Semi-micro cells with stopper (Type 29 and 29B)

Product / Spectroscopy

Similar in all respects to the Type 9 semi-micro cells, except that they are supplied with a PTFE stopper (or stoppers) fitting a ground joint to reduce evaporation of volatile samples. The external height is 48 mm plus the stopper. Unless specifically designed otherwise, all cells are assembled by fully fused construction without intermediate adhesives and can generally be used with pressure differentials of up to three atmospheres. Standard window thickness is 1.25 mm and the standard path length tolerance is ±0.01 mm (catalog general specifications).

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

13 codes

Semi-micro cells with stopper (Type 29 and 29B) order codes and properties
Code	Window material	Path length	Nominal volume
29-SOG-10	Special optical glass (320-2500 nm)	10 mm	1.4 mL
29-Q-5	Spectrosil quartz (far UV) (170-2700 nm)	5 mm	0.7 mL
29-Q-10	Spectrosil quartz (far UV) (170-2700 nm)	10 mm	1.4 mL
29/9-Q-10	Spectrosil quartz (far UV) (170-2700 nm)	10 mm	1.16 mL
29-Q-20	Spectrosil quartz (far UV) (170-2700 nm)	20 mm	2.8 mL
29-Q-40	Spectrosil quartz (far UV) (170-2700 nm)	40 mm	5.6 mL
29-Q-50	Spectrosil quartz (far UV) (170-2700 nm)	50 mm	7 mL
29B-Q-5	Spectrosil quartz (far UV) (170-2700 nm)	5 mm	0.7 mL
29B-Q-10	Spectrosil quartz (far UV) (170-2700 nm)	10 mm	1.4 mL
29B9-Q-10	Spectrosil quartz (far UV) (170-2700 nm)	10 mm	1.16 mL
29B-Q-20	Spectrosil quartz (far UV) (170-2700 nm)	20 mm	2.8 mL
29B-Q-40	Spectrosil quartz (far UV) (170-2700 nm)	40 mm	5.6 mL
29B-Q-50	Spectrosil quartz (far UV) (170-2700 nm)	50 mm	7 mL

Technical specifications

Semi-micro cells with stopper (Type 29 and 29B) technical specifications
Window materials	Special optical glass, Spectrosil quartz
Path length range (mm)	5 - 50 mm
Nominal volume range (mL)	0.7 - 7
Number of variants	13

Source: starnacells.com (opens in a new tab) · Starna Cells 2026 Catalog, p. 7 (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.