Neutral density glass filters

Product / Spectroscopy

Schott NG type glass filters, from which a wide range of transmission and absorbance can be produced, have been available for over forty years. All Starna neutral density filters are manufactured and certified at 440, 546.1, 590 and 635 nm; absorbance references are calibrated at a bandwidth of 1 nm.

Product group: Certified reference materials (CRM)
Brand: Starna Scientific

Manufacturer website

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

Order codes and options

20 codes

Neutral density glass filters order codes and properties
Code	Transmittance	Absorbance	Description
RM-9N	%92	0.04	no value
RM-8N	79.4%	0.10	no value
RM-7N	%73	0.14	no value
RM-6N	%60	0.22	no value
RM-5D	56.5%	0.25	no value
RM-5N	%50	0.30	no value
RM-4N	%40	0.40	no value
RM-3N	%30	0.52	no value
RM-2D	%25	0.60	no value
RM-2N	%20	0.70	no value
RM-1N	%10	1.00	no value
RM-N6	%6	1.22	no value
RM-N3	%3	1.52	no value
RM-1D	1.5%	1.82	no value
RM-N1	%1	2.00	no value
RM-D3	0.3%	2.52	no value
RM-D1	0.1%	3.00	no value
RM-H6	0.06%	3.22	no value
RM-H3	0.03%	3.52	no value
RM-1N3N5DHG	no value	no value	Neutral density filters 1.00, 0.50 and 0.25 A (10%, 30% and 52% T) + empty holder

Technical specifications

Neutral density glass filters technical specifications
Number of variants	20

Source: starnacells.com (opens in a new tab) · Starna Certified Reference Materials for Spectroscopy 2021, s.18. Values come from the manufacturer and are confirmed at the quotation stage.