Data Category diffrn
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General 
- Category name
- diffrn
- Required in PDB entries
- no
- Category group membership
- diffrn_group
- Used in current PDB entries
- Yes, in about 85.4 % of entries
Category Relationship Diagrams 
View full category relationship diagram including all dictionary data categories
View abbreviated category relationship diagram including only those categories used in current PDB entries.
Category Description
Data items in the DIFFRN category record details about the
diffraction data and their measurement.
Category Example1
_diffrn.id 'Set1'
_diffrn.ambient_temp 293.0
_diffrn.ambient_environment
; Mother liquor from the reservoir of the vapor diffusion
experiment, mounted in room air
;
_diffrn.crystal_support
; 0.7 mm glass capillary, sealed with dental wax
;
_diffrn.crystal_treatment
; Equilibrated in rotating anode radiation enclosure for
18 hours prior to beginning of data collection
;
Category Example2
_diffrn.id 'd1'
_diffrn.details
; \q scan width (1.0 + 0.14tan\q)\%, \q scan rate 1.2\% per
min. Background counts for 5 sec on each side every scan.
;
_diffrn.ambient_temp 293
Key Data Items 
Category Data Items
- _diffrn.id
- _diffrn.ambient_environment
- _diffrn.ambient_pressure
- _diffrn.ambient_pressure_esd
- _diffrn.ambient_pressure_gt
- _diffrn.ambient_pressure_lt
- _diffrn.ambient_temp
- _diffrn.ambient_temp_details
- _diffrn.ambient_temp_esd
- _diffrn.ambient_temp_gt
- _diffrn.ambient_temp_lt
- _diffrn.crystal_id
- _diffrn.crystal_support
- _diffrn.crystal_treatment
- _diffrn.details