Troemner Cal-Paks Data Sheet

Cal-Paks™

Troemner UltraClass, ANSI/ASTM E617 Class 1 and
OIML R 111 Class E2 and F1

Cal-Paks™

61

www.troemner.com 800-249-5554

General Information

Electronic Certicates

Troemner Cal-Paks™ contain (3) high quality, precision
weights which can be used with all balance manufacturers’
makes and models. The weights supplied are the balance
manufacturers’ recommended calibration weight, 10% of the
calibration weight, and the minimum weight as determined
by the balance’s readability and expected standard deviation
under normal conditions as recommended by USP 41 (United
States Pharmacopeia).

Troemner Cal-Pak™ components and carrying case are linked
through the use of a unique serial number. You can trace your
individual weights to the appropriate NVLAP

+

Accredited
Certificate and master carrying case. The precision weights
in your Cal-Pak™ are traceable to internationally recognized
standards through an exacting series of precision measurements
that provide an accurate value for each weight with low
uncertainty. Troemner’s NVLAP

+

Accredited Certificate provides
evidence that the process for the measurement traceability
chain meets the stringent requirements of ISO/IEC 17025 and
has been approved by NVLAP

+

.

Calibration Consistency - Troemner addresses every variable of
our measurement process to ensure consistency of calibration
results for your processes, products and services.

Your Cal-Pak™ includes a USB Flash Drive that contains your
electronic NVLAP

+

Accredited Certificate. The USB Flash Drive
provides you with a paperless system for your certificates to be
easily accessed and maintained over time. Return your flash
drive each time you have your Cal-Pak™ recalibrated and we
will add the new NVLAP

+

Accredited Certificate to the flash
drive. This green system provides you with a history of your
weights all in one convenient place with no paper to keep on
file. All the information is maintained on the Flash Drive so you
can print the NVLAP

+

Accredited Certificate when necessary.

Suggested Applications

Cal-Paks™ are used for routine maintenance of your balance.
Troemner provides you with (3) weights that will allow you to
cover the entire usable range of your balance. The maximum
weight is used to calibrate the balance externally, the mid
weight is 10% of the calibration weight to test the sensitivity
of the balance, and the minimum weight is the lowest possible
weight that can be weighed on your balance. The minimum
weight was selected based on USP 41 test for minimum weight
and the expected standard deviation of your balance at the
minimum weight. The three weights will test the accuracy and
linearity of your balance throughout its entire range.

Alloy 8 Advantage - Troemner Alloy 8 Stainless Steel is the
finest grade of stainless steel available. Alloy 8 possesses
closely controlled density (8.03 g/cm

3

), extremely low magnetic
properties, good stability, and resistance to corrosion. Alloy 8 is
available exclusively through Troemner.

Lowest Uncertainties - Troemner is committed to achieving
the highest measurement capabilities and offering the lowest
measurement uncertainties possible. The true test of how well
we perform a calibration is in the reported uncertainty, which
provides you a higher level of confidence.

Cal-Paks™

Tolerance Classes

Refer to Troemner’s Tolerance Chart on pages 19-21 for
specific information on the tolerance of each weight in a
given class. Troemner’s Tolerance Chart is also available on

www.troemner.com for additional reference.

+

NVLAP Laboratory Code 105013-0

62

Construction and General Shape

Troemner Cal-Paks™ are available in either Analytical Precision
Weight or OIML Precision Weight styles. Each style differs in
construction and shape as described below.

Milligram Weights - Both Analytical Precision Weights and
OIML Precision Weights 500 mg and below are made of
stainless steel or aluminum and are one-piece construction
with one side turned up to make them easier to handle with
forceps. Analytical Precision milligram weights are rectangular
and all classes are marked with their nominal value. Each
OIML Precision milligram weight’s nominal value is determined
by the shape of the weight according to the table below.

ANSI/ASTM E617 Milligram Weights

OIML R 111 Milligram Weights

Gram Weights - Analytical Precision Weights and
OIML Precision Weights 1 g and larger consist of a body with
a lifting knob. The lifting knob is specifically designed for use
with forceps or some other lifting device. Weight bottoms are
slightly recessed to expose the smallest possible area to wear.
Each weight (except OIML R111 Class E2) is marked with its
nominal value.

OIML R 111 class E2 weights 1 g and larger are of one-piece
construction using Troemner Alloy 8 Stainless Steel which has
a consistent density. One-piece construction indicates that the
weight is manufactured from a single uniform piece of stainless
steel or aluminum, the weight has no method of adjustment
other than removing material by polishing.

All other weights 1 g and larger are produced from two pieces
of material. The body of the weight is one piece and the knob
is the second piece. The knob has a thread that screws into the
body and is tightened. There is a cavity below the knob thread
in the body which contains adjusting material, typically the
same material from which the weight is made.

Cal-Paks™

63

Shape Denomination

Pentagon 500 mg, 50 mg, 5 mg

Square 200 mg, 20 mg, 2 mg

Triangle 100 mg, 10 mg, 1 mg

ANSI/ASTM E617 Gram Weight OIML R 111 Gram Weight

www.troemner.com 800-249-5554