Physical properties
Here you will find certified reference materials that serve as standards for analyzing the physical properties of substances. You will find standards for measuring refractive index, density, viscosity, electrical conductivity, melting point, etc. If you cannot find what you are looking for, please do not hesitate to contact us.
![](https://www.analytika.net/images/thumbnails/80/80/detailed/15/NIST_logo_ttdw-i6.png)
Carbon Dioxide in Nitrogen (Nominal Amount-of-Substance Fraction 7 % mol/mol)
SRM1674b
Product Detail
![](https://www.analytika.net/images/thumbnails/80/80/detailed/15/NIST_logo_fqft-kg.png)
Carbon Monoxide in Nitrogen (Nominal Amount-of-Substance Fraction 10 µmol/mol)
SRM1677c
Product Detail
![](https://www.analytika.net/images/thumbnails/80/80/detailed/15/NIST_logo_r31a-0l.png)
Carbon Monoxide in Nitrogen (Nominal Amount-of-Substance Fraction 50 µmol/mol)
SRM1678c
Product Detail
![](https://www.analytika.net/images/thumbnails/80/80/detailed/15/NIST_logo_17fk-u2.png)
Carbon Monoxide in Nitrogen (Nominal Amount-of-Substance Fraction 500 µmol/mol)
SRM1680b
Product Detail
![](https://www.analytika.net/images/thumbnails/80/80/detailed/15/NIST_logo_ws05-m6.png)
Carbon Monoxide in Nitrogen (Nominal Amount-of-Substance Fraction 1000 µmol/mol)
SRM1681b
Product Detail
![](https://www.analytika.net/images/thumbnails/80/80/detailed/15/NIST_logo_2j93-kn.png)
Nitric Oxide in Nitrogen (Nominal Amount-of-Substance Fraction 500 µmol/mol)
SRM1686b
Product Detail
![](https://www.analytika.net/images/thumbnails/80/80/detailed/15/NIST_logo_wjc2-ar.png)
Nitric Oxide in Nitrogen (Nominal Amount-of-Substance Fraction 1000 µmol/mol)
SRM1687b
Product Detail
![](https://www.analytika.net/images/thumbnails/80/80/detailed/15/NIST_logo_bon0-lj.png)
Polystyrene Spheres (Nominal Diameter 1 µm), 5 ml
SRM1690
Product Detail
![](https://www.analytika.net/images/thumbnails/80/80/detailed/15/NIST_logo_9pbp-wl.png)
Polystyrene Spheres (Nominal Diameter 0.3 µm), 5 ml
SRM1691
Product Detail
![](https://www.analytika.net/images/thumbnails/80/80/detailed/15/NIST_logo_bujb-vd.png)
Sulfur Dioxide in Nitrogen (Nominal Amount-of-Substance Fraction 50 µmol/mol)
SRM1693a
Product Detail
![](https://www.analytika.net/images/thumbnails/80/80/detailed/15/NIST_logo_8fx0-dt.png)
Sulfur Dioxide in Nitrogen (Nominal Amount-of-Substance Fraction 3500 µmol/mol)
SRM1696a
Product Detail
![](https://www.analytika.net/images/thumbnails/80/80/detailed/15/NIST_logo_7waf-2d.png)
Nitrous Oxide in Air (Nominal Amount-of-Substance Fraction 1 µmol/mol)
SRM1718
Product Detail