Toluene/water, traceable to SRM from NIST and PTB n (20°C)=1,4969 Certipur®
アプリケーション
Refractive index standard kit 2 for use as a calibration standard for refractometers.
特徴および利点
Five 8ml ampoules of the standard solution and five 8ml ampoules with water are included in each kit
Traceable to recognized national standards, and to units of measurement recognized at the National Institute Standards and Technology (NIST) and Physical Technical Institute (PTB)
Solutions that are stable, ready to use, and have long minimum shelf lives
A certificate of analysis (CoA) is included with every standard kit
法的情報
CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany
1) What is the unit of measurement used for these standards (Brix units, Specific Gravity etc)?
2) What is the range that the calibration kit covers?
3) Once reconstituted, how long are these materials good for?
1 回答
Technical Support
·2年前
The method of analysis is the refractive index which is measured by an Abbé-type refractometer at a wavelength of 589,3nm at 20°C and 25°C. Stable solutions have a minimum shelf life of 3 years, this kit is supplied ready to use.
![Refractive index standard traceable to NIST, traceable to PTB, [α]/D 10°, Brix CERTIPUR®](/deepweb/assets/sigmaaldrich/product/images/137/112/c7ee9f1e-5b1a-475f-9853-3595c8466217/640/c7ee9f1e-5b1a-475f-9853-3595c8466217.jpg)
