Mushroom Plunger attachment provides a larger surface area than the standard plunger to spread the impact area and lower the measuring range down to 5mPa. Designed for use exclusively with the HM-89L Silver Schmidt Test Hammer, the Mushroom Plunger is ideal for testing thin or low-strength concrete.

Features:

Non-destructive testing on concrete with compressive strengths as low as 725psi (5mPa)
Effective on concrete with compressive strengths from 725 to 4,351psi (5 to 30mPa)

Included Items:

Mushroom Plunger

Specifications

Attribute name	Attribute value
Estimated Shipping Weight	1.0lb (0.45kg)

Product Q&A

Q: How are longer specimens extracted and the piston returned?

Specimens longer than 5in are extracted by repositioning the Adapter Ring after maximum piston travel, and the spring-loaded piston automatically returns to the start position when the release valve is opened.