Cleaning options for different samples
For the measuring cell, cleaning immediately after the measurement is particularly important. Depending on the sample being measured, a suitable solvent for cleaning must be selected. It may even make sense to perform the cleaning with two different solvents in order to save time during the subsequent drying. This can be especially important when operating an autosampler.
The U-tube oscillator is cleaned by rinsing it with the appropriate medium supplied with a syringe or peristaltic pump. Just one keystroke is needed to have the drying unit eliminate all liquid residues. In addition, cleaning procedures can be configured with semi or fully automatic drying.
Whether the U-tube oscillator is clean and dry can be determined with a test measurement. Dry air at 20°C and normal air pressure should give a reading of about 0.0012 g/cm³. The drying time can be significantly shortened with a volatile solvent. In this overview, we have summarized sample-specific cleaning suggestions.
Recommended Cleaning Agents
|Sample||Cleaning solution 1||Cleaning solution 2|
|Aromas, fragrances, perfume||Ethanol, Isopropanol||-|
|Beer||Water, enzymatic active cleaner (3 % Mucasol ®)||Ethanol|
|Original wort||Water, enzymatic active cleaner (3 % Mucasol ®)||Ethanol|
|Brake fluid (Ethylene glycol)||Xylol||-|
|Wood preservative based on turpentine||Cleaning benzene||Ethanol|
|Water-based wood preservative||Water||Ethanol|
|Motor oil||Cleaning benzene||Acetone|
|Salad dressings||Cleaning benzene||Ethanol|
|Lubricating oil||Cleaning benzene||Acetone|
|Diesel, kerosene, jet fuel, fuel oil||Cleaning benzene , petroleum ether||Aceton|
|Wax, paraffin||Toluene||Xylol, cleaning benzene|