Description
Primer 94
3M Tape Primer 94 can be used to promote the adhesion of 3M tapes to 
surfaces such as polyethylene, polypropylene, ABS, PET/PBT blends, 
concrete, wood, glass, metal, and painted metal surfaces.Â
3M Tape Primer 94 can be used to promote the adhesion of 3M tapes to 
surfaces such as polyethylene, polypropylene, ABS, PET/PBT blends, 
concrete, wood, glass, metal, and painted metal surfaces.Â
Surface 
Preparation
The bonding surface must be relatively clean and 
dry. Contaminated surfaces should be cleaned with a 50/50 
Isopropyl Alcohol and water mixture. A clean, lint-free cloth 
should be used.
The bonding surface must be relatively clean and 
dry. Contaminated surfaces should be cleaned with a 50/50 
Isopropyl Alcohol and water mixture. A clean, lint-free cloth 
should be used.
 Application
Shake 3M primer 94 well before 
using. Apply a thin, uniform coating to the bonding surface using 
the minimum amount to coat the surface fully. Allow 3M 
primer 94 to dry thoroughly before applying the tape. This is usually 
accomplished in 5 minutes at room temperature. Be sure the primed 
surface remains free from contaminants before applying the 
tape. Porous surfaces may require two applications of 3M tape primer 94 
for uniform coverage and good adhesion. Allow the first application 
of primer to dry before applying the second coat. 3M primer 94 
may be applied with a brush or swab.
FIRST AID INFORMATIONEye Contact:Â Flush eyes with large amounts of water. If symptoms persist, get medical attention.
Skin contact: Immediately flush the skin with a large amount of water.
Inhalation:Â Remove the person to fresh air. If symptoms develop, get medical attention.
If Swallowed: Do not induce vomiting; get the person two glasses of water and Get immediate medical attention.
Clean up
3M primer 94 can be removed with 
isopropyl alcohol. Vigorous scrubbing may be required.
Purpose in Mycology
We use this in Mycology to prime the plastic lids after making holes and then stick the injection port and air filter to make sure there is no leakage. If you use metal lids for mycology, priming is not essential.
This primer, when applied to lids, can be autoclaved.
This primer, when applied to lids, can be autoclaved.
Check out our listings to Make Lids for Liquid Culture to find more tools to get started with your projects
