1. DIY Calibration Of Containers
Materials-
A bottle ( not marked)
Masking tape
A bucket of water
100 mls or 200 ml cups
A litre or 500 ml jug
Pencil
Permanent marker
Paper towel
Method-
1. Get an unmarked bottle and put
the masking tape on top on one
side to the bottom on the same
side
2. With a litre or 500 ml jug,
( marked) fill it up with the
bucket of water and make sure
it is precise to what
measurement you want
3. Pour the water into the bottle
into the 100 ml or 200 ml cup
and make sure it is exactly
right
4. If it is, pour it into the bottle
and mark lightly with a pencil
pour it back to the 100 ml or
200 ml to double check it’ s
right. If it is pour into the
bottle and mark with a
permanent mark and add the mls
5. Keep on going and if it is more
than 200 mls, use the litre jug.
With the paper towel, wipe the
masking tape just incase it fall
off. Also wipe the work spot
that bottles been on.
Now there should be a marked
bottle or container with water
in side.
TIPS
Mark the bottle skip counting not 100,
100, 100 do 100, 200, 300.
When it is finished pour the water to
the plants.

2. By Saskia Junge