Weight & Mass Calibration

Weight & Mass Calibration

Experienced and efficient technicians

We calibrate most class types of calibration weight.

Minimise measurement uncertainty, Accredited and specialist calibration service.

Trust the specialists to calibrate your instrument quickly.

You’ll get timely, accurate services and an easy-to-read Calibration Certificate with a full report of all work and results. When your instrument is due for re-calibration, we will send you a reminder notice.

Why choose us?

Our highly educated personnel can check that test instruments are operating properly and meet all manufacturer specifications. We may tailor our calibration techniques to your specific requirements and do on-site calibrations at your location. Alternatively, our professionals can execute your calibration in our ISO 17025 calibration lab on-site.

Occasionally, our experienced staff will discover a defect with the test instrument during calibration. If this happens, we can also repair your test equipment with your permission and calibrate your device to ensure that it is safe to use and provides accurate data for another year.

About Weight & Mass Calibration

MASS CALIBRATION

METROLOGY CAPABILITIES

Weight Calibration

Below 1 kg. (2 lb.) to 50 kg. (100 lbs.)

Classes: A, B, C, F, M, P, Q, S, S-1, T, 1, 1.1, 2, 3, 4, 5 and 6

Balance Calibration / Scale Calibration

0 to over 1,000 lbs.

Comparator Calibration

0 to over 1,000 lbs.

THE MASS CALIBRATION PROCESS

Our lab is outfitted with a variety of scales designed to handle mass calibration of standards and instruments at varied weights and accuracies. Calibration requires comparing the weight reading from the scale to a known standard or mass value. The precision mass standards used for calibration are of proven accuracy.

During mass calibration, the test weights produced from calibrated items are compared to defined measurement standards. The procedure will determine whether or not measurement precision is maintained. Instruments can be adjusted to bring measurements within tolerances, or weights can be replaced as needed.

Mass calibration is performed in a lab with constant temperature and humidity control to ensure that weights and instruments are stabilized before and during measurement. The climate-controlled room is maintained at 68°F ± 1°F with 30-50% relative humidity. Under these conditions, our technicians can calibrate to 0.00001 of a gram.

Weight calibration services are available for a wide-range of classes, including A, B, C, F, M, P, Q, S, S-1, T, 1, 1.1, 2, 3, 4, 5 and 6, as defined in the specification NIST/NBS Handbook 105-1 & 44, NBS Circular 547 and ANSI/ASTM E617. Highly reliable equipment is capable of performing balance calibration, scale calibration and comparator calibration on instruments with capacities to over 1,000 lbs.

Our in-house lab and field technicians are highly trained to execute quick calibrations without sacrificing the accuracy of the results. They adhere to our strict internal protocols as well as the customer needs provided with each purchase.

What is the difference between Weight & Mass?

Weight is often taken to mean the same as mass, however, there is a difference, which for calibration purposes is important to note:

Mass is the measurement of the amount of material that makes up the object.

Weight is the gravitational force acting on the object.

 Why Calibrate? 

Accuracy is key as weights are used to calibrate scales and other weighing equipment, an inaccurate weight, in turn, will have a knock-on effect and will produce inaccurate scale calibration. A calibrated set of weights allow the scale error of the balance to be assessed and corrected to the highest accuracy.

Calibration weights are available in a wide range of classes and specifically used for certain types of balances such as:

M1 calibration weights are used for testing and calibrating standard scales

F1 calibration weights are used for testing and calibrating precision electronic balances

E2 calibration weights are used for testing and calibrating analytical balances

How is it Calibrated?

Weights must be calibrated with extreme care and precision; weights must not be:

touched with one's bare hands

When using sharp or abrasive tools

Make contact with contaminated or dirty surfaces

Surfaces are slid or rolled across.

knocked each other over or into each other

Used non-recommended solvents or materials to clean

All of these factors can compromise the weight's integrity and result in inaccurate readings; therefore, proper care and tools must be used during the calibration process. We take care with your weights to ensure accuracy at all times during calibration. There are several methods of weighing techniques in mass metrology, and which method is used depends on the desired accuracy. Methods include:

Direct reading measurements,

Weighing by differences,

Substitution weighing,

ABA calibration,

ABBA calibration,

Cyclic weighing,

Weighing by sub-division,

Weight Calibration Standards according to

Class E1 ±0.5 mg               Used for traceability between national mass standards and OIML class E2 weights and lower

Class E2 ±1.6 mg               Used for traceability of OIML class F1 weights and lower and OIML accuracy class I weighing instruments

Class F1 ±5 mg    Used for traceability of OIML class F2 weights and lower and with OIML accuracy class I weighing instruments

Class F2 ±16 mg  Used for traceability of OIML class M1 weights and lower and with OIML accuracy class II weighing instruments

Class M1              ±50 mg  Used for traceability of OIML class M2 weights and lower and with OIML accuracy class II weighing instruments

Class M2              ±160 mg              Used for traceability of OIML class M3 weights and with OIML accuracy class III weighing instruments

Class M3              ±500 mg              Used with OIML accuracy class III or IIII weighing instruments

How Often Should You Calibrate?

·        Calibration frequency is determined by weight use and accuracy class, however annual calibration is normally recommended.

·        Types of Weight & Mass Equipment

·        We offer calibration on the following weights and mass equipment:

·        Weight Set,

·        Weights Set,

·        Mass Set,

·        Test Weight,

·        Test Weights,

·        OIML Weight,

·        OIML Weights,

·        Known Weights,

·        Alpha Biomedical And Diagnostic ,

·        Eisco,

·        GSC International ,

·        METTLER TOLEDO ,

·        Nova Biomedical Corporation,

·        Ohaus Corporation ,

·        Reprocell,

·        Rice Lake Weighing System ,

·        Sartorius,

·        Troemner ,

·        United Scientific Supplies, Inc ,

·        1 g and above: Two-piece, 500 mg and below: One-piece ,

·        ASTM Weight ,

·        Adjustable Cavity Sheet Weight ,

·        Adjustable Cavity Weight,

·        Adjustable Cavity Weight with Knob ,

·        Analytical Sheet Weight ,

·        Analytical Weight ,

·        Analytical Weight Set Case ,

·        Balance Weight ,

·        Below Balance Hook ,

·        Calibration Mass ,

·        Calibration Weight ,

·        Customized 3rd Weight ,

·        DMC Scanner ,

·        Economy Hooked Weight Set ,

·        Electronic Balance Calibration Weight ,

·        Electronic Balance Calibration Weight with Grip Handle ,

·        Hook Weight ,

·        Hook Weight Set ,

·        Individual Analytical Weight Case ,

·        Individual Electronic Balance Weight Case ,

·        Individual Metric Economical Sheet Weight with One Side Turned Up ,

·        Individual Metric Economical Weight ,

·        Individual Metric Economical Weight with Adjusting Cavity ,

·        Individual OIML Weight Case ,

·        Large Metric Analytical Weight Set ,

·        Large Weight Set ,

·        Medium Metric Analytical Weight Set ,

·        Medium Weight Set ,

·        Metric Analytical Sheet Weight with One Side Turned Up ,

·        Metric Analytical Weight ,

·        Metric Analytical Weight with Handling Knob ,

·        Metric Attachment Weight Set ,

·        Metric Economical Weight Set ,

·        One Piece Metric Analytical Sheet Weight ,

·        One Piece Metric Analytical Sheet Weight with One Side Turned Up

·        One-Piece

·        Replacement Case for 10 g to 500 g Individual Weights

·        Slotted Weight

·        Slotted Weight Set with No Certificate

·        Small Avoirdupois Test Weight Set

·        Small Metric Analytical Weight Set

·        Small Metric Test Weight Set

·        Small Weight Set

·        Stacking Tray

·        Standard Line Weight

·        Standard Line Weight Set

·        Test Weight

·        Two-Piece

·        Two-Piece Analytical Weight

·        Two-Piece Analytical Weight With Knob

·        Two-Piece Electronic Balance Calibration Weight

·        Two-Piece Metric Analytical Weight

·        Weight

·        Weight Hanger

·        Weight Set

·        Weight Set with No Certificate

·        Weight with Knob, One Piece (Monobloc)

·        Wire Weight