Cylindrical cells, short path length (Type 31 and 31B)

Product / Spectroscopy

The Type 31 range has path lengths of 0.01 mm to 5 mm with a 15 mm sample compartment aperture. The Type 31B range has a 13 mm aperture, and its structure allows lower volume. When filling cylindrical cells care must be taken to avoid damaging the windows; Type 31B tubulations are 7 mm OD x 5 mm ID.

Product group: UV/VIS and fluorometer cells
Brand: Starna Scientific

Manufacturer website

Source: manufacturer website (opens in a new tab) · Image: manufacturer website

Order codes and options

22 codes

Cylindrical cells, short path length (Type 31 and 31B) order codes and properties
Code	Window material	Path length	Nominal volume
31-Q-0.01	Spectrosil quartz (far UV) (170-2700 nm)	0.01 mm	2.15 mL
31-Q-0.1	Spectrosil quartz (far UV) (170-2700 nm)	0.10 mm	2.15 mL
31-Q-0.2	Spectrosil quartz (far UV) (170-2700 nm)	0.20 mm	2.18 mL
31-Q-0.5	Spectrosil quartz (far UV) (170-2700 nm)	0.50 mm	2.22 mL
31-Q-1	Spectrosil quartz (far UV) (170-2700 nm)	1 mm	2.31 mL
31-Q-2	Spectrosil quartz (far UV) (170-2700 nm)	2 mm	2.49 mL
31-Q-5	Spectrosil quartz (far UV) (170-2700 nm)	5 mm	3.02 mL
31-I-0.01	Infrasil quartz (near IR) (220-3800 nm)	0.01 mm	2.15 mL
31-I-0.1	Infrasil quartz (near IR) (220-3800 nm)	0.10 mm	2.15 mL
31-I-0.2	Infrasil quartz (near IR) (220-3800 nm)	0.20 mm	2.18 mL
31-I-0.5	Infrasil quartz (near IR) (220-3800 nm)	0.50 mm	2.22 mL
31-I-1	Infrasil quartz (near IR) (220-3800 nm)	1 mm	2.31 mL
31-I-2	Infrasil quartz (near IR) (220-3800 nm)	2 mm	2.49 mL
31-I-5	Infrasil quartz (near IR) (220-3800 nm)	5 mm	3.02 mL
31B-Q-0.01	Spectrosil quartz (far UV) (170-2700 nm)	0.01 mm	0.14 mL
31B-Q-0.05	Spectrosil quartz (far UV) (170-2700 nm)	0.05 mm	0.151 mL
31B-Q-0.1	Spectrosil quartz (far UV) (170-2700 nm)	0.1 mm	0.165 mL
31B-Q-0.2	Spectrosil quartz (far UV) (170-2700 nm)	0.2 mm	0.194 mL
31B-Q-0.5	Spectrosil quartz (far UV) (170-2700 nm)	0.5 mm	0.278 mL
31B-Q-1	Spectrosil quartz (far UV) (170-2700 nm)	1 mm	0.42 mL
31B-Q-2	Spectrosil quartz (far UV) (170-2700 nm)	2 mm	0.703 mL
31B-Q-5	Spectrosil quartz (far UV) (170-2700 nm)	5 mm	1.552 mL

Technical specifications

Cylindrical cells, short path length (Type 31 and 31B) technical specifications
Window materials	Spectrosil quartz, Infrasil quartz
Path length range (mm)	0.01 - 5 mm
Nominal volume range (mL)	0.14 - 3.02
Number of variants	22

Source: starnacells.com (opens in a new tab) · Starna Cells 2026 Catalog, pp. 22-23 (dimension table) · starnacells.com (opens in a new tab) · starnacells.com product type page. Values come from the manufacturer and are confirmed at the quotation stage.