Sterilization with Formaldehyde
LTSF (Low temparature steam and formaldehyde = Low Temperature Steam and Formaldehyde), ► Pure formaldehyde is a colorless, flammable, toxic and highly soluble gas that boils at 19 o C. For formaldehyde sterilization, the temperature should be 50-80 ° and humidity should be 60-80%. ► As with EtO, people using formaldehyde sterilizers should also have regular health checks. ► The exposure limit is 0.75 ppm in the 8 hours working period in the workplaces. According to the OSHA standard, the short-term (less than 15 minutes) exposure limit is 2 ppm.
✓ Preferred for temperature sensitive materials
✓ No need for ventilation
✓ Liquids cannot be sterilized.
✓ There is 1.5 CM length, 2 mm inner diameter limitation.
✓ Formaldehyde harms the environment because of throwning into the drainage system through the water channel. (Also is said that it does not harm because it dissolves in water)