The transmission of the filter is determined by the thickness of a metallic coating deposited on a quartz plate; the metallic surface is overlaid by an optically bonded cover plate for protection from oxidation and physical degradation. The filters are mounted stress-free in black-anodised aluminium holders. The spectrum is essentially flat from 250 to 850 nm; absorbance and transmittance are certified at 250, 280, 340, 360, 400, 465, 500, 546.1, 590 and 635 nm. Suitable for spectrophotometers with bandwidths not exceeding 10 nm.
Metal-on-quartz filters order codes and properties
Code
Nominal
Description
Quote list
RM-9Q
%T 90 (0.04 A)
–no value
RM-5Q
%T 50 (0.3 A)
–no value
RM-3Q
%T 30 (0.5 A)
–no value
RM-1Q
%T 10 (1.0 A)
–no value
RM-Q3
%T 3 (1.5 A)
–no value
RM-Q1
%T 1 (2.0 A)
–no value
RM-1Q3Q9Q
–no value
Set: 10, 30 and 90 %T (NIST SRM 2031a)
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Technical specifications
Metal-on-quartz filters technical specifications
Number of variants
7
Source: starnacells.com (opens in a new tab) · Starna Certified Reference Materials for Spectroscopy 2021, s.8. Values come from the manufacturer and are confirmed at the quotation stage.
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Product / Spectroscopy
