Weight Calibration

Dispersion Laboratory's mass metrology laboratory is the best option for the calibration of your weights for the calibration of your 1mg to 30kg weights according to the ASTM (ASTM 1 to 7) and OIML classes (E2, F1, F2, M1 to M3). We are also able to calibrate your own avoirdupois weights (lb and oz).

Our laboratory was built to conform to the most rigorous standards of stability. With humidity levels higher than 42% and a temperature maintained at 20 degrees Celcius with a maximum fluctuation of 0.5 degrees per hour, we offer calibration conditions which exceed required standards as well as an unrivalled selection of weights. We have 9 Mettler Toledo balances/mass comparators which we use for calibrating your weights. They permit us to achieve very low uncertainty levels (see the table below).

Nominal mass	Uncertainty	Mass comparators
1mg-200mg	0,002mg	UMX-5
300mg	0,003mg	UMX-5
500mg	0,004mg	UMX-5
1g et 2g	0,007mg	UMX-5
3g	0,008mg	UMX-5
5g	0,010mg	UMX-5
10g	0,017mg	AX106
20g	0,033mg	AX106
30g	0,050mg	AX106
50g	0,040mg	AX106
100g	0,080mg	AX106
200g	0,10mg	AT201
300g	0,15mg	AX1005
500g	0,24mg	AX1005
1kg	0,5mg	AX1005
2kg	2mg	XP2004S
3kg	2,4mg	PR5003
5kg	2,5mg	PR5003
10kg	10mg	XP32003L
20kg	20mg	XP32003L
25kg	30mg	XP32003L

Our mass comparators, especially our robotized station, offer capacities for calibration unmatched in Canada. This means that your weights will be returned to you much more rapidly for use.

The weight calibration service includes :

• "As Found" and "As Left" data (this last, if an adjustment was required)
• Cleaning of your weight
• Adjustment of your weight according to the class requested (for two-part weights)
• A detailed certificate and complete online access (sigma.dispersion.ca) to your certificate.

Each calibration performed on our instruments uses traceable SI references (International System of Units).

We offer a complete service from pick-up until the return of your weights. All shipping costs are on us.