Recommended Products
material
optical glass vial
technique(s)
photometry: suitable
compatibility
for use with Spectroquant® Move 100
for use with Spectroquant® Nova 60 A
for use with Spectroquant® Prove 100
for use with Spectroquant® Prove 300
for use with Spectroquant® Prove 600
detection method
photometric
storage temp.
2-30°C
General description
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Certificates of Analysis (COA)
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Protocols
Using the Spectroquant® photometric system, we outline a photometric analysis of calcium levels in beer.
Method: Spectrophotometric Color Determination at 420 nm Zero adjustment For each measurement series, a zero adjustment is required. It is recommended to use the same cell for zero adjustment and for sample measurement. The zeroing procedure for the measurement series is automatically prompted by the instrument after entering the %RDS value.
Photometric determination using the Griess method subsequent to extraction
Method: Photometric determination with 2,2'-dinitro-5,5'-dithiodibenzoic acid (Ellman's reagent)
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