Short answer
Internal and external bottle handling should be compared according to daily care, cage access, washing route, handling preference, room constraints, and the cage family being selected. The final bottle arrangement is confirmed during quotation review.
Daily care comparison
Review how operators access bottles, observe cages, replace bottles, and move cages during routine animal care work.
Washroom and support areas
Map the handoff between housing rooms, bottle preparation, cage washing, and support equipment so the IVC request includes the right interfaces.