||Part Number, NIST Traceable|
|Quinine Sulfate Reference (1 concentration 1.0 mg/l, without blank)||RM-QS|
|Quinine Sulfate Reference (1 concentration 1.0 mg/l & blank)||RM-QS00|
|Quinine Sulfate Reference (2 concentrations, & blank)||RM-2QS00|
Description & NIST Traceability
||Solution of quinine sulfate in 0.105 mol/L perchloric acid. The reference material is permanently sealed by heat fusion in quartz fluorometer cells, NIST Traceable complete with UKAS ISO/IEC 17025 accredited certificate of calibration.|
|Primary Usage||Calibration and evaluation of methods used on a fluorescence spectrophotometer.|
|Usable Range||375 nm to 675 nm|
|Physical Configuration||Far UV quartz fluorescence cell that has been permanently sealed by heat fusion. The reference is also available with a blank if required.|
NIST SRM 936a is supplied as a crystalline material and is made into a solution as described in the Certificate of Analysis supplied with NIST SRM 936a. Starna then fills a high quality far UV quartz fluorometer cell with the SRM solution and permanently seals the cell by heat fusion alone. The reference is designed for multiple use over time and for inter-instrument comparisons. Quinine sulfate references can also be supplied with a perchloric acid blank.
Where instrument linearity needs to be established, sets with different concentrations of quinine sulfate and a blank are available in the following concentrations, 0.25, 0.5, 0.75 & 1.0 mg/l.
The Starna reference set is supplied with a Certificate of Validation by our calibration laboratory which is accredited by UKAS to ISO 9001, ISO/IEC 17025, and ISO Guide 34. The certificate is valid for a period of two years.
Suggestions for Use:
Record the emission spectrum of the quinine sulfate reference using an excitation wavelength of 347.5 nm and use the results to calculate the correction factor for your instrument at the wavelength of interest by using the formula and reference values given in the calibration certificate. To evaluate instrument linearity, plot a graph of concentration against emission at 450 nm for each quinine sulfate concentration.