Application notes
Vaisala technologies applied
Application notes
Urea-Ammoniumnitrate (UAN) Production Process
The refractive index (RI) value is used to monitor the addition of urea and ammonium nitrate. RI is an essential quality parameter for the...
Control of Polymerization
In-line process and product quality control in polymerization process, with Vaisala Process Refractometer providing accurate refractive index...
Citric acid production
Learn how Vaisala Process Refractometer measures concentration reliably throughout the citric acid production process accurately and in-line.
Dutch process cocoa powder production
In-line alkali solution concentration measurement with Process Refractometer in dutching or alkalizing of cocoa beans, nibs, cocoa liquor or...
Solar (photovoltaic) industry: Removal of residual sawing material from solar wafers
A solar cell, or photovoltaic (PV) cell, converts sunlight into electricity. The industry is growing as it uses a CO2-free renewable energy...
Autoxidation process: hydrogen peroxide
Vaisala Process Refractometer measurement serves at several points in a H2O2 plant: Ensuring peroxide extraction efficiency and H2O2...
Vaccines production
With Pharma Refractometer: isolate reliably the virus fraction in the purification step, ensure a safe and high-quality vaccine product...
Nitroglycerine Production Process
Vaisala process refractometer is used to ensure a safe operation by continuously monitoring the nitroglycerine and nitroglycol concentration in...
Kraft (Sulfate) Pulp: Continuous Digester
Learn about Total Dissolved Solids (TDS) measurement of pulp suspensions in digester washing zone and blow line with Vaisala SAFE-DRIVE...
Post-etch residue removal with EKCĀ® chemicals
Semicon Refractometer offers 2 different control strategies either to automate chemical refilling or automate spiking after each wafer run.
Donuts sugar coating
In-line Brix measurement of sugar mass concentration with Vaisala Sanitary Refractometer for bakery coating of frosted baked goods such as...
Kraft (Sulfate) Pulp: Recovery Boiler
Learn how Vaisala Digital Divert Control System DD-23 ensures that weak (concentration below 58%) black liquor is not fed into the boiler.
In-line Brix, end-point and quality control in rum distillation process
Vaisala Sanitary Refractometer provides accurate, real-time in-line control over all stages of rum distillation process, to optimize energy...
KOH etch of silicon
Various etching processes can be optimized and etch endpoints determined when the etchant concentration is known, monitored by Semicon...
Ammonium Nitrate Production Process
Process and product quality control in ammonium nitrate production process with process refractometer installed on the concentrator and slurry...
Pharmaceutical fermentation
The application note is about fermentation applications and explains in detail the benefits of using refractive index in pharmaceutical...
Kraft (Sulfate) Pulp Process
Measuring black liquor dry solids and green liquor density or TTA and fiber suspension total dissolved solids content with process refractometer...
Peroxide blending dispense at CMP
Chemical mechanical polishing (or planarization) CMP slurries are mixed or diluted at plant before usage. The correct blend is linked to wafer...
Rice pudding production
For high quality rice pudding with excellent taste, homogeneity and consistency of pudding slurry are required, using continuous in-line quality...
Production of Isocyanates for Polyurethane Production
Vaisala process refractometer provides accurate and reliable refractive index measurement for in the production of isocyanates and polyurethanes...