1. Basic Shapes for Use in PDD
PDD: Training
Basic Shapes for Use in PDD 10
TASK
cool
Gas IN
Aqueous IN
Solvent IN
Solid IN
heat
Aqueous
Fed batch, i.e.
Extended or slug addition
Solvent
Solid
Gas
increasing
decreasing
constant
vapour
solid
aqueous liquid
Organic liquid
© Britest 2006

2. Some Standard Boxes PDD: Training © Britest 200610
TASK 10
TASK 10
TASK 10
TASK
Vapour generation – e.g.
By heating or reaction
Two phase mixing – e.g.
Reaction or LL extraction
Solid changing – e.g. Clay or carbon
treatment removing impurities
Solid generation – e.g.
Precipitation or crystallisation 10
TASK 10
TASK 10
TASK 10
TASK
Vapour removal – e.g.
By cooling
Solid removal – e.g.
By dissolution/ reaction 10
TASK 10
TASK 10
TASK 10
TASK
Constant solid – e.g.
Filter media or aid that
Is essential unchanged.
Solid addition that generates
New solid e.g. by precipitation
Slow addition of solid that
Gradually all dissolves/ reacts
© Britest 2006