State Metrology Laboratory
NIST-certified Echelon III calibration lab
The Ashland metrology lab calibrates the reference weights, volumetric provers, and linear test measures used by every Massachusetts sealer, plus private-sector labs and industry.
Echelon III
NIST certification
Ashland, Massachusetts
Lab location
10 days
Typical turnaround
Measurement capabilities
Mass
30 kg to 1 mg
Mass
1000 lb. to 0.0001 lb.
Mass
8 oz to 0.03125 oz
Mass
12 oz ap to 0.5 gr
Mass
50 oz t to 0.005 oz t
Volume Transfer II
100-gal, 5-gal
Field Calibrations — Volume Transfer II
100-gal
Municipal sealer inventory (2023)
Sealer-owned and Division-issued devices currently in service across Massachusetts municipalities (selected highlights).
31-lb sealer weight kits
3,919
Aluminum seals
9,638
Plastic/lead wire seals
115,921
Annual red & green seals
277,907
Fuel test measures
440
Reweighing books
137