CAIQ Test

Vitamin C (Ascorbic acid)

Price of the test:
Please enquire our customer service at sample.receipt@caiqtest.co.nz

Acceptable Matrices:
Our accreditation covers: milk, milk powders, infant formula

Limit of Detection:
Any concentration greater than 5 mg/100 g is detectable.

Sample Size Requirements:
50 grams of sample is needed.

Equipment:
Fluorescent spectrophotometer

Reportable Units:
mg/100 g

Turn Around Time:
7 Business Days

Is Urgent Service Available?
No (Enquire our customer service for special requirements at sample.receipt@caiqtest.co.nz)

Method Reference:
GB 5009.86-2016

Method Description:
Testing reports values for vitamin C (ascorbic acid). Vitamin C is oxidized to dehydroascorbic acid by activated charcoal. Then dehydroascorbic acid reacts with o-phenylenediamine to form a fluorescent product. The fluorescence intensity is measured at excitation and emission of 350 nm and 430 nm by fluorescent spectrophotometer. The content of vitamin C can be determined by external calibration method.

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