Specific and rapid method for measurement of L-arginine, urea and ammonia in grape juice/must and wine

Shipping temperature: ambient

Storage temperature:
- Short term stability: 2-8^oC,
- Long term stability: see individual component labels

Assay format: spectrophotometer

Detection method: absorbance - 340

Signal response: decrease

Linear range: 1,0 to 35 mg of L-arginine, 0,2 to 7,0 μg of ammonia and 0,3 to 14 μg of urea per assay

Reaction time: ~ 20 min [ammonia (2 min) / urea (6 min) / L-arginine (7 min)]

Detection limit: 0,07 mg/L (ammonia) / 0,13 mg/L (urea) / 0,37 mg/L (L-arginine)

Stability: > 2 years under recommended storage condition

 

• Improved assay format
• Very rapid reactions due to use of uninhibited glutamate dehydrogenase
• All enzymes supplied as stabilised suspensions
• Very competitive price (cost per test)
• All reagents stable for > 2 years after preparation
• Spreadsheet available
• Standard included
• Extended cofactors stability

Grape juice, wine must, wine and other materials (e.g. biological cultures, samples, etc.)

Data calculator Data Booklet Safety data sheet

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