Metrology
Laboratory Programs
Bureau of Weights and Measures
Metrology is the science of measurement, dealing with measurement units
and standards. Don't confuse it with "meteorology" or atmospheric
science. Metrology forms the basis of all weights and measures work.
Without uniform measurement units and accurate standards our commercial
marketplace would not function efficiently.
The Bureau Laboratory maintains the State Standards of mass, volume,
length, and temperature. All are maintained accurate and traceable to the National
Standards maintained by the National Institute of Standards and Technology
(NIST). For information on
New York
's
lab status under the NIST State Standards Program, check the NIST
Weights and Measures Division.
The laboratory has a defined quality system that is designed to assure
the quality of all measurement services. The laboratory is accredited by
the National Voluntary Laboratory Accreditation Program (NVLAP) to ISO Guide
17025 standards for most of the calibration services offered. For more
information on our Scope of AccreditedServices, click on the NVLAP logo or the adjoining link below, or check the http://ts.nist.gov/Standards/scopes/programs.htm site (look for our name under Calibration Laboratories, mechanical).
There are many sites on the internet where you can find conversion factors to convert between metric and customary units. A good starting place is to search the keywords “metric conversions.”
Calibration Services
The Bureau Laboratory offers a wide range of calibration and testing
services. These services are available to both the public and private sectors
on a fee basis. Calibration services are offered in the areas of mass
(weight), volume, length, temperature and time in both customary and metric
units. The laboratory is capable of performing calibrations at varying
levels of accuracy.
Many standards do not need calibration at the highest levels and in
fact, may not be stable enough to maintain high accuracy. Our laboratory
staff will gladly answer your questions regarding what kind of calibration
will best suit your needs. They can also assist in specifying standards
that you are looking to purchase. Call or write at the phone number or
address below for assistance, advice or to make an appointment.
Medium Accuracy - Calibration in the medium accuracy range
typically includes weights and measures used by regulatory officials in the
inspection of commercial devices, and by private companies that service
these devices.
Type of Standard
|
Range of Sizes
|
Typical Accuracy
|
Mass (weight)
|
2,500 - 0.000001 lb (1000 kg - 1 mg)
|
0.01%
|
Liquid Volume
|
2,000 gal - 1 fl oz (8,000 liter - 10 milliliter)
|
0.04%
|
Length
|
100 feet - 1 inch (30 meter - 1 centimeter)
|
0.1%
|
Temperature
|
32 - 110 F (0 - 50 C)
|
0.2 F
(0.1 C)
|
Time
|
N/A
|
0.1 second
|
High Accuracy - Calibration in the high accuracy range typically
includes weights and measures used by the manufacturing and pharmaceutical
industries.
Type of Standard
|
Range of Sizes
|
Typical Accuracy
|
Mass (weight)
|
2,500 - 0.000001 lb (1000 kg - 1 mg)
|
0.001%
|
Liquid Volume
|
10 gal - 1 fl oz (40 liter - 10 milliliter)
|
0.01%
|
FEES - Fees are charged to recover the costs of performing the
tests and are based on an hourly rate of $75. Estimates are available at the
phone number and email address below.
Type Evaluation Services
Each type of commercial device must be approved in
New
York
before it is sold or used in a commercial application, that is in determining the quantity for
purpose of sale or transfer, or in determining the charge for services
based on quantity. This approval is granted to the manufacturer or
distributor of the device. Commercial devices must be capable of meeting
the specifications and tolerances in NIST Handbook 44, which is adopted in
New York Regulations.
New York is a Participating Laboratory in the National Type
Evaluation Program (NTEP) and is authorized to perform evaluations in
the areas of scales and weighing devices (including indicators and cash
registers) and taximeters. NTEP operates under the National Conference on
Weights and Measures and provides one-stop shopping for manufacturer's to
get approval for the virtually the entire country. NTEP also has
cooperative agreements with Canada to share test results.
You can get a New York approval for your device in one of two ways.
1.
You may request approval and an appointment to submit
samples to the laboratory for test. If the device passes all the tests, a
certificate will be issued. Fees are charged to recover the costs of
performing the tests and are based on an hourly rate of $75. Estimates are
available at the phone number and email address below.
2.
You may also submit a Certificate of Conformance
issued by the NTEP as proof of compliance and request registration. Upon
payment of a registration fee of $100 a certificate will be issued.
At present, NTEP does not cover all device types. Those device types not
covered by NTEP must be submitted for test under option 1 above.
NYS Department of Agriculture and
Markets
Bureau of Weights and Measures
Building 7A
1220 Washington Avenue
Albany, New York 12235-0001
(518) 457-3452
weighlab@agriculture.ny.gov
Revised
05/04/10
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