When preparing a new procedure or designing a new experiment …

• Ben evaluates the types and

quantities of waste products

• uses the smallest possible

amount of water required

• and considers possible

methods to reduce or

eliminate liquid waste.

To maintain its quality for a

longer period of time,

• they do not share it with

other laboratories /

schools

• they also avoid filling it

to it’s recommended

capacity before using it.

This is the lab’s autoclave unit.

This is the lab’s water

aspirators.

It’s an old model which

consumes approximately 22

litres/minute, when in use.

It’s around 8 years old and they don’t like overloading it so

they run it when it’s half full.

This is their dishwasher.

This is their bench-top

return dish, where they

discharge chilled water.

Using this dedicated return point

ensures that chilled water goes

back into the system’s return line

for re-use.

They do not discharge cooling

water in the sink anymore.

This is their evaporative cooler

They pass by this site

every morning and the

wet patch next to it

seems to get bigger each

week.

They have ablution basins…

with special hands-free tap ware,

which operate at 4L/min.

Their old installations have also

been retrofitted with in-line

devices restricting flow to 4L/min

or restricting duration of flow

using timed flow taps.

The lab use the building’s

primary closed circuit chilled

water loop to provide this

service.

Sometimes, to provide apparatus cooling…