These pre-filled jars 4% formaldehyde make working a lot safer and more user-friendly.The very easy to operate push button makes it easy for the 4% formaldehyde to flow down into the container.
The reservoir below is coated with a standard amount of water making it easy to remove biological tissue from the tweezers.
When the 4% formaldehyde has run into the reservoir, the color will change from transparent to yellow/green, indicating that the jar is now filled with formaldehyde.
This product is equipped with a safety filter that prevents the formaldehyde from running back into the container.
