Page 168 - Applied Pharmacognosy

Types of Chemical markers

Climatic Zones

• The concept of dividing the target markets into
five climatic zones (CZ) (according to recent WHO
recommendations) is based on defining the
prevalent annual climatic conditions.

• The following table illustrates the five CZ,
definition of each, and the recommended long-
term testing conditions:

CZ Definition Long-term testing conditions
I Temperate climate 21oC / 45%RH
II Subtropical and 25oC /60% RH

Mediterranean climate

III Hot and dry climate 30oC /35% RH
IVA Hot and humid climate 30oC /65% RH
IVB Hot and very humid climate 30oC /75% RH