Sample splashing is one of the most annoying issues in halogen moisture testing. When samples boil or pop during rapid heating, particles jump out of the weighing pan. Material loss creates unreliable moisture percentage, wastes samples and contaminates the heating chamber.
Liquid or high-moisture samples boil rapidly under fast halogen heating
Sample layer is too thick, moisture trapped inside and suddenly vaporizes
Heating temperature set too high from the start
Uneven sample placement on the aluminum pan
Reduce initial heating rate or use ramp temperature mode Instead of jumping directly to maximum temperature, use gradual temperature rise for high-moisture samples. Slow evaporation prevents sudden boiling.
Spread sample into a thin uniform layer Thin layer lets moisture escape gently. Avoid thick mounds. For sticky and liquid samples, use inert dispersion medium to spread samples evenly.
Lower drying temperature for volatile or high moisture samples Adjust temperature down to slow vaporization. Run comparison tests against reference oven method to validate final results.
Keep chamber and pan clean Residue from old samples creates hot spots, which trigger localized boiling and splashing. Clean pans and heating shield after each measurement.
Reduce sample loading mass Overloading increases splashing risk. Follow instrument recommended sample weight range.
Sample splashing is easy to avoid with proper sample preparation and temperature programming. Hochoice halogen moisture analyzers support adjustable heating profiles, helping operators control heating speed and reduce splashing risk during moisture testing. Our products hold international quality certifications for industrial and laboratory QC use.
