This brass reusable calibration vessel can be used with ANY ¼ ft.³ concrete air entrainment pressure meter.This precisely machined calibration vessel of 354mL is exactly 5% air by volume when placed in any ¼ ft.³ pressure meter bucket (base). You can make quick and easy checks by placing this vessel in your pressure meter bucket.

Use two Pro Cali-Cans™ if you would like to check at 10%.

Conforms to ASTM C231 (Section 4.4 Note 1)

Shipping Info: 11” x 11” x 11” – 5 lbs.