0.0786 gallons of chlorine. So to calculate how much of this bleach i need to use to make a 150 ppm chlorine solution:

.15 ml chlorine = 1.908 ml of this brand bleach


Sorry, I'm terrible at math and was wondering if you explain it.


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Re: How to Make 150 ppm Chlorine Solution [Re: Kenetic]
    #23662068 - 09/20/16 04:01 PM (4 years, 16 hours ago)

Just finished reading this. WOW. Not really sure what I just read lol :facepalm:


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Re: How to Make 150 ppm Chlorine Solution [Re: Kenetic]
    #23662076 - 09/20/16 04:03 PM (4 years, 16 hours ago)

for sure buddy

luckily, your bleach has the exact same numbers as mine, so that makes things simple :laugh:

you are spot on with your math, assuming you are calculating for 1000ml, 1.908 ml of 7.86% available chlorine bleach

since its damn hard to measure that small, and at that concentration being off a little will throw it WAY outta whack, the next step is to dilute 10 ml bleach in 90 ml h2o, and make sure its evenly mixed. then measure 19.08 ml of your pre-mix (which is equivalent to 1.908 ml undiluted), and add 980.92 ml of h2o

make sense? i suck at math as well, but i trust bodhi will bust my ass if i say something stupid lol

Quote:

JacobStorm said:
Just finished reading this. WOW. Not really sure what I just read lol :facepalm:




did you have a question about anything? we are just talking about how to make a 150 ppm chlorine solution, which is often recommended to treat pseudomonas (worked great for me), i just wanted to document the process in case anyone else wanted to know how to do the same


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Edited by c10h12n2o (09/20/16 04:05 PM)


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Re: How to Make 150 ppm Chlorine Solution [Re: c10h12n2o]
    #23662105 - 09/20/16 04:19 PM (4 years, 16 hours ago)

Ok.  So far so good.

So what method or tool can I use to measure 19.08 ml of the diluted solution?  Or 980.92 ml of the water I need to add to the solution?  Or can I safely use roughly 19 ml of dilute and mix with roughly 981 ml of water?

I just have a couple 10cc syringes and standard cookware, and neither is hardly accurate enough to divide ml.  Any ideas?

Also, is there any way to test it with a strip or something?


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Re: How to Make 150 ppm Chlorine Solution [Re: Kenetic]
    #23662181 - 09/20/16 04:44 PM (4 years, 16 hours ago)

7.86% v/v
Think of your bleach as
78600ppm

Say you want to make one gal of 150ppm solution

C1V1=C2V2

(78600)(?)=(150ppm)(1gal or 3785mL)
78600x=567750
X=7.25mL give or take.

Take 3785-7.25mL water and then add the 7.25mL concentrate to make a final volume of 3785mL 150ppm


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Re: How to Make 150 ppm Chlorine Solution [Re: Kenetic]
    #23662194 - 09/20/16 04:49 PM (4 years, 16 hours ago)

you should be golden.

i recommend using either a graduated cylinder or pipette like the ones here:


but a syringe should work fine, as long as you are using a pre-mix (2 stage dilution). if you have a small syringe use that, but if you only have 10cc, pull 10 ml, then pull another 9.08 (just slightly under the .1 line). fortunately, using a pre-mix increases our margin for error by 10x, so the difference between .1 and .08 is only a couple thousandths (rather than hundredths)

for measuring the water, i use a larger graduated cylinder, but a measuring cup or beaker would be fine. Or you could buy 1 liter of water, then use your 10cc syringe to draw out 19.08ml of water from it, and replace with 19.08 ml premix

im glad you brought up test kits, i hadnt thought to check! looks like there are strips that measure chlorine ppm , i just ordered some from amazon

http://www.webstaurantstore.com/15-chlorine-test-paper-dispenser-10-200ppm/373CM240.html?utm_source=Google&utm_medium=cpc&utm_campaign=GoogleShopping&gclid=Cj0KEQjwvIO_BRDt27qG3YX0w4wBEiQAsGu3eWoPleIiHzxNrJoOh_7pxhNE0xkv708nHHYcGsfhGGkaAlM-8P8HAQ

https://www.amazon.com/Industrial-Test-Systems-WaterWorks-480024/dp/B00DIJ0IY8/ref=sr_1_5?ie=UTF8&qid=1474407387&sr=8-5&keywords=chlorine+ppm+test

https://www.amazon.com/Hydrion-Cm-240-Chlorine-Dispenser-10-200/dp/B00513TNHM/ref=sr_1_1?ie=UTF8&qid=1474407387&sr=8-1&keywords=chlorine+ppm+test

but as long as you follow the instructions, you should be very close, if not within the effective range. I still cant believe how effective it was in clearing up my pseudomonas problem (though the increased airflow was also essential, since the solution has to evaporate to be effective


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Re: How to Make 150 ppm Chlorine Solution [Re: bodhisatta]
    #23662200 - 09/20/16 04:51 PM (4 years, 16 hours ago)

Say you want to make 1000ml

78600ppm(7.86%) * x = 150ppm * 1000

X= 1.908..mL

Ok its hard to measure that. So take one spoon of bleach and 9 spoons of water. Spoon can be any small volume like a shot glass.

So that's a 10% solution you need 19.08ml or 19ml and then dump that in a spray bottle and fill to the 1L line.

You'll be within 140-160ppm with the slight inaccuracies in measurement


Basically what c10 said. But with the math display a hair different so whatever clicks best in your head


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