Tesco value thin bleach - what concentration please?

[MacDuck]

Hello All

I have a bottle of Tesco Value Thin bleach. Says it contains LESS THAN 5% chlorine - could be 0.2% then!!! anyway, I am sanatising a bucket, but can barely smell the chlorine, and certainly cannot taste it. How much should I add? in teaspoons please.

Thanks

[ColinKeb]

I put in about an inch then top up with water to the top , bu tsome might say thats a bit strong , i think it should be about 5-10%

[MacDuck]

an inch!!! wow - that sounds like a lot. I had about 5% of that.

I assume then that you can quite clearly smell it?

[Buzz]

some might say thats a bit strong

I would.

I use Asda thin bleach (also less than 5%) chlorine and use half a cup in 5 gallons. You can smell the chlorine but not once it's been rinsed out afterwards. I think 1/2 cup equals about 125ml, so not much.

[MacDuck]

Yes, I have just gone for 125-150 ml for a 5 gallon (probably realy 6 gallon) bucket... and my king keg.

I have read posts about the ph being important, and in adding too much bleach you could actually make it LESS effective due to the raised ph. so maybe less is more!?

[Graham]

Hello All

I have a bottle of Tesco Value Thin bleach. Says it contains LESS THAN 5% chlorine - could be 0.2% then!!! anyway, I am sanatising a bucket, but can barely smell the chlorine, and certainly cannot taste it. How much should I add? in teaspoons please.

Thanks

Value bleaches are usually around a third of the strength of "brand" bleaches. 1.5% of available chlorine rather than 4.5%, (this is the case with Morrisons "Value" bleach) so you need to multiply the volume by 3 compared to standard bleach.

200 ppm of available chlorine, more than enough to disinfect a bucket requires about 15 milliltres of 1.5% bleach per litre.

[MacDuck]

200 ppm of available chlorine, more than enough to disinfect a bucket requires about 15 milliltres of 1.5% bleach per litre.

So Graham - what you are saying is that I need about 375 ml bleach for 25 l?

I used about 125 so hope I am OK...! although soaked for hours rather than 20 min.

[Graham]

200 ppm of available chlorine, more than enough to disinfect a bucket requires about 15 milliltres of 1.5% bleach per litre.

So Graham - what you are saying is that I need about 375 ml bleach for 25 l?

I used about 125 so hope I am OK...! although soaked for hours rather than 20 min.

Yes, that'll be fine. For disinfecting it really is powerful stuff.

Bear in mind that I have no real idea of how much available chlorine is in Tesco "value" bleach. I know that Morrison's "value" has 1.8% (Cos I asked them), so 1.5% is a good figure to use for calculation. Domestos has 4.9% (cos it says so on the bottle) so 4.5% is a good figure to use (It deteriorates over time).

I am assuming that Tesco "value" will be the same as Morrison's "value". I doubt if it will be any greater!

You don't really need 25 litres to sterilise a bucket. A couple of litres, a pair of rubber gloves, and a sponge should do the trick.

Don't leave glass for "hours" in a strong solution of bleach though, the caustic soda within attacks glass given enough time. Always rinse bleach from glass after disinfecting.