Buret

Burets are used to titrate liquids. A buret is filled with a specific volume of a liquid, and placed beneath it is a container such as an Erlenmeyer flask. By opening the valve on the buret, the liquid in the container will then be titrated. High quality burets have a venting mechanism with which they can be very easily refilled with the exact volume for which the buret is calibrated.

Ticktock.

Recorded Voice Tick, tick, tick.

Rumptytumty tiddleleeum Hi, diteyohtoh

(c) Establishment of a register for DDT and a format for notifications of use

The efficacy of DDT and its alternatives is important information for deciding the actual need for DDT for disease vector control in any local area.

Set here the raindrops' size.

An alternative to DDT may be broadly defined in two ways.

Your stomach? Yeah, my stomach's bad, too.

(i) DDT

Ticktock. Ticktock.

Pige? Pige?

We are not defined by our central properties, by the bits that make us up.

It's ticking like a bomb.

The time passed,

Couldn't you use DDT?

Interactive tool to simulate acido basic titrations

I'll make sure of that, sir. They won't get a drop.

According to the DDT register, three countries have notified use of DDT in disease vector control and one country notified the intention to use DDT if necessary.

3.4 Current Management of DDT

The first step in reducing current reliance on DDT is to improve the capacity of local malaria vector control programmes to determine where and when DDT is needed and how much of it is needed.

And you put a drop, in this case, of urine at the bottom.

If you put one drop, one drop of something, in that water, it'll change it forever.

Drop by drop, the water can conglomerate into a lake.

One tear for you. One for me.

But DDT sprayed on local homes, there's nothing better to eliminate malaria, besides insect DDT impregnated mosquito nets.

Two types of resistance to DDT are generally recognized (i) specific resistance developed directly in response to the use of DDT, and (ii) cross resistance (non specific resistance) as a result of the development of resistance to other insecticides such as pyrethroids.

Okay, we could talk about Rachel Carson and DDT, but we know it wasn't good for you and me.

Resistance to DDT is also widespread.

Evaluation and reporting mechanisms relating to DDT

RainDrop

Raindrops...

Raindrops

Lady!

Pige?

Pigeon?

Is that a fact?

Ticking

Ticking Continues

Two main opportunities exist through which current reliance on DDT may be reduced in a sustainable manner, where DDT is currently used for indoor residual spray

A dropping funnel can be used to drop precise amounts of fluid. The dropping speed can be controlled with a valve.

It will be necessary for countries that are currently using DDT to continue such use until locally appropriate and cost effective alternatives are available for sustainable transition away from DDT. There is an immediate need to improve the capacity of national malaria vector control programmes to determine where and when DDT is needed and how much of it is needed.

3.2 Trends in the use of DDT for Disease Vector Control