The shaft of the is slightly smaller than the . This means that the stopper will not hold the Go Direct Ethanol Vapor in place.......
A replacement stopper for an older style CO2 sensor is available: . This stopper is a standard 1-hole, #6 stopper that has been over-bored and......
The stoppers sold by Vernier are made of a material that is slightly softer than the traditional black rubber stoppers. They work best if they......