Re: regarding flourides/Divi

[Guest guest]

0.05% means you have 0.05 parts per 100 parts. You want to know how many parts per million. So, you must multiply 0.05 by (1,000,000/100). The answer is 0.05 x 10,000, or 500 ppm.

Therefore:

Y(PPM) = Y(%) X 10000

as far as i know this is the right equation for any similar question .however I would like to know from you Divi and from all other colleague how got the answers what equation they rely on?

From: Divi Divi <divi_ore@...>" " < > Sent: Monday, 6 February 2012, 10:08Subject: Re: regarding flourides

0.05 % NaF mouthwash has 225ppm F.

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Monday, 6 February 2012 8:23 AMSubject: Re: regarding flourides

Hi sajitha

Are these values different for different percentages?

Can u give me the source, actually from where i can stdy this?

anyways, thanks for ur answer.....

From: Sajithakumari Sivaprem <ssajithakumari@...>" " < > Sent: Sunday, 5 February 2012 11:17 PMSubject: Re: regarding flourides

hi kanika,

0.05{NaF} mouthwash contains 0.O23 percent F.=0.23 mg=230 ppm

sajitha

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Sunday, 5 February 2012 8:58 PMSubject: regarding flourides

Hi all

Can u help me finding the answer of this question

0.05% fluoride mouthwash contains how much ppm?

options are 225,250,900,1000

when i calculate it, it comes to be 500.

Any help would be appreciated.

[Guest guest]

I was doing it in the same way but we have to remembermouthwash contain neutral NaF= 4.5%for 0.05% = 4.5\1000*0.05=.000225=225 ppmthis was told by ahmed.thanks to him. From: Areej Abbas <areej.aldura@...> " " < > Sent: Monday, 6 February 2012 9:19 PM Subject: Re: regarding flourides/Divi

0.05% means you have 0.05 parts per 100 parts. You want to know how many parts per million. So, you must multiply 0.05 by (1,000,000/100). The answer is 0.05 x 10,000, or 500 ppm.

Therefore:

Y(PPM) = Y(%) X 10000

as far as i know this is the right equation for any similar question .however I would like to know from you Divi and from all other colleague how got the answers what equation they rely on?

From: Divi Divi <divi_ore@...>" " < > Sent: Monday, 6 February 2012, 10:08Subject: Re: regarding flourides

0.05 % NaF mouthwash has 225ppm F.

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Monday, 6 February 2012 8:23 AMSubject: Re: regarding flourides

Hi sajitha

Are these values different for different percentages?

Can u give me the source, actually from where i can stdy this?

anyways, thanks for ur answer.....

From: Sajithakumari Sivaprem <ssajithakumari@...>" " < > Sent: Sunday, 5 February 2012 11:17 PMSubject: Re: regarding flourides

hi kanika,

0.05{NaF} mouthwash contains 0.O23 percent F.=0.23 mg=230 ppm

sajitha

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Sunday, 5 February 2012 8:58 PMSubject: regarding flourides

Hi all

Can u help me finding the answer of this question

0.05% fluoride mouthwash contains how much ppm?

options are 225,250,900,1000

when i calculate it, it comes to be 500.

Any help would be appreciated.

[Guest guest]

bare with me Kanika now ; why and how 4.5 % got to do with the question .from the question I felt they wanted to know if we know about how to transfer or interpret % into ppm plus having no 500 in the options does not make it wrong cause so time the feedbacker unable to remember all the opitions were given at the exam.

need your clarification konika if you may .

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Monday, 6 February 2012, 21:30Subject: Re: regarding flourides/Divi

I was doing it in the same way but we have to remember

mouthwash contain neutral NaF= 4.5%

for 0.05% = 4.5\1000*0.05=.000225=225 ppm

this was told by ahmed.

thanks to him.

From: Areej Abbas <areej.aldura@...>" " < > Sent: Monday, 6 February 2012 9:19 PMSubject: Re: regarding flourides/Divi

0.05% means you have 0.05 parts per 100 parts. You want to know how many parts per million. So, you must multiply 0.05 by (1,000,000/100). The answer is 0.05 x 10,000, or 500 ppm.

Therefore:

Y(PPM) = Y(%) X 10000

as far as i know this is the right equation for any similar question .however I would like to know from you Divi and from all other colleague how got the answers what equation they rely on?

From: Divi Divi <divi_ore@...>" " < > Sent: Monday, 6 February 2012, 10:08Subject: Re: regarding flourides

0.05 % NaF mouthwash has 225ppm F.

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Monday, 6 February 2012 8:23 AMSubject: Re: regarding flourides

Hi sajitha

Are these values different for different percentages?

Can u give me the source, actually from where i can stdy this?

anyways, thanks for ur answer.....

From: Sajithakumari Sivaprem <ssajithakumari@...>" " < > Sent: Sunday, 5 February 2012 11:17 PMSubject: Re: regarding flourides

hi kanika,

0.05{NaF} mouthwash contains 0.O23 percent F.=0.23 mg=230 ppm

sajitha

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Sunday, 5 February 2012 8:58 PMSubject: regarding flourides

Hi all

Can u help me finding the answer of this question

0.05% fluoride mouthwash contains how much ppm?

options are 225,250,900,1000

when i calculate it, it comes to be 500.

Any help would be appreciated.

[Guest guest]

Areej, I only knew that 0.05% NaF provide 225 ppm of F. yes thats exact equation is explained by Ahmed. Thanks for the explanation Ahmed. From: Kanika Kohli <kanika_sahil@...> " " < > Sent: Monday, 6 February 2012 9:30 PM Subject: Re: regarding

flourides/Divi

I was doing it in the same way but we have to remembermouthwash contain neutral NaF= 4.5%for 0.05% = 4.5\1000*0.05=.000225=225 ppmthis was told by ahmed.thanks to him. From: Areej Abbas <areej.aldura@...> " " < > Sent: Monday, 6 February 2012 9:19 PM Subject: Re: regarding flourides/Divi

0.05% means you have 0.05 parts per 100 parts. You want to know how many parts per million. So, you must multiply 0.05 by (1,000,000/100). The answer is 0.05 x 10,000, or 500 ppm.

Therefore:

Y(PPM) = Y(%) X 10000

as far as i know this is the right equation for any similar question .however I would like to know from you Divi and from all other colleague how got the answers what equation they rely on?

From: Divi Divi <divi_ore@...>" " < > Sent: Monday, 6 February 2012, 10:08Subject: Re: regarding flourides

0.05 % NaF mouthwash has 225ppm F.

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Monday, 6 February 2012 8:23 AMSubject: Re: regarding flourides

Hi sajitha

Are these values different for different percentages?

Can u give me the source, actually from where i can stdy this?

anyways, thanks for ur answer.....

From: Sajithakumari Sivaprem <ssajithakumari@...>" " < > Sent: Sunday, 5 February 2012 11:17 PMSubject: Re: regarding flourides

hi kanika,

0.05{NaF} mouthwash contains 0.O23 percent F.=0.23 mg=230 ppm

sajitha

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Sunday, 5 February 2012 8:58 PMSubject: regarding flourides

Hi all

Can u help me finding the answer of this question

0.05% fluoride mouthwash contains how much ppm?

options are 225,250,900,1000

when i calculate it, it comes to be 500.

Any help would be appreciated.

[Guest guest]

Dear Areej frankly speaking I don't know about the calculations, but I read it in wiki that 0.05 NaF is 225ppm, so its not like that the options are wrong.. relax on this one... here is the reference - The most common fluoride compound used in mouth rinse is sodium fluoride. Over-the-counter solutions of 0.05% sodium fluoride (225 ppm fluoride) for daily rinsing are available for use. Fluoride at this concentration is not strong enough for people at high risk for cavities.[citation needed]http://en.wikipedia.org/wiki/Fluoride_therapy for calculation clarification- where are you Ahmeed !! plz explain it to us. From: Areej Abbas

<areej.aldura@...> " " < > Sent: Monday, 6 February 2012 10:21 PM Subject: Re: regarding flourides/Divi

bare with me Kanika now ; why and how 4.5 % got to do with the question .from the question I felt they wanted to know if we know about how to transfer or interpret % into ppm plus having no 500 in the options does not make it wrong cause so time the feedbacker unable to remember all the opitions were given at the exam.

need your clarification konika if you may .

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Monday, 6 February 2012, 21:30Subject: Re: regarding flourides/Divi

I was doing it in the same way but we have to remember

mouthwash contain neutral NaF= 4.5%

for 0.05% = 4.5\1000*0.05=.000225=225 ppm

this was told by ahmed.

thanks to him.

From: Areej Abbas <areej.aldura@...>" " < > Sent: Monday, 6 February 2012 9:19 PMSubject: Re: regarding flourides/Divi

0.05% means you have 0.05 parts per 100 parts. You want to know how many parts per million. So, you must multiply 0.05 by (1,000,000/100). The answer is 0.05 x 10,000, or 500 ppm.

Therefore:

Y(PPM) = Y(%) X 10000

as far as i know this is the right equation for any similar question .however I would like to know from you Divi and from all other colleague how got the answers what equation they rely on?

From: Divi Divi <divi_ore@...>" " < > Sent: Monday, 6 February 2012, 10:08Subject: Re: regarding flourides

0.05 % NaF mouthwash has 225ppm F.

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Monday, 6 February 2012 8:23 AMSubject: Re: regarding flourides

Hi sajitha

Are these values different for different percentages?

Can u give me the source, actually from where i can stdy this?

anyways, thanks for ur answer.....

From: Sajithakumari Sivaprem <ssajithakumari@...>" " < > Sent: Sunday, 5 February 2012 11:17 PMSubject: Re: regarding flourides

hi kanika,

0.05{NaF} mouthwash contains 0.O23 percent F.=0.23 mg=230 ppm

sajitha

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Sunday, 5 February 2012 8:58 PMSubject: regarding flourides

Hi all

Can u help me finding the answer of this question

0.05% fluoride mouthwash contains how much ppm?

options are 225,250,900,1000

when i calculate it, it comes to be 500.

Any help would be appreciated.

[Guest guest]

I am completely getting your point and as i have told u, this was the confusion with me as well, when i was solving this question and that is why i posted this question in the forum.but the equation which is 0.05% provides 225 ppm can not be ignored and so many time i came across with it.so because of this and moreover not having a option i choose this way of solving question better than doing 1ppm= .oooo1% From: Areej Abbas <areej.aldura@...> " " < > Sent: Monday, 6 February 2012 10:21 PM Subject: Re: regarding flourides/Divi

bare with me Kanika now ; why and how 4.5 % got to do with the question .from the question I felt they wanted to know if we know about how to transfer or interpret % into ppm plus having no 500 in the options does not make it wrong cause so time the feedbacker unable to remember all the opitions were given at the exam.

need your clarification konika if you may .

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Monday, 6 February 2012, 21:30Subject: Re: regarding flourides/Divi

I was doing it in the same way but we have to remember

mouthwash contain neutral NaF= 4.5%

for 0.05% = 4.5\1000*0.05=.000225=225 ppm

this was told by ahmed.

thanks to him.

From: Areej Abbas <areej.aldura@...>" " < > Sent: Monday, 6 February 2012 9:19 PMSubject: Re: regarding flourides/Divi

0.05% means you have 0.05 parts per 100 parts. You want to know how many parts per million. So, you must multiply 0.05 by (1,000,000/100). The answer is 0.05 x 10,000, or 500 ppm.

Therefore:

Y(PPM) = Y(%) X 10000

as far as i know this is the right equation for any similar question .however I would like to know from you Divi and from all other colleague how got the answers what equation they rely on?

From: Divi Divi <divi_ore@...>" " < > Sent: Monday, 6 February 2012, 10:08Subject: Re: regarding flourides

0.05 % NaF mouthwash has 225ppm F.

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Monday, 6 February 2012 8:23 AMSubject: Re: regarding flourides

Hi sajitha

Are these values different for different percentages?

Can u give me the source, actually from where i can stdy this?

anyways, thanks for ur answer.....

From: Sajithakumari Sivaprem <ssajithakumari@...>" " < > Sent: Sunday, 5 February 2012 11:17 PMSubject: Re: regarding flourides

hi kanika,

0.05{NaF} mouthwash contains 0.O23 percent F.=0.23 mg=230 ppm

sajitha

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Sunday, 5 February 2012 8:58 PMSubject: regarding flourides

Hi all

Can u help me finding the answer of this question

0.05% fluoride mouthwash contains how much ppm?

options are 225,250,900,1000

when i calculate it, it comes to be 500.

Any help would be appreciated.

[Guest guest]

Dear Areej,i have given the explanation. REGARDS From: Divi Divi <divi_ore@...> " " < > Sent: Monday, 6 February 2012

10:34 PM Subject: Re: regarding flourides/Divi

Dear Areej frankly speaking I don't know about the calculations, but I read it in wiki that 0.05 NaF is 225ppm, so its not like that the options are wrong.. relax on this one... here is the reference - The most common fluoride compound used in mouth rinse is sodium fluoride. Over-the-counter solutions of 0.05% sodium fluoride (225

ppm fluoride) for daily rinsing are available for use. Fluoride at this concentration is not strong enough for people at high risk for cavities.[citation needed]http://en.wikipedia.org/wiki/Fluoride_therapy for calculation clarification- where are you Ahmeed !! plz explain it to us. From: Areej Abbas

<areej.aldura@...> " " < > Sent: Monday, 6 February 2012 10:21 PM Subject: Re: regarding flourides/Divi

bare with me Kanika now ; why and how 4.5 % got to do with the question .from the question I felt they wanted to know if we know about how to transfer or interpret % into ppm plus having no 500 in the options does not make it wrong cause so time the feedbacker unable to remember all the opitions were given at the exam.

need your clarification konika if you may .

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Monday, 6 February 2012, 21:30Subject: Re: regarding flourides/Divi

I was doing it in the same way but we have to remember

mouthwash contain neutral NaF= 4.5%

for 0.05% = 4.5\1000*0.05=.000225=225 ppm

this was told by ahmed.

thanks to him.

From: Areej Abbas <areej.aldura@...>" " < > Sent: Monday, 6 February 2012 9:19 PMSubject: Re: regarding flourides/Divi

0.05% means you have 0.05 parts per 100 parts. You want to know how many parts per million. So, you must multiply 0.05 by (1,000,000/100). The answer is 0.05 x 10,000, or 500 ppm.

Therefore:

Y(PPM) = Y(%) X 10000

as far as i know this is the right equation for any similar question .however I would like to know from you Divi and from all other colleague how got the answers what equation they rely on?

From: Divi Divi <divi_ore@...>" " < > Sent: Monday, 6 February 2012, 10:08Subject: Re: regarding flourides

0.05 % NaF mouthwash has 225ppm F.

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Monday, 6 February 2012 8:23 AMSubject: Re: regarding flourides

Hi sajitha

Are these values different for different percentages?

Can u give me the source, actually from where i can stdy this?

anyways, thanks for ur answer.....

From: Sajithakumari Sivaprem <ssajithakumari@...>" " < > Sent: Sunday, 5 February 2012 11:17 PMSubject: Re: regarding flourides

hi kanika,

0.05{NaF} mouthwash contains 0.O23 percent F.=0.23 mg=230 ppm

sajitha

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Sunday, 5 February 2012 8:58 PMSubject: regarding flourides

Hi all

Can u help me finding the answer of this question

0.05% fluoride mouthwash contains how much ppm?

options are 225,250,900,1000

when i calculate it, it comes to be 500.

Any help would be appreciated.

[Guest guest]

and we all need to know that NaF wouthwashes comes in 2 concentrations 1)0.05% NaF which is 225ppm2) 0.2 % which is 990ppmThe sodium fluoride rinses are available as a 0.05 per cent daily rinse (225 ppm) or a 0.2 per cent weekly rinse (900 ppm). From: Areej Abbas <areej.aldura@...> " " < > Sent: Monday, 6 February 2012 10:21 PM Subject: Re: regarding flourides/Divi

bare with me Kanika now ; why and how 4.5 % got to do with the question .from the question I felt they wanted to know if we know about how to transfer or interpret % into ppm plus having no 500 in the options does not make it wrong cause so time the feedbacker unable to remember all the opitions were given at the exam.

need your clarification konika if you may .

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Monday, 6 February 2012, 21:30Subject: Re: regarding flourides/Divi

I was doing it in the same way but we have to remember

mouthwash contain neutral NaF= 4.5%

for 0.05% = 4.5\1000*0.05=.000225=225 ppm

this was told by ahmed.

thanks to him.

From: Areej Abbas <areej.aldura@...>" " < > Sent: Monday, 6 February 2012 9:19 PMSubject: Re: regarding flourides/Divi

0.05% means you have 0.05 parts per 100 parts. You want to know how many parts per million. So, you must multiply 0.05 by (1,000,000/100). The answer is 0.05 x 10,000, or 500 ppm.

Therefore:

Y(PPM) = Y(%) X 10000

as far as i know this is the right equation for any similar question .however I would like to know from you Divi and from all other colleague how got the answers what equation they rely on?

From: Divi Divi <divi_ore@...>" " < > Sent: Monday, 6 February 2012, 10:08Subject: Re: regarding flourides

0.05 % NaF mouthwash has 225ppm F.

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Monday, 6 February 2012 8:23 AMSubject: Re: regarding flourides

Hi sajitha

Are these values different for different percentages?

Can u give me the source, actually from where i can stdy this?

anyways, thanks for ur answer.....

From: Sajithakumari Sivaprem <ssajithakumari@...>" " < > Sent: Sunday, 5 February 2012 11:17 PMSubject: Re: regarding flourides

hi kanika,

0.05{NaF} mouthwash contains 0.O23 percent F.=0.23 mg=230 ppm

sajitha

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Sunday, 5 February 2012 8:58 PMSubject: regarding flourides

Hi all

Can u help me finding the answer of this question

0.05% fluoride mouthwash contains how much ppm?

options are 225,250,900,1000

when i calculate it, it comes to be 500.

Any help would be appreciated.

[Guest guest]

its a simple equation . for Naf you will always use 4.5% .. for acidulated Phosphate Fluoride -APF we will use 10% and for Stannous Flouride we use 2.4..% .!!and during the exam you can get asked for 20% mouthwash as well .. so knowing the equation is important then just memorizing the right answer! .. good luck!! From: Divi Divi <divi_ore@...> " " < > Sent: Monday, 6 February 2012, 23:34 Subject: Re: regarding flourides/Divi

Dear Areej frankly speaking I don't know about the calculations, but I read it in wiki that 0.05 NaF is 225ppm, so its not like that the options are wrong.. relax on this one... here is the reference - The most common fluoride compound used in mouth rinse is sodium fluoride. Over-the-counter solutions of 0.05% sodium fluoride (225 ppm

fluoride) for daily rinsing are available for use. Fluoride at this concentration is not strong enough for people at high risk for cavities.[citation needed]http://en.wikipedia.org/wiki/Fluoride_therapy for calculation clarification- where are you Ahmeed !! plz explain it to us. From: Areej Abbas

<areej.aldura@...> " " < > Sent: Monday, 6 February 2012 10:21 PM Subject: Re: regarding flourides/Divi

bare with me Kanika now ; why and how 4.5 % got to do with the question .from the question I felt they wanted to know if we know about how to transfer or interpret % into ppm plus having no 500 in the options does not make it wrong cause so time the feedbacker unable to remember all the opitions were given at the exam.

need your clarification konika if you may .

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Monday, 6 February 2012, 21:30Subject: Re: regarding flourides/Divi

I was doing it in the same way but we have to remember

mouthwash contain neutral NaF= 4.5%

for 0.05% = 4.5\1000*0.05=.000225=225 ppm

this was told by ahmed.

thanks to him.

From: Areej Abbas <areej.aldura@...>" " < > Sent: Monday, 6 February 2012 9:19 PMSubject: Re: regarding flourides/Divi

0.05% means you have 0.05 parts per 100 parts. You want to know how many parts per million. So, you must multiply 0.05 by (1,000,000/100). The answer is 0.05 x 10,000, or 500 ppm.

Therefore:

Y(PPM) = Y(%) X 10000

as far as i know this is the right equation for any similar question .however I would like to know from you Divi and from all other colleague how got the answers what equation they rely on?

From: Divi Divi <divi_ore@...>" " < > Sent: Monday, 6 February 2012, 10:08Subject: Re: regarding flourides

0.05 % NaF mouthwash has 225ppm F.

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Monday, 6 February 2012 8:23 AMSubject: Re: regarding flourides

Hi sajitha

Are these values different for different percentages?

Can u give me the source, actually from where i can stdy this?

anyways, thanks for ur answer.....

From: Sajithakumari Sivaprem <ssajithakumari@...>" " < > Sent: Sunday, 5 February 2012 11:17 PMSubject: Re: regarding flourides

hi kanika,

0.05{NaF} mouthwash contains 0.O23 percent F.=0.23 mg=230 ppm

sajitha

From: Kanika Kohli <kanika_sahil@...>" " < > Sent: Sunday, 5 February 2012 8:58 PMSubject: regarding flourides

Hi all

Can u help me finding the answer of this question

0.05% fluoride mouthwash contains how much ppm?

options are 225,250,900,1000

when i calculate it, it comes to be 500.

Any help would be appreciated.

[Guest guest]

Hi,

1000ppmF = 1mgF/ml so we need to know how many mg 'fluoride' is present in any

formulation to be able to convert it into parts per million.

Now 0.05% of 'Sodium Fluoride' contains only 0.023% fluoride. Which means

0.23mgF/ml hence 230ppm fluoride.

0.2%NaF contains 0.09%F = 0.90mg/ml = 900ppmF

Duraphat is 5% NaF, contains 2.26%F, F=22.6mg/ml =22600ppmF

APF gel contains 1.23%F, F=12.3mg/ml = 12300ppmF

2%NaF contains 0.92%F, F= 9.2mg/ml = 9200ppmF

8% SnF contains 1.95%f F= 19.5mg/ml = 19500ppmf

I know this sounds confusing but most formulations have other components apart

from fluoride. So you need to learn the % fluoride present in each formulation

to be able to calculate the ppmF.

I've provided the concentrations of some of the most commonly used fluoride

formulations. It should be sufficient for the exam. But please do check the past

questions for any other formulations that might have been asked and/or the

common fluorides used in u.k. Some of them are given in the pink book.

Hope this helps.

Regards,

Smriti

If such a question is asked in the exam, you need to know the

>

> Y(PPM) = Y(%) X 10000

> as far as i know this is the right equation for any similar question .however

I would like to know from you Divi and from all other colleague how got the

answers what equation they rely on?

>

>

> ________________________________

> From: Divi Divi <divi_ore@...>

> " " < >

> Sent: Monday, 6 February 2012, 10:08

> Subject: Re: regarding flourides

>

>

>  

> 0.05 % NaF mouthwash has 225ppm F. 

>

>

> ________________________________

> From: Kanika Kohli <kanika_sahil@...>

> " " < >

> Sent: Monday, 6 February 2012 8:23 AM

> Subject: Re: regarding flourides

>

>

>  

> Hi sajitha

>

> Are these values different for different percentages?

> Can u give me the source, actually from where i can stdy this?

>

> anyways, thanks for ur answer.....

>

>

> ________________________________

> From: Sajithakumari Sivaprem <ssajithakumari@...>

> " " < >

> Sent: Sunday, 5 February 2012 11:17 PM

> Subject: Re: regarding flourides

>

>

>  

> hi kanika, 

>                     0.05{NaF}  mouthwash contains 0.O23 percent

F.=0.23 mg=230 ppm

>                                                   

                                           

>                                                   

                                                   

sajitha

>

>

> ________________________________

> From: Kanika Kohli <kanika_sahil@...>

> " " < >

> Sent: Sunday, 5 February 2012 8:58 PM

> Subject: regarding flourides

>

>

>  

> Hi all

>

> Can u help me finding the answer of this question

> 0.05% fluoride mouthwash contains how much ppm?

> options are 225,250,900,1000

>

> when i calculate it, it comes to be 500.

>

> Any help would be appreciated.

>

>

>

>

>

>

>

>

>

> 0.05% means you have 0.05 parts per 100 parts. You want to know how many parts

per million. So, you must multiply 0.05 by (1,000,000/100). The answer is 0.05 x

10,000, or 500 ppm.

> Therefore:

>

[Guest guest]

Hi,

this is what i got online.Hope it helps

Fluoride conversion chart

APF (10)(%)(1000)

ppm

1.0%

10,000

1.23%

12,300

NaF (4.5)(%)(1000)

ppm

0.05%

225

0.20%

900

0.44%

1,980

1.0%

4,500

1.1%

4,950

2.0%

9,000

5.0%

22,500

SnF2 (2.4)(%)(1000)

ppm

0.40%

960

0.63%

1,512

From: doc_smriti <doc_smriti@...> Sent: Tuesday, February 7, 2012 6:02 AMSubject: Re: regarding flourides/Divi

Hi,1000ppmF = 1mgF/ml so we need to know how many mg 'fluoride' is present in any formulation to be able to convert it into parts per million. Now 0.05% of 'Sodium Fluoride' contains only 0.023% fluoride. Which means 0.23mgF/ml hence 230ppm fluoride.0.2%NaF contains 0.09%F = 0.90mg/ml = 900ppmFDuraphat is 5% NaF, contains 2.26%F, F=22.6mg/ml =22600ppmFAPF gel contains 1.23%F, F=12.3mg/ml = 12300ppmF2%NaF contains 0.92%F, F= 9.2mg/ml = 9200ppmF8% SnF contains 1.95%f F= 19.5mg/ml = 19500ppmfI know this sounds confusing but most formulations have other components apart from fluoride. So you need to learn the % fluoride present in each formulation to be able to calculate the ppmF.I've provided the concentrations of some of the most commonly used fluoride formulations. It should be sufficient for the exam. But please do check the past questions for any other formulations that might have been asked and/or the

common fluorides used in u.k. Some of them are given in the pink book.Hope this helps.Regards,SmritiIf such a question is asked in the exam, you need to know the >> Y(PPM) = Y(%) X 10000> as far as i know this is the right equation for any similar question .however I would like to know from you Divi and from all other colleague how got the answers what equation they rely on?> > > ________________________________> From: Divi Divi <divi_ore@...>> " " < > > Sent: Monday, 6 February 2012, 10:08> Subject: Re: regarding flourides> > >  > 0.05 % NaF mouthwash has 225ppm F. > > > ________________________________> From: Kanika Kohli <kanika_sahil@...>> " " < > > Sent: Monday, 6 February 2012 8:23 AM> Subject: Re: regarding flourides> > >  > Hi

sajitha> > Are these values different for different percentages?> Can u give me the source, actually from where i can stdy this?> > anyways, thanks for ur answer.....> > > ________________________________> From: Sajithakumari Sivaprem <ssajithakumari@...>> " " < > > Sent: Sunday, 5 February 2012 11:17 PM> Subject: Re: regarding flourides> > >  > hi kanika, >            0.05{NaF}

 mouthwash contains 0.O23 percent F.=0.23 mg=230 ppm>                                                 >                                                   Â

 sajitha> > > ________________________________> From: Kanika Kohli <kanika_sahil@...>> " " < > > Sent: Sunday, 5 February 2012 8:58 PM> Subject: regarding flourides> > >  > Hi all> > Can u help me finding the answer of this question> 0.05% fluoride mouthwash contains how much ppm?> options are 225,250,900,1000> > when i calculate it, it comes to be 500.> > Any help would be appreciated.> > > > > >

> > > > 0.05% means you have 0.05 parts per 100 parts. You want to know how many parts per million. So, you must multiply 0.05 by (1,000,000/100). The answer is 0.05 x 10,000, or 500 ppm.> Therefore:>

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Thanks alot smriti for making at least my life a bit easier by sharing this info.thanks again. From: doc_smriti <doc_smriti@...> Sent: Tuesday, 7 February 2012 6:02 AM Subject: Re: regarding

flourides/Divi

Hi,

1000ppmF = 1mgF/ml so we need to know how many mg 'fluoride' is present in any formulation to be able to convert it into parts per million.

Now 0.05% of 'Sodium Fluoride' contains only 0.023% fluoride. Which means 0.23mgF/ml hence 230ppm fluoride.

0.2%NaF contains 0.09%F = 0.90mg/ml = 900ppmF

Duraphat is 5% NaF, contains 2.26%F, F=22.6mg/ml =22600ppmF

APF gel contains 1.23%F, F=12.3mg/ml = 12300ppmF

2%NaF contains 0.92%F, F= 9.2mg/ml = 9200ppmF

8% SnF contains 1.95%f F= 19.5mg/ml = 19500ppmf

I know this sounds confusing but most formulations have other components apart from fluoride. So you need to learn the % fluoride present in each formulation to be able to calculate the ppmF.

I've provided the concentrations of some of the most commonly used fluoride formulations. It should be sufficient for the exam. But please do check the past questions for any other formulations that might have been asked and/or the common fluorides used in u.k. Some of them are given in the pink book.

Hope this helps.

Regards,

Smriti

If such a question is asked in the exam, you need to know the

>

> Y(PPM) = Y(%) X 10000

> as far as i know this is the right equation for any similar question .however I would like to know from you Divi and from all other colleague how got the answers what equation they rely on?

>

>

> ________________________________

> From: Divi Divi <divi_ore@...>

> " " < >

> Sent: Monday, 6 February 2012, 10:08

> Subject: Re: regarding flourides

>

>

> Â

> 0.05 % NaF mouthwash has 225ppm F.Â

>

>

> ________________________________

> From: Kanika Kohli <kanika_sahil@...>

> " " < >

> Sent: Monday, 6 February 2012 8:23 AM

> Subject: Re: regarding flourides

>

>

> Â

> Hi sajitha

>

> Are these values different for different percentages?

> Can u give me the source, actually from where i can stdy this?

>

> anyways, thanks for ur answer.....

>

>

> ________________________________

> From: Sajithakumari Sivaprem <ssajithakumari@...>

> " " < >

> Sent: Sunday, 5 February 2012 11:17 PM

> Subject: Re: regarding flourides

>

>

> Â

> hi kanika,Â

> Â Â Â Â Â Â Â Â Â Â Â 0.05{NaF} Â mouthwash contains 0.O23 percent F.=0.23 mg=230 ppm

> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â

> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â sajitha

>

>

> ________________________________

> From: Kanika Kohli <kanika_sahil@...>

> " " < >

> Sent: Sunday, 5 February 2012 8:58 PM

> Subject: regarding flourides

>

>

> Â

> Hi all

>

> Can u help me finding the answer of this question

> 0.05% fluoride mouthwash contains how much ppm?

> options are 225,250,900,1000

>

> when i calculate it, it comes to be 500.

>

> Any help would be appreciated.

>

>

>

>

>

>

>

>

>

> 0.05% means you have 0.05 parts per 100 parts. You want to know how many parts per million. So, you must multiply 0.05 by (1,000,000/100). The answer is 0.05 x 10,000, or 500 ppm.

> Therefore:

>