A circular pool is used for spectrophotometers with more circulating beams. Starna offers several different configurations: optical path length ranging from 0.01-100mm.

Standard circular pool, Type 31

Short path two port micro cell, Type 31B

Short path circular pool with filling tube, Type 37

Circular pool with quartz heat-resistant glass graded sealed tube, Type 37GS

Medium and long path circular pool

Medium optical path, circular pool with PTFE plug, Type 32

Threaded lid, anaerobic circular tank, Type 32GL14, 34GL14

Long path circular pool, Type 34

Long diameter circular pool, Type 35

Constant temperature circular pool, Type 65