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Accredited
calibration services:
From -196oC
to 1000oC ASTM thermometers, digital thermometers, PRTs,
thermocouples, thermistors
Specific Gravity
hydrometers. API hydrometers, Baume hydrometers,
Kg/m3 (density) hydrometers, Brix hydrometers, Proof hydrometers
ASTM Class 1 and
OIML E-2 and lesser specification stainless steel and brass laboratory weights.
New calibrated weights and re-calibration of weights you currently have.
Thermo-hygrometers,
chart recorders, humidity sensors, data-loggers
Burets, pipets,
volumetric flasks, graduated cylinders, volumetric glassware
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 NIST
Traceable
ISO/IEC
17025 Accredited
GLASSWARE
(Volumetric Glassware)
CALIBRATION SERVICES
CALIBRATION:
The set of
operations which establish, under specified conditions, the relationship between
values indicated by a measuring instrument ...., and the corresponding known
values of a measurand.
from ISO Guide
25, ‘definitions’
Many
quality systems now require that volumetric glassware be calibrated
or certified (the terms are often used interchangeably)
where precise measurements are of critical importance. Accordingly, ICL
maintains a modern, well equipped,
ACCREDITED volumetric laboratory.
Our
calibration capabilities cover graduated volumetric glassware with capacities
from 0.1 ml to 3,000 ml.
CALIBRATION
of volumetric glassware
consists of
the following services:
§
The instrument
is inspected visually for defects in numbering, graduating, or any obvious
physical defects.
§
The instrument
is examined under a polariscope to be certain it is free from strains in the
glass (usually from the manufacturing process), as severe strains may affect the
integrity of the instrument in the long term.
§
In a pipette or
other artifact with a precision bore, the bore will be examined under
magnification for irregularity in shape or any other defect which would render
the instrument unsuitable for certification.
§
If the
instrument does not have a serial number, a ceramic decal serial number will be
affixed.
§
The instrument
is next carefully cleaned, using solvents or detergents as appropriate, and
rinsed with alcohol, then with water, and finally with distilled water, and
thoroughly dried by positive ventilation using filtered air.
§
The instrument
is then tested per ICL procedure 03, based on ASTM E-542, as appropriate for the
volumes to be contained or delivered. Calibration is performed by hydrostatic
weighing using distilled water, corrected for temperature, atmospheric pressure
and air bouyancy. Readings at each test point (as appropriate) are resolved
under magnification to one-tenth of the smallest scale division
and are carefully noted.
§
A Report of
Test (sometimes called a Certificate of Calibration) is prepared detailing all
pertinant information concerning the test, the observed readings of the
instrument, (with corresponding corrections), and all the required information
to convey NIST traceability. (See photo at right, above) All
certificates are laminated in heavy plastic for protection in the laboratory
environment
§
A durable
calibration tag is affixed to the artifact indicating the date of most recent
calibration and the ‘next due’ date.
§
We will notify
you when your instrument is due for recalibration. (One less thing for you to
remember)
Recalibration
form and address label to send in your instrument for calibration
Sample
calibration report for volumetric flask
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